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Author SHA1 Message Date
Chris Lattner
6dc868581b teach codegen to turn trunc(zextload) into load when possible. 
This doesn't occur much at all, it only seems to formed in the case
when the trunc optimization kicks in due to phase ordering.  In that
case it is saves a few bytes on x86-32.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101350 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-15 05:40:59 +00:00
Chris Lattner
efcddc3325 add a simple dag combine to replace trivial shl+lshr with 
and.  This happens with the store->load narrowing stuff.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101348 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-15 05:28:43 +00:00
Chris Lattner
2392ae7d73 Implement rdar://7860110 (also in target/readme.txt) narrowing 
a load/or/and/store sequence into a narrower store when it is
safe.  Daniel tells me that clang will start producing this sort
of thing with bitfields, and this does  trigger a few dozen times
on 176.gcc produced by llvm-gcc even now.

This compiles code like CodeGen/X86/2009-05-28-DAGCombineCrash.ll 
into:

        movl    %eax, 36(%rdi)

instead of:

        movl    $4294967295, %eax       ## imm = 0xFFFFFFFF
        andq    32(%rdi), %rax
        shlq    $32, %rcx
        addq    %rax, %rcx
        movq    %rcx, 32(%rdi)

and each of the testcases into a single store.  Each of them used
to compile into craziness like this:

_test4:
	movl	$65535, %eax            ## imm = 0xFFFF
	andl	(%rdi), %eax
	shll	$16, %esi
	addl	%eax, %esi
	movl	%esi, (%rdi)
	ret




git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101343 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-15 04:48:01 +00:00
Dan Gohman
ae541aad5c Add more const qualifiers for LLVM IR pointers in CodeGen. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101342 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-15 04:33:49 +00:00
Dan Gohman
46510a73e9 Add const qualifiers to CodeGen's use of LLVM IR constructs. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101334 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-15 01:51:59 +00:00
Evan Cheng
adf979900c More 80 violations. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101330 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-15 01:25:27 +00:00
Evan Cheng
22d286b218 80 col violations. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101325 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-15 01:01:55 +00:00
Devang Patel
f8a2e01fc7 Add comment. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101317 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-15 00:02:49 +00:00
Devang Patel
d33402629e There is no need to track compile unit offsets if there is only one compile unit. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101315 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-14 23:56:24 +00:00
Devang Patel
7a996b2b05 Remove dead code. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101314 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-14 23:54:13 +00:00
Dan Gohman
6465265ae1 Delete unneeeded arguments. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101276 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-14 20:17:22 +00:00
Dan Gohman
6a732b5a66 Delete unused arguments. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101275 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-14 20:05:00 +00:00
Dan Gohman
2520864773 Factor out EH landing pad code into a separate function, and constify 
a bunch of stuff to support it.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101273 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-14 19:53:31 +00:00
Dan Gohman
7f6b8b8891 Reset the debug location even if the instruction was a terminator. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101272 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-14 19:30:02 +00:00
Dan Gohman
11609451a5 Refine #includes. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101269 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-14 18:49:17 +00:00
Dan Gohman
fe85e76473 Pull utility routines with no SelectionDAG dependence out of 
SelectionDAGBuilder. FunctionLoweringInfo isn't an ideal place for
them to live, but it's better than SelectionDAGBuilder for now.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101267 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-14 18:31:02 +00:00
Dan Gohman
b02b62a271 Fix typos in comments. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101266 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-14 18:24:06 +00:00
Dan Gohman
988099700a Delete an obsolete comment. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101264 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-14 17:40:25 +00:00
Dan Gohman
c21a2dc8df Delete an unused function. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101263 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-14 17:22:02 +00:00
Dan Gohman
5dc44335b1 Clear the FunctionLoweringInfo object before doing other things that 
don't need it.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101262 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-14 17:13:16 +00:00
Dan Gohman
0e026729ae Move this assert out of SelectionDAGISel into FunctionLoweringInfo, and 
drop the redundant #ifndef NDEBUG.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101261 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-14 17:11:23 +00:00
Dan Gohman
046fe6b6ba Add a comment. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101260 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-14 17:09:37 +00:00
Dan Gohman
b13033f61c Move the code for initialing the entry block livein set out of 
SelectionDAGISel.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101258 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-14 17:05:00 +00:00
Dan Gohman
c0fb65da04 Reorgnaize this code to be more tidy and readable. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101256 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-14 17:02:07 +00:00
Dan Gohman
441516fb3d Trim #includes. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101255 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-14 16:54:39 +00:00
Dan Gohman
98708260f5 Move the code for emitting livein copies out of SelectionDAGISel. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101254 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-14 16:51:49 +00:00
Dan Gohman
de4c0a7da7 Sink landing-pad marking code out of 
SelectionDAGISel::runOnMachineFunction into FunctionLowering.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101252 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-14 16:32:56 +00:00
Dan Gohman
d0d8275cb2 It's not necessary to recompute EB here. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101251 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-14 16:30:40 +00:00
Dan Gohman
32acbc1e50 Generalize this code to handle Instructions in addition to ConstantExprs. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101210 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-14 02:33:23 +00:00
Dan Gohman
b4be71e112 Reorder the methods of this class to be a little more organized. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101206 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-14 02:09:45 +00:00
Devang Patel
1d526c38e2 Clear MachineInstr->MCSymbol maps at the end of a function. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101202 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-14 01:18:28 +00:00
Evan Cheng
6327537a37 Fast path implicit_def check. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101183 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-13 22:13:34 +00:00
Devang Patel
50d80e394d Do not include types without any definition in pubtypes list. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101171 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-13 20:35:04 +00:00
Evan Cheng
c15d9135a8 Avoid variable shadowing. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101170 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-13 20:25:29 +00:00
Evan Cheng
aeb2f4aa46 Expand postra machine licm's capability a little more. If an instruction's register operands are all loop invariants, then it's safe to hoist it. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101167 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-13 20:21:05 +00:00
Jakob Stoklund Olesen
8d17160e2c Teach MachineSinking to handle easy critical edges. 
Sometimes it is desirable to sink instructions along a critical edge:

x = ...
if (a && b) ...
else use(x);

The 'a && b' condition creates a critical edge to the else block, but we still
want to sink the computation of x into the block. The else block is dominated by
the parent block, so we are not pushing instructions into new code paths.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101165 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-13 19:06:14 +00:00
Evan Cheng
5dc57ce533 Teach postra machine licm to hoist more obvious invariants, e.g. instructions with no source operands. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101154 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-13 18:16:00 +00:00
Dan Gohman
4183e31978 Add a few comments. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101148 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-13 17:07:06 +00:00
Dan Gohman
81bf03eb5c Eliminate MachineBasicBlock::const_livein_iterator and make 
MachineBasicBlock::livein_iterator a const_iterator, because
clients shouldn't ever be using the iterator interface to
mutate the livein set.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101147 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-13 16:57:55 +00:00
Dan Gohman
9e9aa44d1a Rename MachineFrameInfo variables to MFI, for consistency with 
the rest of CodeGen.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101146 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-13 16:56:45 +00:00
Dan Gohman
13e73f483e Move MachineRegisterInfo's isLiveIn and isLiveOut out of line. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101145 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-13 16:55:37 +00:00
Dan Gohman
5c982949bf Delete an unused member variable. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101143 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-13 16:51:39 +00:00
Chris Lattner
43ac721e3b add llvm codegen support for -ffunction-sections and -fdata-sections, 
patch by Sylvere Teissier!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101106 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-13 00:36:43 +00:00
Dan Gohman
8b3d6682a4 Remove a #include. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101043 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-12 16:26:03 +00:00
Benjamin Kramer
678d9b7ed0 Plug trivial leak. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101034 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-12 11:38:35 +00:00
Evan Cheng
09010a30fd Enable post regalloc machine licm by default. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101023 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-12 06:25:28 +00:00
Dan Gohman
58c2587ed8 Remove unnecessary parens. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101010 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-12 02:24:01 +00:00
Bob Wilson
347fa3fa26 Tidy whitespace. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100904 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-09 21:38:26 +00:00
Devang Patel
5142471fcd Clear InsnsBeginScopeSet and InsnsEndScopeSet at the end of function. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100867 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-09 16:04:20 +00:00
Dan Gohman
7d597b4428 Delete this obsolete comment. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100858 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-09 14:12:01 +00:00
Chandler Carruth
7b0138ffab Add a missing dependency to this library when building with CMake. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100852 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-09 05:55:25 +00:00
Bob Wilson
1793ab9e70 Use getNumImplicitDefs() and getNumImplicitUses(). 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100850 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-09 04:46:43 +00:00
Bob Wilson
0855cadb00 Fix up some comments. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100849 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-09 04:34:03 +00:00
Dan Gohman
e056781323 Add variants of ult, ule, etc. which take a uint64_t RHS, for convenience. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100824 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-08 23:03:40 +00:00
Chris Lattner
287df1bc03 delete a forwarding function. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100815 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-08 21:34:17 +00:00
Chris Lattner
74aae4726a move elf section uniquing to MCContext. Along the way 
merge XCore's section into MCSectionELF


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100812 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-08 21:26:26 +00:00
Chris Lattner
22772214de remove the TargetLoweringObjectFileMachO::getMachoSection 
api and update clients to use MCContext instead.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100808 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-08 20:40:11 +00:00
Chris Lattner
f0559e4b24 move macho section uniquing from MCParser and TLOF to MCContext where 
the compiler and asmparser now unique to the same sections.  This fixes
rdar://7835021.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100807 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-08 20:30:37 +00:00
Evan Cheng
a57fabe815 Coalescer should not delete copy instructions whose defs are partially dead. e.g. 
%RDI<def,dead> = MOV64rr %RAX<kill>, %EDI<imp-def>


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100804 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-08 20:02:37 +00:00
Ted Kremenek
d0e88f3596 Fix -Wsign-compare warning (issued by clang++). 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100799 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-08 18:49:30 +00:00
Devang Patel
e37b0c6c25 Rename a function. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100797 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-08 18:43:56 +00:00
Chris Lattner
d0024fec25 implicit defs get added to the end of machine instrs sometimes. Scan the whole instruction for the metadata operand instead of assuming it will be at the end of the instruction. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100792 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-08 18:20:52 +00:00
Devang Patel
1c246358a0 One instruction may start (or end) multiple lexical scopes. 
There is no need to remember labels identifying regions marked by such instructions in each scope.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100781 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-08 16:50:29 +00:00
Devang Patel
6a5975f49f Remove dead code. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100771 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-08 15:48:02 +00:00
Devang Patel
6669b81203 Delete out of date comment. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100769 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-08 15:41:13 +00:00
Devang Patel
6122a4d1c0 Refactor. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100768 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-08 15:37:09 +00:00
Benjamin Kramer
1bd7335a17 Use twines to simplify calls to report_fatal_error. For code size and readability. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100756 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-08 10:44:28 +00:00
Evan Cheng
c3b0c341e7 Avoid using f64 to lower memcpy from constant string. It's cheaper to use i32 store of immediates. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100751 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-08 07:37:57 +00:00
Evan Cheng
4038f9c21b Make post regalloc machine licm functional. It now passes all of MultiSource. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100742 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-08 01:03:47 +00:00
Chris Lattner
6129c37693 convert a report_fatal_error that I was able to trigger into a nice error 
so the user at least knows what inline asm is a problem.  For example:

error: inline asm not supported yet: don't know how to handle tied indirect register inputs
pr8788-1.c:14:10: note: generated from here
    asm ("\n" : "+r" (stack->regs)
         ^

Instead of:
fatal error: error in backend: Don't know how to handle tied indirect register inputs yet!



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100731 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-08 00:09:16 +00:00
Chris Lattner
87d677c185 minor tidying. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100725 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-07 23:50:38 +00:00
Chris Lattner
35a389344d use assertions instead of unreachable for logic errors. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100724 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-07 23:47:51 +00:00
Chris Lattner
38686bdffd introduce a new recoverable error handling API to LLVMContext 
and use it in one place in inline asm handling stuff.  Before
we'd generate this for an invalid modifier letter:

$ clang asm.c -c -o t.o
fatal error: error in backend: Invalid operand found in inline asm: 'abc incl    ${0:Z}'
INLINEASM <es:abc incl    ${0:Z}>, 10, %EAX<def>, 2147483657, %EAX, 14, %EFLAGS<earlyclobber,def,dead>, <!-1>


Now we generate this:

$ clang asm.c -c -o t.o
error: invalid operand in inline asm: 'incl    ${0:Z}'
asm.c:3:12: note: generated from here
  __asm__ ("incl    %Z0" : "+r" (X));
           ^
1 error generated.

This is much better but still admittedly not great ("why" is the operand 
invalid??), codegen should try harder with its diagnostics :)



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100723 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-07 23:40:44 +00:00
Chris Lattner
75361b69f3 rename llvm::llvm_report_error -> llvm::report_fatal_error 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100709 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-07 22:58:41 +00:00
Chris Lattner
1ca6531e2e remove some unneeded errorhandling stuff. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100703 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-07 22:44:07 +00:00
Chris Lattner
00d139064e tidy up 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100700 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-07 22:29:10 +00:00
Anton Korobeynikov
4b38debf59 Remove late ARM codegen optimization pass committed by accident. 
It is not ready for public yet.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100673 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-07 18:23:27 +00:00
Anton Korobeynikov
96085a36db Initial support for different kinds of FU reservation. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100645 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-07 18:19:32 +00:00
Anton Korobeynikov
1298948c5c Factor out scoreboard into separate class. This way we might have several different score boards. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100644 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-07 18:19:24 +00:00
Anton Korobeynikov
977dfcefa1 Add hook to insert late LLVM=>LLVM passes just before isel 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100640 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-07 18:18:42 +00:00
Chris Lattner
7f893c0712 fix 80 col violation, patch by Alastair Lynn 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100639 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-07 18:13:33 +00:00
Chris Lattner
c0561f29a8 add a comment line that got dropped 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100638 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-07 18:10:38 +00:00
Chris Lattner
24ad3ed71f fix a latent bug my inline asm stuff exposed: 
MachineOperand::isIdenticalTo wasn't handling metadata operands.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100636 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-07 18:03:19 +00:00
Benjamin Kramer
96fbb3eea6 Remove unused method. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100620 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-07 11:23:46 +00:00
Torok Edwin
9c4210794e Workaround the breakage in r100616 by guarding all timers with 
TimePassesIsEnabled. This should allow make check to pass.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100618 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-07 10:44:46 +00:00
Bill Wendling
5f017e8086 Use the "NamedGroupTimer" class to categorize DWARF emission better. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100616 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-07 09:28:04 +00:00
Benjamin Kramer
a592e671ee Use raw_ostream. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100615 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-07 09:26:51 +00:00
Evan Cheng
5b463905be Add comments for missed opportunities. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100610 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-07 06:00:33 +00:00
Evan Cheng
348856e56a Fix typo. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100609 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-07 05:59:12 +00:00
Chris Lattner
cf9a415182 Have the inst emitter add the !srcloc mdnode to the machine instr. 
Have the asmprinter use the mdnode to scavenge a source location if
present.  Document this nonsense in langref.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100607 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-07 05:38:05 +00:00
Chris Lattner
fee455ea6a remove another magic number. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100606 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-07 05:27:36 +00:00
Chris Lattner
decc267151 Three changes: 
1. Introduce some enums and accessors in the InlineAsm class
   that eliminate a ton of magic numbers when handling inline
   asm SDNode.
2. Add a new MDNodeSDNode selection dag node type that holds
   a MDNode (shocking!)
3. Add a new argument to ISD::INLINEASM nodes that hold !srcloc
   metadata, propagating it to the instruction emitter, which
   drops it.

No functionality change.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100605 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-07 05:20:54 +00:00
Dale Johannesen
343b42e428 Move printing of target-indepedent DEBUG_VALUE comments 
into AsmPrinter.  Target-dependent form is still generated
by FastISel and still handled in X86 code.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100596 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-07 01:15:14 +00:00
Evan Cheng
d94671a25e Post regalloc LICM. Work in progress. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100592 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-07 00:41:17 +00:00
Devang Patel
5f0940002a Do not emit specification DIE with DW_AT_specification attribute for member functions of a funcation local class. This trips gdb's partial scan of DIEs at load time. Fixes Radar 7833483. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100586 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-06 23:53:48 +00:00
John McCall
795ee9dd1e Fix a number of clang -Wsign-compare warnings that didn't have an obvious 
solution.  The only reason these don't fire with gcc-4.2 is that gcc turns off
part of -Wsign-compare in C++ on accident.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100581 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-06 23:35:53 +00:00
Dale Johannesen
49d915bb9a Revert 100573, it's causing some testsuite problems. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100578 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-06 22:45:26 +00:00
Dale Johannesen
0a580d30e0 Move printing of DEBUG_VALUE comments to target-independent place. 
There is probably a more elegant way to do this.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100573 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-06 22:21:07 +00:00
Dale Johannesen
c4d7b14a92 Allow for the possibility that a debug-value points 
to a SDNode that didn't have code generated for it.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100566 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-06 21:59:56 +00:00
Stuart Hastings
639336e0bd Reverting 100530 & 100531 due to regressions in the GDB test suite. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100563 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-06 21:38:29 +00:00
Evan Cheng
98116f99b6 Code clean up. Move includes from VirtRegRewriter.h to VirtRegRewriter.cpp. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100532 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-06 17:19:55 +00:00
Stuart Hastings
983327b351 Revise debug info machinery to digest nested functions and classes. 
A certain GDB testsuite case (local.cc) has a function nested inside a
class nested inside another function.  GCC presents the innermost
function to llvm-convert first.  Heretofore, the debug info mistakenly
placed the inner function at module scope.  This patch walks the GCC
context links and instantiates the outer class and function so the
debug info is properly nested.  Radar 7426545.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100530 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-06 17:19:32 +00:00
Mon P Wang
01f0e8561d Remove assert to treat memmove and memset like memcpy 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100521 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-06 08:27:51 +00:00
Chris Lattner
885d94143d propagate cookie management out one layer of function calls. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100510 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-06 00:58:50 +00:00
Chris Lattner
6eb7806a5f report errors through LLVMContext's inline asm handler if available. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100509 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-06 00:55:39 +00:00
Chris Lattner
421ccd9892 Give MachineModuleInfo an actual Module*. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100508 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-06 00:51:52 +00:00
Devang Patel
f778b57fc5 Remove unnecessary include. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100505 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-06 00:38:32 +00:00
Evan Cheng
18141eed26 Fix an obvious copy-n-paste bug. It's not known to cause any miscompilation. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100494 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-05 23:33:29 +00:00
Chris Lattner
79180e2ef5 Give AsmParser an option to control whether it finalizes 
the stream.  New demo:

$ clang asm.c -S -o - -emit-llvm | llc -filetype=obj -o t.o
$ otool -tv t.o
t.o:
(__TEXT,__text) section
_foo:
0000000000000000	subq	$0x08,%rsp
0000000000000004	movl	%edi,(%rsp)
0000000000000007	movl	%edi,%eax
0000000000000009	incl	%eax
000000000000000b	movl	%eax,(%rsp)
000000000000000e	movl	%eax,0x04(%rsp)
0000000000000012	addq	$0x08,%rsp
0000000000000016	ret



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100492 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-05 23:15:42 +00:00
Chris Lattner
af632c91a0 add .o file writing for inline asm in llc. Here's a silly 
demo:

$ clang asm.c -S -o - -emit-llvm | llc -filetype=obj -o t.o
<inline asm>:1:2: error: unrecognized instruction
	abc incl    %eax
	^
LLVM ERROR: Error parsing inline asm

Only problem seems to be that the parser finalizes OutStreamer 
at the end of the first inline asm, which isn't what we want.
For example:

$ cat asm.c
int foo(int X) {
 __asm__ ("incl    %0" : "+r" (X));
 return X;
}
$ clang asm.c -S -o - -emit-llvm | llc
...
	subq	$8, %rsp
	movl	%edi, (%rsp)
	movl	%edi, %eax
	## InlineAsm Start
	incl    %eax
	## InlineAsm End
	movl	%eax, (%rsp)
	movl	%eax, 4(%rsp)
	addq	$8, %rsp
	ret
$ clang asm.c -S -o - -emit-llvm | llc -filetype=obj -o t.o
$ otool -tv t.o
t.o:
(__TEXT,__text) section
_foo:
0000000000000000	subq	$0x08,%rsp
0000000000000004	movl	%edi,(%rsp)
0000000000000007	movl	%edi,%eax
0000000000000009	incl	%eax
$ 

don't stop at inc!



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100491 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-05 23:11:24 +00:00
Bill Wendling
57fbba4dba Output floating point representations in DWARF format. This is done by outputing 
the FP encoding directly as a hex representation.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100487 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-05 22:59:21 +00:00
Chris Lattner
4c842dda39 stringref-ize the MemoryBuffer::get apis. This requires 
a co-committed clang patch.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100485 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-05 22:42:30 +00:00
Dan Gohman
7b55d3665c Add a comment. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100459 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-05 20:24:08 +00:00
Chris Lattner
5c06a20814 lowering a volatile llvm.memcpy to a libc memcpy is ok. 
PR6779


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100457 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-05 20:11:45 +00:00
Dan Gohman
c4ae94dee8 Don't do code sinking on unreachable blocks. It's unprofitable and hazardous. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100455 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-05 19:17:22 +00:00
Chris Lattner
512063dd0f remove the now-redundant MMI pointer in SelectionDAG. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100419 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-05 06:19:28 +00:00
Chris Lattner
d2c4f19a9f hopefully sate the clang self host build, which is apparently 
instantiating some folding set stuff that GCC isn't, requiring 
some types to not be incomplete.

I don't know if clang is right or wrong, but unbreaking the
bot is goodness.  Here's the broken build:
http://google1.osuosl.org:8011/builders/clang-x86_64-darwin10-selfhost/builds/1813/steps/compile.llvm.stage2/logs/stdio


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100418 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-05 06:12:01 +00:00
Chris Lattner
de6e783b24 remove some redundant MMI arguments. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100417 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-05 06:10:13 +00:00
Chris Lattner
ed3a8067a6 unthread MMI from FastISel 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100416 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-05 06:05:26 +00:00
Chris Lattner
a267b0076e remove the MMI pointer from MachineFrameInfo. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100415 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-05 05:57:52 +00:00
Chris Lattner
820e55e9ad enhance MachineFunction to have a MMI pointer. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100414 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-05 05:49:50 +00:00
Chris Lattner
2b1b3312e0 privatize more stuff, eliminate vtables. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100410 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-05 05:32:45 +00:00
Chris Lattner
105d697593 reprivatize now that DwarfWriter is gone. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100409 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-05 05:31:04 +00:00
Chris Lattner
6d7337896f prune #includes, MMI can never be null 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100408 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-05 05:28:23 +00:00
Chris Lattner
74e41f9821 prune #includes, realize the MMI can never be null. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100407 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-05 05:24:55 +00:00
Chris Lattner
493c9765e0 finally blast DwarfWriter away. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100406 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-05 05:12:59 +00:00
Chris Lattner
49cd6649e1 change AsmPrinter to use DwarfDebug/DwarfException directly 
instead of going through DwarfWriter.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100405 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-05 05:11:15 +00:00
Chris Lattner
ea761868b5 trim some spurious references to DwarfWriter. SDIsel really doesn't 
need it anymore, so don't addRequire it.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100400 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-05 04:09:20 +00:00
Chris Lattner
994cb126c9 eliminate DwarfDebug::shouldEmit, which is the same now as MMI::hasDebugInfo 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100386 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-05 03:52:55 +00:00
Chris Lattner
6342b416f3 fix a regression on 2009-08-17-DebugInfo.m 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100385 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-05 03:49:26 +00:00
Chris Lattner
ba79d72eab selection dag doesn't need DwarfWriter, remove some tendrils. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100382 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-05 02:23:33 +00:00
Chris Lattner
d850ac79b5 fastisel doesn't need DwarfWriter, remove some tendricles. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100381 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-05 02:19:28 +00:00
Chris Lattner
90429c487f just have all targets create the DwarfWriter. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100377 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-05 00:42:55 +00:00
Chris Lattner
505e86832a nuke DwarfPrinter 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100375 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-05 00:27:29 +00:00
Chris Lattner
84ac8b7f43 make DwarfException not inherit from DwarfPrinter. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100374 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-05 00:26:50 +00:00
Chris Lattner
a37d5387a5 change SizeOf to take AsmPrinter instead of TargetData, 
simplifying a bunch of code.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100373 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-05 00:18:22 +00:00
Chris Lattner
d38fee8ddc 1) make DIE take AsmPrinter instead of DwarfPrinter. 
2) change DwarfDebug to not inherit from DwarfPrinter.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100372 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-05 00:13:49 +00:00
Chris Lattner
02b86b93dc Move EmitFrameMoves into AsmPrinter. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100371 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-04 23:41:46 +00:00
Chris Lattner
786d17a0cf simplify code and reduce indentation. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100369 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-04 23:31:58 +00:00
Chris Lattner
6189ed10c1 now that the magic is dispelled, move EmitSectionOffset to AsmPrinter. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100368 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-04 23:25:33 +00:00
Chris Lattner
3d22513611 eliminate the magic AbsoluteDebugSectionOffsets MAI hook, 
which is really a property of the section being referenced.
Add a predicate to MCSection to replace it.

Yay for reduction in magic.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100367 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-04 23:22:29 +00:00
Chris Lattner
be15beb54a only emit section labels if we have debug info, fixing a few 
regtest failures.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100366 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-04 23:17:54 +00:00
Chris Lattner
4ad1efec92 I was wrong, ocaml isn't referencing 'Ldata_begin', so remove it. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100365 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-04 23:10:38 +00:00
Chris Lattner
a33b2a1ee6 add some assertions to EmitSectionOffset. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100364 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-04 23:06:31 +00:00
Chris Lattner
11b8f30567 stop emitting some dead L labels. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100363 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-04 23:02:02 +00:00
Chris Lattner
9c69e28553 Store an use the symbols emitted at the start of the debug 
sections instead of magically rematerializing them later.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100362 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-04 22:59:04 +00:00
Chris Lattner
fa070b0175 remove the didInitial ivar, rename emitInitial to be more 
descriptive, change EmitSectionOffset back to taking a
symbol instead of a string.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100361 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-04 22:33:59 +00:00
Chris Lattner
2e3ebedc88 simplify EmitSectionOffset a little bit, improve comments. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100360 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-04 22:25:14 +00:00
Chris Lattner
83d1618b46 The "IsSmall" argument to EmitSectionOffset is always true, 
constant fold it away.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100356 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-04 21:34:40 +00:00
Chris Lattner
f88dce1f89 eliminate the "isEH" argument to EmitSectionOffset. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100355 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-04 21:31:54 +00:00
Chris Lattner
0887fa0b8c isAbsoluteEHSectionOffsets always returns false, eliminate it 
and substitute false at the one call site.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100354 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-04 21:29:44 +00:00
Chris Lattner
d2af7853e3 move some more stuff to asmprinter. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100351 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-04 20:20:50 +00:00
Chris Lattner
9be4913136 simplify some code. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100350 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-04 20:10:41 +00:00
Chris Lattner
ca6190b108 move EmitEncodingByte to AsmPrinter. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100349 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-04 20:04:21 +00:00
Chris Lattner
7a101f45c1 move EmitCFAByte to AsmPrinter. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100348 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-04 20:01:25 +00:00
Chris Lattner
a64371828e inline EmitDifference away. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100347 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-04 19:58:12 +00:00
Chris Lattner
af8df26495 resolve a fixme. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100346 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-04 19:28:59 +00:00
Chris Lattner
c021572511 move gettemplabel and getdwlabel to AsmPrinter and rename 
them for consistency.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100345 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-04 19:25:43 +00:00
Chris Lattner
7e1a8f882f move uleb/sleb printing into AsmPrinter from DwarfPrinter. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100344 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-04 19:09:29 +00:00
Chris Lattner
17fedf216b more interface cleanup make some helpers static functions. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100343 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-04 18:58:53 +00:00
Chris Lattner
3f53c8398d clean up the asmprinter header and privatize some stuff. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100342 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-04 18:52:31 +00:00
Chris Lattner
65eeaad91d use stringref instead of strtol to avoid errno gymnastics. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100341 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-04 18:42:18 +00:00
Chris Lattner
736e31d0cf split inline asm support out to its own .cpp file. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100340 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-04 18:34:07 +00:00
Chris Lattner
285199502b inline processDebugLoc and simplify it. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100339 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-04 18:18:51 +00:00
Chris Lattner
dfa107e45a minor tidying. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100338 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-04 18:16:38 +00:00
Chris Lattner
300a4c5640 clean up the asmprinter interface a bit, rename a few 
"Print" methods to "Emit".  Emit is something that goes
to an mc streamer, Print is something that goes to a
raw_ostream (for inline asm) 


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100337 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-04 18:14:01 +00:00
Chris Lattner
9d1c1ada21 remove TargetMachine.h #include, also, TRI isn't used frequently 
enough to warrant caching in AsmPrinter, so remove it.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100336 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-04 18:06:11 +00:00
Chris Lattner
e00b59f954 lazily allocate the GCMetadataPrinters map and remove DenseMap 
from the AsmPrinter interface.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100331 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-04 17:57:56 +00:00
Chris Lattner
b23569aff0 Momentous day: remove the "O" member from AsmPrinter. Now all 
"asm printering" happens through MCStreamer.  This also 
Streamerizes PIC16 debug info, which escaped my attention.

This removes a leak from LLVMTargetMachine of the 'legacy'
output stream.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100327 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-04 08:18:47 +00:00
Chris Lattner
de0f339ec3 now that all operand printing happens to specified streams, we can 
print function level inline asm with EmitInlineAsm instead of writing
it directly to "O".


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100326 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-04 07:50:12 +00:00
Chris Lattner
75f50725c1 remove the raw_ostream from various dwarf printing things. 
The only thing left is LEB printing, which uses EmitRawText
for now.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100325 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-04 07:48:20 +00:00
Chris Lattner
7d73c7f0d6 mcize the gc metadata printing stuff. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100324 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-04 07:39:04 +00:00
Chris Lattner
0b9bdb47bd use EmitRawText instead of O in DwarfPrinter. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100323 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-04 07:25:52 +00:00
Chris Lattner
c75c028a15 fix PrintAsmOperand and PrintAsmMemoryOperand to pass down 
raw_ostream to print to.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100313 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-04 05:29:35 +00:00
Chris Lattner
d32c8a5617 change this back too 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100310 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-04 05:09:10 +00:00
Chris Lattner
e1783cadf7 check in what I tested. :( 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100309 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-04 05:08:10 +00:00
Chris Lattner
c1e0b76306 MMI is always available, rename O -> OS in printInlineAsm. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100308 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-04 05:07:45 +00:00
Chris Lattner
d374087be5 fix an ugly wart in the MCInstPrinter api where the 
raw_ostream to print an instruction to had to be specified
at MCInstPrinter construction time instead of being able
to pick at each call to printInstruction.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100307 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-04 05:04:31 +00:00
Chris Lattner
35c33bd772 change a ton of code to not implicitly use the "O" raw_ostream 
member of AsmPrinter.  Instead, pass it in explicitly.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100306 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-04 04:47:45 +00:00
Mon P Wang
20adc9dc46 Reapply address space patch after fixing an issue in MemCopyOptimizer. 
Added support for address spaces and added a isVolatile field to memcpy, memmove, and memset,
e.g., llvm.memcpy.i32(i8*, i8*, i32, i32) -> llvm.memcpy.p0i8.p0i8.i32(i8*, i8*, i32, i32, i1)


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100304 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-04 03:10:48 +00:00
Chris Lattner
0c08d09204 asmstreamerize the .size directive for function bodies, force clients 
of printOffset to pass in a stream to print to.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100296 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-03 22:28:33 +00:00
Chris Lattner
fd60b8b484 emit the cygwin stub thing through mcstreamer. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100295 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-03 22:19:41 +00:00
Chris Lattner
58bc4dd4a9 add a twine form of MCStreamer::EmitRawText, and mc'ize 
a few more things in AsmPrinter.cpp.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100294 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-03 22:12:35 +00:00
Chris Lattner
f94f8dcda7 start moving towards emitting inline asm statements with 
EmitInlineAsm.  However, this attempt is foiled by operands
being emitted directly to "O" so I'll have to do some surgery
and finish MCizing the world.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100291 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-03 22:01:50 +00:00
Chris Lattner
91bead7905 add a new EmitInlineAsm function to asmprinter to handle inline asm. 
If we have an MCAsmStreamer, we continue to emit asm textually, 
otherwise we (currently) emit an error to errs and ignore it.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100289 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-03 21:35:55 +00:00
Chris Lattner
47b7e5dae9 mc'ize comment printing around file scope inline asm. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100288 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-03 21:13:18 +00:00
David Greene
5c8aa950fe Ok, third time's the charm. No changes from last time except the CMake 
source addition.  Apparently the buildbots were wrong about failures.

---

Add some switches helpful for debugging:

-print-before=<Pass Name>

Dump IR before running pass <Pass Name>.

-print-before-all

Dump IR before running each pass.

-print-after-all

Dump IR after running each pass.

These are helpful when tracking down a miscompilation.  It is easy to
get IR dumps and do diffs on them, etc.

To make this work well, add a new getPrinterPass API to Pass so that
each kind of pass (ModulePass, FunctionPass, etc.) can create a Pass
suitable for dumping out the kind of object the Pass works on.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100249 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-02 23:17:14 +00:00
Dale Johannesen
7249ef0455 Skip debug info when looking for existing EH calls at the 
beginning of a block.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100230 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-02 21:49:27 +00:00
Benjamin Kramer
fd919200d4 Fix anachronism. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100225 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-02 20:47:05 +00:00
Chris Lattner
42f95ca96b fix the llvm-x86_64-linux buildbot. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100223 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-02 20:36:25 +00:00
Chris Lattner
457c6c5ccb remove empty file. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100222 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-02 20:26:36 +00:00
Chris Lattner
a4f2bb08de stop using DebugLoc::getUnknownLoc() 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100215 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-02 20:17:23 +00:00
Chris Lattner
de4845c163 Switch the code generator (except the JIT) onto the new DebugLoc 
representation.  This eliminates the 'DILocation' MDNodes for 
file/line/col tuples from -O0 -g codegen.

This remove the old DebugLoc class, making it a typedef for DebugLoc,
I'll rename NewDebugLoc next.

I didn't update the JIT to use the new apis, so it will continue to
work, but be as slow as before.  Someone should eventually do this
or, better yet, rip out the JIT debug info stuff and build the JIT
on top of MC.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100209 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-02 19:42:39 +00:00
Evan Cheng
f28f8bc40e Correctly lower memset / memcpy of undef. It should be a nop. PR6767. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100208 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-02 19:36:14 +00:00
Evan Cheng
cf5862d8ac Revert 100204. It broke a bunch of tests and apparently changed what passes are run during codegen. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100207 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-02 19:29:15 +00:00
Benjamin Kramer
d0327f80ec Update CMake. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100206 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-02 19:09:51 +00:00
David Greene
434bd8551d Let's try this again. Re-apply 100143 including an apparent missing 
<string> include.  For some reason the buildbot choked on this while my
builds did not.  It's probably due to a difference in system headers.

---

Add some switches helpful for debugging:

-print-before=<Pass Name>

Dump IR before running pass <Pass Name>.

-print-before-all

Dump IR before running each pass.

-print-after-all

Dump IR after running each pass.

These are helpful when tracking down a miscompilation.  It is easy to
get IR dumps and do diffs on them, etc.

To make this work well, add a new getPrinterPass API to Pass so that
each kind of pass (ModulePass, FunctionPass, etc.) can create a Pass
suitable for dumping out the kind of object the Pass works on.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100204 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-02 18:46:26 +00:00
Mon P Wang
e754d3fb85 Revert r100191 since it breaks objc in clang 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100199 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-02 18:43:02 +00:00
Mon P Wang
e33c848fa4 Reapply address space patch after fixing an issue in MemCopyOptimizer. 
Added support for address spaces and added a isVolatile field to memcpy, memmove, and memset,
e.g., llvm.memcpy.i32(i8*, i8*, i32, i32) -> llvm.memcpy.p0i8.p0i8.i32(i8*, i8*, i32, i32, i1)


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100191 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-02 18:04:15 +00:00
Evan Cheng
db8771af28 After trivial coalescing, the MI being visited may have become a copy. Avoid adding it to CSE hash table since copies aren't being considered for CSE and they may be deleted. 
rdar://7819990


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100170 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-02 02:21:24 +00:00
Dale Johannesen
93d6a7e9c2 Teach AnalyzeBranch, RemoveBranch and the branch 
folder to be tolerant of debug info following the
branch(es) at the end of a block.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100168 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-02 01:38:09 +00:00
Eric Christopher
1d8f83d0a0 Revert r100143. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100146 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-01 22:54:42 +00:00
Devang Patel
c8e77640a5 Revert r100117. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100145 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-01 22:47:29 +00:00
David Greene
8ef3acba00 Add some switches helpful for debugging: 
-print-before=<Pass Name>

Dump IR before running pass <Pass Name>.

-print-before-all

Dump IR before running each pass.

-print-after-all

Dump IR after running each pass.

These are helpful when tracking down a miscompilation.  It is easy to
get IR dumps and do diffs on them, etc.

To make this work well, add a new getPrinterPass API to Pass so that
each kind of pass (ModulePass, FunctionPass, etc.) can create a Pass
suitable for dumping out the kind of object the Pass works on.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100143 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-01 22:43:57 +00:00
Devang Patel
24c20e2435 Do not eagerly record known previous location. DBG_VALUE may not cause a new label due to one or other reason. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100134 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-01 20:22:44 +00:00
Evan Cheng
6cdb7e22aa Skip checking preferred alignment of GVs defined in other translation units all together. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100133 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-01 20:13:28 +00:00
Evan Cheng
94107ba9ce - Avoid using floating point stores to implement memset unless the value is zero. 
- Do not try to infer GV alignment unless its type is sized. It's not possible to infer alignment if it has opaque type.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100118 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-01 18:19:11 +00:00
Devang Patel
58c7aa61d4 Skip instructions until new scope is seen. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100117 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-01 17:32:01 +00:00
Devang Patel
8935d90a90 Cosmetic changes. 
Update comment, rename a local variable.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100116 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-01 17:16:48 +00:00
Evan Cheng
255f20f7f7 Fix sdisel memcpy, memset, memmove lowering: 
1. Makes it possible to lower with floating point loads and stores.
2. Avoid unaligned loads / stores unless it's fast.
3. Fix some memcpy lowering logic bug related to when to optimize a
   load from constant string into a constant.
4. Adjust x86 memcpy lowering threshold to make it more sane.
5. Fix x86 target hook so it uses vector and floating point memory
   ops more effectively.
rdar://7774704


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100090 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-01 06:04:33 +00:00
Bill Wendling
e543d161a0 Reapply r100056. It doesn't look like it's the one that's causing a failure. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100065 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-01 00:00:43 +00:00
Bill Wendling
9e9cca424c Revert r100056. It was causing a failure on MSVC. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100062 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-31 23:26:26 +00:00
Stuart Hastings
f8df814869 Reverting 100048; it broke two Frontend debug info tests. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100058 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-31 23:08:46 +00:00
Bill Wendling
bbd51cd0a1 Rewrite CorrectExtraCFGEdges() to make it more understandable. 
* Set the "DestA" and "DestB" according to how they're understood by the
  method. I.e., if one or both of them should point to the "fall through" block,
  then point to the fall through block.

* Improve the loop that removes superfluous edges to be more understandable.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100056 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-31 22:54:38 +00:00
Stuart Hastings
a88cb38d02 Debug info can now properly represent functions inside classes inside other functions. Partial fix for Radar 7424645. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100048 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-31 21:10:54 +00:00
Benjamin Kramer
bbb88db993 Reduce string trashing. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100038 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-31 20:15:45 +00:00
Benjamin Kramer
345ef343cc DwarfDebug: Allocate DIEValues with a BumpPtrAllocator. Most of them are 
POD-like anyway, so we don't even care about calling their d'tors (DIEBlock
being the exception).

~6% less mallocs and ~1% compile time improvement on clang -O0 -g oggenc.c



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100035 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-31 19:34:01 +00:00
Chris Lattner
cfd3188a11 reduce indentation 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99999 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-31 06:09:04 +00:00
Chris Lattner
1d65ba732c tidy up 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99998 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-31 06:06:37 +00:00
Chris Lattner
ff741ab709 MI != 0 is checked in the assert right above this. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99995 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-31 05:42:48 +00:00
Chris Lattner
14d750d0ad use the isDebugValue() predicate and pop_back_val() 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99993 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-31 05:39:57 +00:00
Chris Lattner
ed7a77bfb2 assert is a function-like macro, not a control flow operator. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99992 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-31 05:36:29 +00:00
Chris Lattner
4dd8163091 reduce indentation, fit in 80 cols and various other cosmetic cleanups. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99989 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-31 05:15:22 +00:00
Chris Lattner
23dbf6683b use the optimized debug info apis in sdisel. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99986 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-31 04:24:50 +00:00
Chris Lattner
870cfcf9a6 add new apis for getting/setting !dbg metadata on 
instructions.  In addition to being a convenience,
they are faster than the old apis, particularly when
not going from an MDKindID like people should be
doing.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99982 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-31 03:34:40 +00:00
Bob Wilson
100f090add Revert Mon Ping's change 99928, since it broke all the llvm-gcc buildbots. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99948 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-30 22:27:04 +00:00
Devang Patel
722f2290b8 Ignore invalid metadata. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99938 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-30 22:09:52 +00:00
Mon P Wang
808bab0169 Added support for address spaces and added a isVolatile field to memcpy, memmove, and memset, 
e.g., llvm.memcpy.i32(i8*, i8*, i32, i32) -> llvm.memcpy.p0i8.p0i8.i32(i8*, i8*, i32, i32, i1)
A update of langref will occur in a subsequent checkin.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99928 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-30 20:55:56 +00:00
Benjamin Kramer
991de14dd6 Introduce SpecificBumpPtrAllocator, a wrapper for BumpPtrAllocator which allows 
only a single type of object to be allocated. Use it to make VNInfo destruction
typesafe.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99919 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-30 20:16:45 +00:00
Chris Lattner
9b97a73ded Rip out the 'is temporary' nonsense from the MCContext interface to 
create symbols.  It is extremely error prone and a source of a lot
of the remaining integrated assembler bugs on x86-64.

This fixes rdar://7807601.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99902 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-30 18:10:53 +00:00
Evan Cheng
87bd191602 Funky indentation. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99901 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-30 18:08:53 +00:00
Devang Patel
7ed6311577 There is no need to fall through after processing DBG_VALUE machine instruction. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99899 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-30 18:07:00 +00:00
Daniel Dunbar
7a8cf2822d Fix -Asserts warning. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99895 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-30 17:57:42 +00:00
Torok Edwin
01cb1b665d Reapply r99881 with some fixes: only call destructor in releaseMemory! 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99883 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-30 11:17:48 +00:00
Torok Edwin
226dd2ba99 Revert 99881, it brooke smooshlab's llvm-gcc-i386-darwin9. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99882 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-30 10:25:08 +00:00
Torok Edwin
2a22004f68 Introduce another Reset() method in BumpPtrAllocator that calls a destructor 
on all objects it has allocated, if they are all of the same size and alignment.
Use this to destruct all VNInfos allocated in LiveIntervalAnalysis (PR6653).

valnos is not reliable for this purpose, as seen in r99400
(which still leaked, and sometimes caused double frees).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99881 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-30 10:08:26 +00:00
Evan Cheng
28a1e48690 Avoid being influenced by the presence of dbg_value instructions. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99879 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-30 05:49:07 +00:00
Bill Wendling
201f5f039f Re-add back in the slow way of determining of a clean-up should become a 
catch-all. The "dominates" way won't catch all of the selectors which must be
changed.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99850 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-29 23:37:07 +00:00
Bill Wendling
bfde644e8a A more general (and simpler!) implementation of r99671. It performs a similar 
transform. I.e., if a clean-up eh.selector call dominates the invoke of an
_Unwind_Resume_or_Rethrow, then we convert the eh.selector into a
catch-all. This patch, however, uses the DominatorTree information, and doesn't
go through the whole rigmarole of starting at the eh.exception call, finding the
corresponding URoR and eh.selector calls, and trying to trace through any number
of instruction types to get to them.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99846 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-29 23:02:46 +00:00
Devang Patel
aead63c033 Encode start location of debug value, communicated through DBG_VALUE machine instruction, in a variable's DIE. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99845 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-29 22:59:58 +00:00
Evan Cheng
8e36a5c960 Fix PR4975. Avoid referencing empty vector. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99840 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-29 21:27:30 +00:00
Evan Cheng
31441b7e95 Pool allocate SDDbgValue nodes. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99836 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-29 20:48:30 +00:00
Chris Lattner
c3b228c978 use RAII for ExceptionTimer too 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99833 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-29 20:39:38 +00:00
Chris Lattner
a909d66351 fix a variety of issues were we'd start DebugTimer but 
not stop it by using RAII.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99832 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-29 20:38:20 +00:00
Devang Patel
553881bddc Refactor code to push DILocation prcessing into DwarfDebug.cpp from AsmPrinter.cpp. 
This is same as r99772 (which was reverted) with just one meaningful difference where two source lines exchanged their positions.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99816 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-29 17:20:31 +00:00
Devang Patel
de9b1efbe5 Revert 99772. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99778 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-28 21:23:37 +00:00
Chris Lattner
bed993d8a4 add a statistic for the # times isel has to backtrack. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99774 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-28 19:46:56 +00:00
Devang Patel
c7eae5ca4a Refactoring. Push DILocation processing in to DwarfDebug from AsmPrinter. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99772 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-28 18:57:09 +00:00
Chris Lattner
caa8870fe0 finally remove the immAllOnesV_bc/immAllZerosV_bc patterns 
and those derived from them.  These are obnoxious because
they were written as: PatLeaf<(bitconvert).  Not having an
argument was foiling adding better type checking for operand
count matching up with what was required (in this case,
bitconvert always requires an operand!)



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99759 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-28 08:43:23 +00:00
Chris Lattner
5d9a1bce83 comply with the wishes of a fixme. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99742 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-28 05:55:17 +00:00
Chris Lattner
b0e483e2c4 now that (parallel) is gone and a variety of bugs in targets 
are cleaned up, we can remove an old fixme.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99741 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-28 05:54:03 +00:00
Chris Lattner
aa4e3391c8 add an optimized form of OPC_EmitMergeInputChains for the 1, 0 and 
1, 1 cases which are by-far the most frequent.  This shrinks the X86
isel table from 77014 -> 74657 bytes.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99740 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-28 05:50:16 +00:00
Chris Lattner
856fb395e4 don't add nodes to the now-dead nodes list multiple times, this 
can cause a crash on crazy situations in msp430 when morph-node-to
is disabled.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99739 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-28 05:28:31 +00:00
Chris Lattner
19e37cbf4f don't add flag nodes with chain results to the NowDeadNodes 
list multiple times when MorphNodeTo can't be applied.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99735 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-28 04:54:33 +00:00
Chris Lattner
a6f8693385 improve -debug-only=isel comments for cases when we don't enter a 
scope due to obviously false predicate.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99723 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-27 18:54:50 +00:00
Bill Wendling
e6b293b78d Forgot the part where we handle the ".llvm.eh.catch.all.value". 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99697 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-27 01:24:30 +00:00
Bill Wendling
43de15f8a3 Return if we changed anything or not. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99695 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-27 01:22:38 +00:00
Bill Wendling
bfbd853958 If a selector has a call to ".llvm.eh.catch.all.value" that we haven't 
converted, then use the initializer, since using the name itself won't work.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99692 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-27 01:19:12 +00:00
Bill Wendling
2ad4aca8b2 If we mark clean-ups as clean-ups, then it could break when inlining through an 
'invoke' instruction. You will get a situation like this:

bb:
  %ehptr = eh.exception()
  %sel = eh.selector(%ehptr, @per, 0);

...

bb2:
  invoke _Unwind_Resume_or_Rethrow(%ehptr) %normal unwind to %lpad

lpad:
  ...

The unwinder will see the %sel call as a clean-up and, if it doesn't have a
catch further up the call stack, it will skip running it. But there *is* another
catch up the stack -- the catch for the %lpad. However, we can't see that. This
is fixed in code-gen, where we detect this situation, and convert the "clean-up"
selector call into a "catch-all" selector call. This gives us the correct
semantics.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99671 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-26 23:41:30 +00:00
Anton Korobeynikov
de0118c324 Add few missed libcalls and correct names for others. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99656 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-26 21:32:14 +00:00
Dale Johannesen
4d12d3b70f Debug info shouldn't affect kills. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99637 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-26 19:21:26 +00:00
Evan Cheng
d05e805536 LiveVariables should clear kill / dead markers first. This allows us to remove a hack in the scheduler. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99597 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-26 02:12:24 +00:00
Evan Cheng
9f68948609 Try trivial remat before the coalescer gives up on a vr / physreg coalescing for fear of tying up a physical register. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99575 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-26 00:07:25 +00:00
Dale Johannesen
1feeadac1b Handle DEBUG_VALUE in this pass. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99573 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-26 00:02:44 +00:00
Evan Cheng
460e479b19 Code clean up. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99544 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-25 19:46:11 +00:00
Chris Lattner
7bf198fd60 fix a valgrind error on copy-constructor-synthesis.cpp, which is caused when 
the custom insertion hook deletes the instruction, then we try to set dead
flags on it.  Neither the code that I added nor the code that was there 
before was safe.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99538 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-25 18:49:10 +00:00
Evan Cheng
fd59f4cd3d Remove an unused option. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99537 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-25 18:37:23 +00:00
Devang Patel
2ddefecfa0 Add comment. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99507 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-25 15:09:44 +00:00
Evan Cheng
4ec9bd9a6f Scheduler assumes SDDbgValue nodes are in source order. That's true currently. But add an assertion to verify it. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99501 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-25 07:16:57 +00:00
Chris Lattner
d5d5a3dcba Change tblgen to emit FOOISD opcode names as two 
bytes instead of one byte.  This is important because
we're running up to too many opcodes to fit in a byte
and it is aggrevated by FIRST_TARGET_MEMORY_OPCODE
making the numbering sparse.  This just bites the
bullet and bloats out the table.  In practice, this
increases the size of the x86 isel table from 74.5K
to 76K.  I think we'll cope :)

This fixes rdar://7791648


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99494 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-25 06:33:05 +00:00
Evan Cheng
167bda4baa Remove a fixme that doesn't make sense any more. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99489 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-25 06:02:53 +00:00
Evan Cheng
c388ace6f9 Make sure SDDbgValue.Invalid is initialized to false by all the constructors. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99487 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-25 05:50:26 +00:00
Chris Lattner
47cdf4abff Make the NDEBUG assertion stronger and more clear what is 
happening.

Enhance scheduling to set the DEAD flag on implicit defs
more aggressively.  Before, we'd set an implicit def operand
to dead if it were present in the SDNode corresponding to
the machineinstr but had no use.  Now we do it in this case
AND if the implicit def does not exist in the SDNode at all.

This exposes a couple of problems: one is the FIXME, which
causes a live intervals crash on CodeGen/X86/sibcall.ll.
The second is that it makes machinecse and licm more 
aggressive (which is a good thing) but also exposes a case
where licm hoists a set0 and then it doesn't get resunk.

Talking to codegen folks about both these issues, but I need
this patch in in the meantime.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99485 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-25 05:40:48 +00:00
Chris Lattner
3d7d07ef03 reapply 99444/99445, which I speculatively reverted in 
r99453.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99482 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-25 04:41:16 +00:00
Evan Cheng
bfcb305189 Change how dbg_value sdnodes are converted into machine instructions. Their placement should be determined by the relative order of incoming llvm instructions. The scheduler will now use the SDNode ordering information to determine where to insert them. A dbg_value instruction is inserted after the instruction with the last highest source order and before the instruction with the next highest source order. It will optimize the placement by inserting right after the instruction that produces the value if they have consecutive order numbers. 
Here is a theoretical example that illustrates why the placement is important.

tmp1 = 
store tmp1 -> x
...
tmp2 = add ...
...
call
...
store tmp2 -> x

Now mem2reg comes along:

tmp1 = 
dbg_value (tmp1 -> x)
...
tmp2 = add ...
...
call
...
dbg_value (tmp2 -> x)

When the debugger examine the value of x after the add instruction but before the call, it should have the value of tmp1.

Furthermore, for dbg_value's that reference constants, they should not be emitted at the beginning of the block (since they do not have "producers").

This patch also cleans up how SDISel manages DbgValue nodes. It allow a SDNode to be referenced by multiple SDDbgValue nodes. When a SDNode is deleted, it uses the information to find the SDDbgValues and invalidate them. They are not deleted until the corresponding SelectionDAG is destroyed.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99469 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-25 01:38:16 +00:00
Evan Cheng
48f2cb926e Avoid being influenced by dbg_value instructions. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99465 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-25 01:01:37 +00:00
Chris Lattner
d41952da10 revert 99444/99445. This doesn't cause the failure of 
2006-07-19-stwbrx-crash.ll for me, but it's the only likely
patch in the blame list of several bots.  Lets see if this
fixes it.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99453 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-24 23:41:19 +00:00
Chris Lattner
4020670195 remove dead argument. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99445 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-24 22:47:12 +00:00
Chris Lattner
c243dea003 split EmitNode in half to reduce indentation. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99444 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-24 22:45:47 +00:00
Devang Patel
9bb59a2bdc Use SP filename directly instead of SP's context's filename. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99429 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-24 21:30:35 +00:00
Bob Wilson
d6a6b3b756 Revert Edwin's change that is breaking MultiSource/Applications/ClamAV/clamscan. 
--- Reverse-merging r99400 into '.':
D    test/CodeGen/Generic/2010-03-24-liveintervalleak.ll
U    lib/CodeGen/LiveIntervalAnalysis.cpp


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99419 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-24 20:25:25 +00:00
Torok Edwin
15417383b9 Fix memory leak in liveintervals: the destructor for VNInfos must be called, 
otherwise the SmallVector it contains doesn't free its memory.
In most cases LiveIntervalAnalysis could get away by not calling the destructor,
because VNInfos are bumpptr-allocated, and smallvectors usually don't grow.
However when the SmallVector does grow it always leaks.

This is the valgrind shown leak from the original testcase:
==8206== 18,304 bytes in 151 blocks are definitely lost in loss record 164 of 164
==8206==    at 0x4A079C7: operator new(unsigned long) (vg_replace_malloc.c:220)
==8206==    by 0x4DB7A7E: llvm::SmallVectorBase::grow_pod(unsigned long, unsigned long) (in /home/edwin/clam/git/builds/defaul
t/libclamav/.libs/libclamav.so.6.1.0)
==8206==    by 0x4F90382: llvm::VNInfo::addKill(llvm::SlotIndex) (in /home/edwin/clam/git/builds/default/libclamav/.libs/libcl
amav.so.6.1.0)
==8206==    by 0x5126B5C: llvm::LiveIntervals::handleVirtualRegisterDef(llvm::MachineBasicBlock*, llvm::ilist_iterator<llvm::M
achineInstr>, llvm::SlotIndex, llvm::MachineOperand&, unsigned int, llvm::LiveInterval&) (in /home/edwin/clam/git/builds/defau
lt/libclamav/.libs/libclamav.so.6.1.0)
==8206==    by 0x512725E: llvm::LiveIntervals::handleRegisterDef(llvm::MachineBasicBlock*, llvm::ilist_iterator<llvm::MachineI
nstr>, llvm::SlotIndex, llvm::MachineOperand&, unsigned int) (in /home/edwin/clam/git/builds/default/libclamav/.libs/libclamav
.so.6.1.0)
==8206==    by 0x51278A8: llvm::LiveIntervals::computeIntervals() (in /home/edwin/clam/git/builds/default/libclamav/.libs/libc
lamav.so.6.1.0)
==8206==    by 0x5127CB4: llvm::LiveIntervals::runOnMachineFunction(llvm::MachineFunction&) (in /home/edwin/clam/git/builds/de
fault/libclamav/.libs/libclamav.so.6.1.0)
==8206==    by 0x4DAE935: llvm::FPPassManager::runOnFunction(llvm::Function&) (in /home/edwin/clam/git/builds/default/libclama
v/.libs/libclamav.so.6.1.0)
==8206==    by 0x4DAEB10: llvm::FunctionPassManagerImpl::run(llvm::Function&) (in /home/edwin/clam/git/builds/default/libclama
v/.libs/libclamav.so.6.1.0)
==8206==    by 0x4DAED3D: llvm::FunctionPassManager::run(llvm::Function&) (in /home/edwin/clam/git/builds/default/libclamav/.l
ibs/libclamav.so.6.1.0)
==8206==    by 0x4D8BE8E: llvm::JIT::runJITOnFunctionUnlocked(llvm::Function*, llvm::MutexGuard const&) (in /home/edwin/clam/git/builds/default/libclamav/.libs/libclamav.so.6.1.0)
==8206==    by 0x4D8CA72: llvm::JIT::getPointerToFunction(llvm::Function*) (in /home/edwin/clam/git/builds/default/libclamav/.libs/libclamav.so.6.1.0)


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99400 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-24 13:50:36 +00:00
Evan Cheng
2250425d6e dbg_value may end a block. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99378 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-24 01:50:28 +00:00
Dan Gohman
0f920e55fc Remove the ConvertActions table and associated code, which is unused. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99372 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-24 00:53:38 +00:00
Dan Gohman
bc7a902713 Revert 99335. getTypeToExpandTo's iterative behavior is actually 
needed here.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99339 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-23 22:44:42 +00:00
Dan Gohman
349074896f Remove getTypeToExpandTo, since it isn't adding much value 
beyond just calling getTypeToTransformTo.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99335 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-23 22:15:31 +00:00
Evan Cheng
f1250eeadf Ignore dbg_value's. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99321 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-23 20:36:12 +00:00
Evan Cheng
112e5e7eff Code clean up. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99319 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-23 20:33:48 +00:00
Chris Lattner
ea16ea5901 Fix PR6673: updating the callback should not clear the map. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99227 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-22 23:15:57 +00:00
Devang Patel
4a602caf2e Emit DW_AT_low_pc and DW_AT_high_pc attributes for TAG_compile_unit. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99225 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-22 23:11:36 +00:00
Devang Patel
0493f95a2c DW_AT_stmt_list attribute attached with a compile unit encodes offset of line number information for this compile unit in debug_line section. This offset is always zero when only one compile unit is emitted in a object file. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99223 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-22 22:38:48 +00:00
Evan Cheng
a69ec09364 Reduce indentation. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99214 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-22 21:24:33 +00:00
Jeffrey Yasskin
638fe8dd62 Fix a memory leak from DIE::addSiblingOffset() by adding the DIEValue 
it allocates to DwarfDebug::DIEValues.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99196 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-22 18:47:14 +00:00
Evan Cheng
fc91114a2e 80 col violation. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99195 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-22 18:40:50 +00:00
Jeffrey Yasskin
6b4c12db13 Free SavedLI even if SimpleRegisterCoalescing::JoinCopy() returns early. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99113 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-21 01:47:49 +00:00
Bob Wilson
80d23705e6 Stop trying to merge identical jump tables. This had been inadvertently 
disabled for several months (since svn r88806) and no one noticed.  My fix
for pr6543 yesterday reenabled it, but broke the ARM port's code for using
TBB/TBH.  Rather than adding a target hook to disable merging for Thumb2 only,
I'm just taking this out.  It is not common to have identical jump tables,
the code we used to merge them was O(N^2), and it only helps code size, not
performance.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98977 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-19 19:05:41 +00:00
Mon P Wang
c1e5d491a0 Fixed a widening bug where we were not using the correct size for the load 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98920 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-19 01:19:52 +00:00
Anton Korobeynikov
f0d500768d Get rid of target-specific nodes for fp16 <-> fp32 conversion. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98888 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-18 22:35:37 +00:00
Dan Gohman
9553188fcc Define placement new wrappers for BumpPtrAllocator and 
RecyclingAllocator to allow client code to be simpler, and
simplify several clients.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98847 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-18 18:49:47 +00:00
Bob Wilson
d1ec31dca5 Fix pr6543: svn r88806 changed MachineJumpTableInfo::getJumpTableIndex() to 
always create a new jump table.  The intention was to avoid merging jump
tables in SelectionDAGBuilder, and to wait for the branch folding pass to
merge tables.  Unfortunately, the same getJumpTableIndex() method is also
used to merge tables in branch folding, so as a result of this change
branch tables are never merged.  Worse, the branch folding code is expecting
getJumpTableIndex to always return the index of an existing table, but with
this change, it never does so.  In at least some cases, e.g., pr6543, this
creates references to non-existent tables.

I've fixed the problem by adding a new createJumpTableIndex function, which
will always create a new table, and I've changed getJumpTableIndex to only
look at existing tables.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98845 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-18 18:42:41 +00:00
Dan Gohman
1584390e55 Add explicit braces to avoid ambiguous ‘else’. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98838 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-18 18:07:13 +00:00
Devang Patel
1ac2429d1f Fix comment. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98830 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-18 16:41:16 +00:00
Jakob Stoklund Olesen
ec1176a206 Revert "Change coalescer complexity from N^2 to N logN by changing one letter." 
This reverts commit 98776. It broke the llvm-gcc boot strap.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98784 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-18 00:23:47 +00:00
Devang Patel
c3188ce0f1 Debug info intrinsic does not intefer during tail call optimization. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98778 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-17 23:52:37 +00:00
Jakob Stoklund Olesen
0427b2ac45 Change coalescer complexity from N^2 to N logN by changing one letter. 
Remove ugly hack that aborted the coalescer before using N^2 time.

This affects functions with very complicated live intervals for physical
registers, i.e. functions with thousands of function calls.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98776 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-17 23:21:58 +00:00
Devang Patel
5b33f3148c Fix EmitSectionOffset incorrect argument. DwarfDebug is emitting debug info so isEH is always false. This was hiding until now from compilers because of default arguments. This was hiding from dwarf debug info users because for most of the platform isAbsoluteEHSectionOffsets() is same as isAbsoluteDebugSectionOffsets(). But Chris found it while updating dwarf printer to use MC*. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98743 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-17 17:29:55 +00:00
Chris Lattner
77e7694026 fix GetOrCreateTemporarySymbol to require a name, clients 
should use CreateTempSymbol() if they don't care about the
name.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98712 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-17 05:41:18 +00:00
Bob Wilson
a1bdfc3c7f Remove a check that can no longer be true, after r84803. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98694 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-16 23:40:32 +00:00
Evan Cheng
4507f089d4 Fix liveintervals handling of dbg_value instructions. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98686 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-16 21:51:27 +00:00
Chris Lattner
93b122d3c4 reapply r98656 unmodified, which exposed the asmprinter not 
handling constant unions.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98680 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-16 21:25:55 +00:00
Devang Patel
cbe1e31732 Ignore debug value instructions while analyzing BB for tail duplication. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98675 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-16 21:02:07 +00:00
Daniel Dunbar
b85c7100c5 Revert r98656, its breaking all over the place. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98662 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-16 19:35:34 +00:00
Chris Lattner
8b3b34f410 improve support for uniontype and ConstantUnion, patch by Tim Northover! 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98656 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-16 19:15:03 +00:00
Bill Wendling
b0d27662ea Use getFirstTerminator(). 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98604 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-16 02:01:51 +00:00
Bill Wendling
8fe347a8b5 When checking if something's killed, don't rely simply on whether it's marked as 
"used outside of the block". If the block ends in a return, then it won't be
used outside of it.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98599 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-16 01:05:35 +00:00
Chris Lattner
999aee24c7 Fix the third (and last known) case of code update problems due 
to LLVM IR changes with addr label weirdness.  In the testcase, we
generate references to the two bb's when codegen'ing the first
function:

_test1:                                 ## @test1
	leaq	Ltmp0(%rip), %rax
..
	leaq	Ltmp1(%rip), %rax

Then continue to codegen the second function where the blocks
get merged.  We're now smart enough to emit both labels, producing
this code:

_test_fun:                              ## @test_fun
## BB#0:                                ## %entry
Ltmp1:                                  ## Block address taken
Ltmp0:
## BB#1:                                ## %ret
	movl	$-1, %eax
	ret

Rejoice.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98595 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-16 00:29:39 +00:00
Bill Wendling
505ad8bed3 Now that the default for Darwin platforms is to place the LSDA into the TEXT 
section, remove the target-specific code that performs this.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98580 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-15 21:09:38 +00:00
Chris Lattner
9cc0da9c29 Implement support for the case when a reference to a addr-of-bb 
label is generated, but then the block is deleted.  Since the
value is undefined, we just emit the label right after the entry 
label of the function.  It might matter that the label is in the
same section as the function was afterall.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98579 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-15 20:39:00 +00:00
Chris Lattner
4c6741f707 use Mang->getSymbol() more. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98577 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-15 20:37:38 +00:00
Devang Patel
001903485f Create SDDbgValue for dbg_value intrinsics and remember its connections with DAG nodes. 
This is a work in progress. Patch by Dale Johannesen!



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98568 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-15 19:15:44 +00:00
Chris Lattner
0220ba7995 Fix the case when a reference to an address taken BB is emitted in one 
function, then the BB is RAUW'd before the definition is emitted.  There
are still two cases not being handled, but this should improve us back to
the situation before I touched anything.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98566 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-15 19:09:43 +00:00
Chris Lattner
88698f5dbc revert r98550, it isn't necessary or sufficient. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98558 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-15 18:42:01 +00:00
Devang Patel
90a48adf9c Emit dwarf variable info communicated by code generator through DBG_VALUE machine instructions. 
This is a work in progress.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98556 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-15 18:33:46 +00:00
Chris Lattner
fc6e69bcb2 don't eliminate address-taken blocks here. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98550 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-15 16:37:42 +00:00
Chris Lattner
ed7d10e100 SIGN_EXTEND from the same type as the dest is valid. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98548 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-15 16:15:56 +00:00
Chris Lattner
7fb5c2dbec sink the call to VT.getSizeInBits() down into its uses, 
not all unary nodes necessarily have a simple result type.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98547 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-15 16:05:15 +00:00
Chris Lattner
1f8008cf21 fix MCSectionELF to not leak memory, just like I did for MCSymbol. 
MCSectionMachO is already fine (yay for fixed size arrays?),
MCSectionCOFF still leaks.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98537 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-15 06:23:52 +00:00
Chris Lattner
a833f6b061 remove dead method. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98526 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-15 00:00:42 +00:00
Benjamin Kramer
1610d430be Remove pointless forward declaration, MSVC got confused by this. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98519 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-14 22:00:28 +00:00
Duncan Sands
d2c817eff1 Turn calls to copysignl into an FCOPYSIGN node. Handle FCOPYSIGN nodes 
with ppc_f128 type by having the type legalizer turn these back into a
call to copysignl.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98514 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-14 21:08:40 +00:00
Evan Cheng
a8efe28a44 Rename SDDbgValue.h to SDNodeDbgValue.h for consistency. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98513 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-14 19:56:39 +00:00
Chris Lattner
c4a3f23b92 fix ShrinkDemandedOps to not leave dead nodes around, 
fixing PR6607


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98512 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-14 19:46:02 +00:00
Chris Lattner
25e0ab9ae5 rewrite ShrinkDemandedOps to be faster and indent less, 
no functionality change.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98511 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-14 19:43:04 +00:00
Chris Lattner
552186dfd3 make -view-isel-dags print after the 'ShrinkDemandedOps' pass. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98509 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-14 19:27:55 +00:00
Anton Korobeynikov
927411b7ce Make default expansion for FP16 <-> FP32 nodes into libcalls 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98501 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-14 18:42:24 +00:00
Anton Korobeynikov
be5b032e4b Add DAG nodes to represent FP16 <-> FP32 intrinsics 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98500 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-14 18:42:15 +00:00
Chris Lattner
3b9d6216a4 fix AsmPrinter::GetBlockAddressSymbol to always return a unique 
label instead of trying to form one based on the BB name (which
causes collisions if the name is empty).  This fixes PR6608


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98495 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-14 17:53:23 +00:00
Chris Lattner
63d7836267 get MMI out of the label uniquing business, just go to MCContext 
to get unique assembler temporary labels.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98489 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-14 08:36:50 +00:00
Chris Lattner
8d9aaba84e don't use getDWLabel("label" anymore, always go through MMI. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98485 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-14 08:18:13 +00:00
Chris Lattner
0397ada8ae remove now-dead code, all labels use MCSymbols. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98484 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-14 08:17:53 +00:00
Chris Lattner
25b68c6770 change SrcLineInfo to contain a label instead of a label ID. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98483 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-14 08:15:55 +00:00
Chris Lattner
2e9919a5e5 Now that DBG_LABEL is updated, we can finally make MachineMove 
contain an MCSymbol instead of a label index.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98482 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-14 08:12:40 +00:00
Chris Lattner
6ffcccab51 change the DBG_LABEL MachineInstr to always be created 
with an MCSymbol instead of an immediate.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98481 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-14 07:56:48 +00:00
Chris Lattner
9a38e67590 unbreak the build, grr symlinks. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98477 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-14 07:36:49 +00:00
Chris Lattner
90f172aa80 Change this code to allocate temporary labels from mccontext, 
not from MMI.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98475 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-14 07:29:45 +00:00
Chris Lattner
aba9bcb9b6 switch GC_LABEL to use an MCSymbol operand instead of a label ID operand. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98474 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-14 07:27:07 +00:00
Chris Lattner
f14645cc64 Fix some EH failures on NNT I introduced in r98461 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98471 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-14 07:02:50 +00:00
Chris Lattner
21f9c8de53 fix a bug I introduced in r98459, causing some NNT failures. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98470 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-14 06:50:56 +00:00
Chris Lattner
7561d48095 change the LabelSDNode to be EHLabelSDNode and make it hold 
an MCSymbol.  Make the EH_LABEL MachineInstr hold its label
with an MCSymbol instead of ID.  Fix a bug in MMI.cpp which
would return labels named "Label4" instead of "label4".


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98463 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-14 02:33:54 +00:00
Chris Lattner
18589de9b1 eliminate InvalidateLabel and LabelIDList from MMI and replace 
them with a counter.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98462 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-14 02:24:55 +00:00
Chris Lattner
b91306053d use Label->isDefined() instead of isLabelDeleted() now that we 
consistently use MCSymbol and only call this predicate after
they should have been emitted.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98461 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-14 02:20:58 +00:00
Chris Lattner
1611273351 change EH related stuff (other than EH_LABEL) to use MCSymbol 
instead of label ID's.  This cleans up and regularizes a bunch 
of code and makes way for future progress.

Unfortunately, this pointed out to me that JITDwarfEmitter.cpp
is largely copy and paste from DwarfException/MachineModuleInfo
and other places.  This is very sad and disturbing. :(

One major change here is that TidyLandingPads moved from being
called in DwarfException::BeginFunction to being called in
DwarfException::EndFunction.  There should not be any 
functionality change from doing this, but I'm not an EH expert.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98459 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-14 01:41:15 +00:00
Chris Lattner
1b2eb0e8a6 eliminate the now-unneeded context argument of MBB::getSymbol() 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98451 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-13 21:04:28 +00:00
Chris Lattner
11d53c129f rearrange MCContext ownership. Before LLVMTargetMachine created it 
and passing off ownership to AsmPrinter.  Now MachineModuleInfo
creates it and owns it by value.  This allows us to use MCSymbols
more consistently throughout the rest of the code generator, and
simplifies a bit of code.  This also allows MachineFunction to 
keep an MCContext reference handy, and cleans up the TargetRegistry
interfaces for AsmPrinters.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98450 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-13 20:55:24 +00:00
Chris Lattner
72aaa3c798 add support for MCSymbols as operands to MachineInstrs. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98433 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-13 08:14:18 +00:00
Chris Lattner
5e6cbe0eff simplify EmitFrameMoves to take BaseLabel in as a symbol 
instead of as a stem+idx pair, simplify the "is a new 
location" check to use symbol comparison.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98432 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-13 08:05:25 +00:00
Chris Lattner
fb65807c34 factor some labels, simplify some code. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98429 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-13 07:40:56 +00:00
Chris Lattner
206d61e62f various cleanups. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98426 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-13 07:26:18 +00:00
Chris Lattner
bc733f54c0 reimplement the string pool used for inlined function 
entries to not thrash std::strings and MCSymbols.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98415 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-13 02:17:42 +00:00
Chris Lattner
528a126d32 remove gone method, grr symlinks. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98392 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-12 21:30:49 +00:00
Chris Lattner
deb0cba1ba inline the now-trivial implementation of GetGlobalValueSymbol into 
some of its callers.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98388 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-12 21:09:07 +00:00
Chris Lattner
b87c305fa7 give Mangler access to TargetData. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98378 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-12 20:47:28 +00:00
Chris Lattner
73ff564d65 finally give Mangler a getSymbol method, which returns an MCSymbol 
for a global instead of messing around with string buffers.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98366 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-12 18:55:20 +00:00
Chris Lattner
0d941c15c0 remove dead code. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98365 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-12 18:49:32 +00:00
Chris Lattner
5ef31a039d make the mangler take an MCContext instead of an MAI. 
No functionality change.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98363 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-12 18:44:54 +00:00
Chris Lattner
fdab14b105 remove MAI argument from createAsmStreamer since it 
can get it from the context now.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98361 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-12 18:28:53 +00:00
Chris Lattner
20e3280f3f fix a bug emitting .secrel32 that I introduced, PR6587, patch 
by A.Mazur!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98360 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-12 18:10:35 +00:00
Jeffrey Yasskin
5c213dc78c Free DbgScopes in DwarfDebug::endFunction(). Also increased the const-ness of 
several fields to make it easier to figure out where bugs might be creeping in.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98358 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-12 17:45:06 +00:00
Duncan Sands
0ac5d2d7ff Revert turning copysignl into a COPYSIGN node for the moment: 
ppc calls copysignl with a 128 bit ppc long double, resulting
in a node that the type legalizer doesn't know how to expand.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98357 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-12 17:41:34 +00:00
Duncan Sands
bb2f0c541c Now that it's supported, turn copysignl into a COPYSIGN node. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98348 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-12 12:13:59 +00:00
Duncan Sands
5d54b4112d Fix PR6522: implement copysign expansion for x86 long double 
(it seems that FreeBSD doesn't have copysignl).  Done by
removing a bunch of assumptions from the code.  This may also
help with sparc 128 bit floats.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98346 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-12 11:45:06 +00:00
Chris Lattner
b3e87b2262 fix PR6577, a bug in sdbuilder lowering select instructions 
whose true value was not Val#0.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98336 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-12 07:15:36 +00:00
Devang Patel
1b596e399b There is no need to create specification DIE for definitions at DIFile level. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98302 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-11 23:44:52 +00:00
Jakob Stoklund Olesen
56698803d9 Extract methods from LocalRewriter::RewriteMBB bringing it down to 666 lines. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98295 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-11 23:04:34 +00:00
Chris Lattner
c18409aed8 change MCContext to always have an MCAsmInfo. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98293 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-11 22:53:35 +00:00
Chris Lattner
42263e2e40 fix a fixme in TargetLoweringObjectFile::getExprForDwarfReference 
where we used ot create an MCSymbol for ".".  Now emit an assembler
temporary label and reference it instead of "." textually.

rdar://7739457


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98292 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-11 21:55:20 +00:00
Dan Gohman
a257095ebb Remove getWidenVectorType, which is no longer used. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98289 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-11 21:39:57 +00:00
Chris Lattner
3192d14076 rename getSymbolForDwarf* to getExprForDwarf* since it returns 
an MCExpr and not an MCSymbol.  Change it to take an MCStreamer,
which is currently unused.

No functionality change.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98278 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-11 19:41:58 +00:00
Evan Cheng
af1871fa6d In case of tail call size of Ins and InVals may not match. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98277 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-11 19:38:18 +00:00
Jeffrey Yasskin
d0f393d46f Avoid leaking CompileUnits in DwarfDebug.cpp. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98268 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-11 18:29:55 +00:00
Richard Osborne
95da605e15 Add a new jump table encoding to indicate jump tables entries 
are inside the function by the target at the point of use.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98255 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-11 14:58:16 +00:00
Evan Cheng
826cbac2a0 The check for coalescing a virtual register to a physical register, e.g. 
cl = EXTRACT_SUBREG reg1024, 1, is overly conservative. It should check
for overlaps of vr's live interval with the super registers of the
physical register (ECX in this case) and let JoinIntervals() handle checking
the coalescing feasibility against the physical register (cl in this case).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98251 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-11 08:20:21 +00:00
Daniel Dunbar
0193c0994b Remove dead include. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98225 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-11 02:28:48 +00:00
Dale Johannesen
e68ea060c7 Fix debug_value handling. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98224 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-11 02:10:24 +00:00
Daniel Dunbar
1f3e445184 MC: Provide MCAssembler with a TargetAsmBackend. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98222 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-11 01:34:27 +00:00
Jakob Stoklund Olesen
2cb4202f07 VirtRegRewriter spring cleaning. No functional change. 
Move methods out of line and M-x whitespace-cleanup.
Promote common method arguments to member variables.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98207 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-11 00:11:33 +00:00
Chris Lattner
f2f64e9063 fix PR6533 by updating the br(xor) code to remember the case 
when it looked past a trunc.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98203 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-10 23:46:44 +00:00
Dale Johannesen
e3b8533e71 Cosmetic: lengthen names and improve comments. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98202 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-10 23:37:24 +00:00
Bill Wendling
cebae36f57 Add a bit along with the MCSymbols stored in the MachineModuleInfo maps that 
indicates that an MCSymbol is external or not. (It's true if it's external.)
This will be used to specify the correct information to add to non-lazy
pointers. That will be explained further when this bit is used.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98199 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-10 22:34:10 +00:00
Dale Johannesen
bfdf7f3852 Progress towards shepherding debug info through SelectionDAG. 
No functional effect yet.  This is still evolving and should
not be viewed as final.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98195 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-10 22:13:47 +00:00
Dan Gohman
8f78e3c87d Fix another bitwidth calculation to handle vector types; based on a 
patch by Micah Villmow for PR6572.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98188 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-10 21:04:53 +00:00
Dale Johannesen
2cd9ffef6e Fix another place where DEBUG_VALUE affected codegen. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98181 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-10 19:57:56 +00:00
Dale Johannesen
a2f767b1a7 Fix a bug in DEBUG_VALUE handling Devang ran into. 
I'll get this loop right yet.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98155 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-10 15:06:26 +00:00
Chris Lattner
09d53fecfc move three lowering hooks from MAI to TLOF and make one of them 
semantic instead of syntactic.  This completes MCization of
darwin/x86[-64]!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98145 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-10 07:20:42 +00:00
Dale Johannesen
c5cf227f3d This survived a bootstrap, so let's try 98104 again. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98137 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-10 05:45:47 +00:00
Evan Cheng
fac4f1f181 Enable machine cse pass. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98132 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-10 03:07:41 +00:00
Chris Lattner
974c0fb404 mcize the rest of EH emission, only one more directive missing 
for darwin/x86 to be completely mcized.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98130 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-10 02:48:06 +00:00
Chris Lattner
49f618a1e4 add missing filename! 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98125 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-10 02:29:31 +00:00
Chris Lattner
98cdab53c3 set the temporary bit on MCSymbols correctly. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98124 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-10 02:25:11 +00:00
Evan Cheng
2938a00f29 Add a couple more heuristics to neuter machine cse some more. 
1. Be careful with cse "cheap" expressions. e.g. constant materialization. Only cse them when the common expression is local or in a direct predecessor. We don't want cse of cheap instruction causing other expressions to be spilled.
2. Watch out for the case where the expression doesn't itself uses a virtual register. e.g. lea of frame object. If the common expression itself is used by copies (common for passing addresses to function calls), don't perform the cse. Since these expressions do not use a register, it creates a live range but doesn't close any, we want to be very careful with increasing register pressure.

Note these are heuristics so machine cse doesn't make register allocator unhappy. Once we have proper live range splitting and re-materialization support in place, these should be evaluated again.

Now machine cse is almost always a win on llvm nightly tests on x86 and x86_64.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98121 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-10 02:12:03 +00:00
Chris Lattner
d85fc6e0b1 inline away a form of IsPCRelative, eliminating the 
dead IsPCRel argument.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98117 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-10 01:17:49 +00:00
Chris Lattner
188a87da79 add some fixme's for MCizing. EH still has a few things that 
need to be MCized, but the last debug info thing are LEB and
cygwin specific (which the MC api doesn't support yet) and
one specific form of EmitReference which I'll tackle next.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98116 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-10 01:04:13 +00:00
Jim Grosbach
7c617b5e53 Clear up the last (famous last words) frame index value reuse issues for Thumb1. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98109 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-10 00:13:42 +00:00
Dale Johannesen
7dda453410 Speculatively revert 98104; could be what's causing crashes 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98108 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-10 00:11:34 +00:00
Chris Lattner
90e4af7b9d mcize uses of PrintRelDirective and eliminate it. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98107 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-10 00:09:21 +00:00
Chris Lattner
4aeaca4053 inline the bool form of PrintRelDirective away, leaving just the unsigned form. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98106 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-09 23:54:52 +00:00
Chris Lattner
233f52be36 eliminate EOL, adding all comments with the OutStreamer.AddComment 
method.  With this, comments should end up on the same lines as the .byte
directives (for example) and we now get no output with:

$ llc CodeGen/X86/2009-02-12-DebugInfoVLA.ll -o - -filetype=null -asm-verbose

woot.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98105 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-09 23:52:58 +00:00
Dale Johannesen
7f876967c0 Ever more complicated DEBUG_VALUE fixes for branch folding. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98104 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-09 23:52:37 +00:00
Chris Lattner
0d9d70f013 eliminate a bunch of \n's that are being printed to O. Next up is to kill 
off "EOL".


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98102 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-09 23:38:23 +00:00
Chris Lattner
fcdae492ea convert the non-"ispcrel" case of EmitReference to MC, 
significant debug info testcases are now all going through
MCStreamer, though they print a lot of extraneous newlines to "O".


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98101 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-09 23:19:15 +00:00
Jim Grosbach
dff4b4c5a7 Change the Value argument to eliminateFrameIndex to a type-tagged value. This 
is preparatory to having PEI's scavenged frame index value reuse logic
properly distinguish types of frame values (e.g., whether the value is
stack-pointer relative or frame-pointer relative).

No functionality change.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98086 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-09 21:45:49 +00:00
Evan Cheng
bfc9999563 Allow more cross-rc coalescing. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98048 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-09 06:38:17 +00:00
Chris Lattner
c608784dc8 reapply r98035: 
Now that setStartLabel takes an MCSymbol, we can de-ID'ize
beginScope and RecordSourceLine.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98047 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-09 04:54:43 +00:00
Chris Lattner
6c7dfc0463 add some extra checks. I'm not sure why, but this does unbreak a 
failure remaining on mainline.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98046 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-09 04:48:35 +00:00
Evan Cheng
7ef1840d9e Revert accidental commit. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98045 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-09 04:04:38 +00:00
Jakob Stoklund Olesen
1552cccc76 Don't do illegal cross-class coalescing. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98044 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-09 03:56:06 +00:00
Evan Cheng
31f94c7c22 - Make the machine cse dumb coalescer (as opposed to the more awesome simple 
coalescer) handle sub-register classes.
- Add heuristics to avoid non-profitable cse. Given the current lack of live
  range splitting, avoid cse when an expression has PHI use and the would be
  new use is in a BB where the expression wasn't already being used.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98043 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-09 03:21:12 +00:00
Eric Christopher
ee6414cf04 Speculatively revert r98035. It appears to have caused a set of buildbot 
failures.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98039 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-09 02:36:31 +00:00
Dan Gohman
19b3826d0f Attempt to make this debug output meaningful, both in the case of 
multibyte opcodes and in the case of multiple scopes.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98036 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-09 02:15:05 +00:00
Chris Lattner
1e233f510c Now that setStartLabel takes an MCSymbol, we can de-ID'ize 
beginScope and RecordSourceLine.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98035 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-09 02:08:02 +00:00
Chris Lattner
b7db733482 change DbgScope to keep track of the start/end label as MCSymbol* 
now that the dependence on ID is removed from MMI.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98034 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-09 01:58:53 +00:00
Chris Lattner
5b9062cb3a remove a useless optimization: now that label replacement never 
happens, the start/end of a scope can never be the same.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98032 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-09 01:52:43 +00:00
Chris Lattner
a34ec2290f strength reduce MMI::MappedLabel to MMI::isLabelDeleted, 
and add a FIXME about how we are eventually going to zap this
lookup table once mc world domination is complete.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98031 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-09 01:51:43 +00:00
Chris Lattner
b2cc1a39f7 mcstreamerize AsmPrinter::printLabel. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98025 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-09 01:02:30 +00:00
Jakob Stoklund Olesen
35071a0847 Disable physical register coalescing when the number of live ranges for the 
physreg becomes ridiculously high.

std::upper_bound may be log(N), but for sufficiently large live intervals, it
becomes log(N)*cachemiss = a long long time.

This patch improves coalescer time by 4500x for a function with 20000
function calls. The generated code is different, but not significantly worse -
the allocator hints are almost as good as physreg coalescing anyway.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98023 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-09 00:59:48 +00:00
Chris Lattner
6cde3e6e99 add a EmitSymbolValue convenience method to MCStreamer. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98017 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-09 00:39:24 +00:00
Chris Lattner
6ed0f90dac make InlineInfoLabels hold MCSymbol*'s, avoiding 
recomputation of the labels.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98016 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-09 00:31:02 +00:00
Chris Lattner
b9dc5f7b58 mc'ize the last use of PrintLabelName and eliminate PrintLabelName. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98015 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-09 00:26:09 +00:00
Chris Lattner
ef6b14f51c eliminate an argument from PrintRelDirective, sinking 
the one special case into EmitSectionOffset.  MCize
the non-special case in EmitSectionOffset.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98014 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-09 00:17:58 +00:00
Dan Gohman
8f03d75161 Print the correct index in the "match failed at index" message. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98013 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-09 00:07:36 +00:00
Chris Lattner
b67d69df65 remove the suffix form of PrintLabelName, which was only 
used for 'flavor'.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98012 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-09 00:00:57 +00:00
Chris Lattner
c3421bb805 now that the debug and eh emitters use a common .set counter, 
we can eliminate "flavor".


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98011 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-09 00:00:15 +00:00
Chris Lattner
0d50c7620d move .set generation out of DwarfPrinter into AsmPrinter and 
MCize it.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98010 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-08 23:58:37 +00:00
Evan Cheng
5196018d9c Don't waste time trying to CSE labels, phis, inline asm. Definitely avoid cse implicit-def for obvious performance reason. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98009 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-08 23:49:12 +00:00
Evan Cheng
6c3b8ac6c9 Restrict machine cse to really trivial coalescing. Leave the heavy lifting to a real coalescer. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98007 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-08 23:28:08 +00:00
Chris Lattner
57578766aa simplify EmitSectionOffset to always use .set if it is 
available, the only thing this affects is that we produce
.set in one case we didn't before, which shouldn't harm
anything.  Make EmitSectionOffset call EmitDifference
instead of duplicating it.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98005 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-08 23:23:25 +00:00
Chris Lattner
effa868d38 Remove a version of EmitDifference. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98002 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-08 23:02:59 +00:00
Chris Lattner
dd8187a3e9 eliminate a form of PrintLabelName. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97999 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-08 22:52:49 +00:00
Chris Lattner
326861c4c8 remove another form of EmitReference. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97998 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-08 22:50:36 +00:00
Chris Lattner
c7249da2e9 eliminate the non-MCSymbol versions of EmitReference. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97997 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-08 22:47:57 +00:00
Chris Lattner
f829eef8fa mc'ize EmitLabel. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97996 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-08 22:44:40 +00:00
Chris Lattner
4faf59af82 merge DIEObjectLabel and DIEDwarfLabel into DIELabel. 
Yes, DIE you fiendish labels, die all of you.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97995 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-08 22:31:46 +00:00
Chris Lattner
b98b1bf432 elimiante the DWLabel class, using MCSymbol instead. Start 
switching some stuff over to passing around MCSymbol* instead
of stem+ID.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97993 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-08 22:23:36 +00:00
Devang Patel
77bf295dbb Derive DIType from DIScope. This simplifies getContext() where for members the context is a type. This also eliminates need of CompileUnitMaps maintained by dwarf writer. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97990 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-08 22:02:50 +00:00
Devang Patel
3c91b05d2b Avoid using DIDescriptor.isNull(). 
This is a first step towards eliminating checks in Descriptor constructors.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97975 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-08 20:52:55 +00:00
Devang Patel
0ef3fa6aab Revert r97947. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97963 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-08 19:20:38 +00:00
Devang Patel
d8cc5d5256 Avoid using DIDescriptor.isNull(). 
This is a first step towards eliminating unncessary constructor checks in light weight DIDescriptor wrappers.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97947 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-08 18:25:48 +00:00
Dale Johannesen
fab4a25d46 Add Order to SDDbgValue 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97939 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-08 05:39:50 +00:00
Dale Johannesen
84839daa59 Fix dbg value handling in tail merging. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97938 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-08 05:38:13 +00:00
Douglas Gregor
1ddcf35b68 Revert r97917, which was causing Clang Debug self-host failures. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97932 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-08 02:58:37 +00:00
Jeffrey Yasskin
9467f0e3bd Roll r97906 forward again, without double-deleting CompileUnit::IndexTyDie. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97917 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-07 17:10:13 +00:00
Chris Lattner
acee647b13 Use Other as a sentinel instead of iAny. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97914 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-07 07:45:08 +00:00
Jeffrey Yasskin
8c42ca9374 _2_ gcc crashes, ah, ah, ah... 
(Rolling back r97906.)


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97909 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-07 07:16:49 +00:00
Jeffrey Yasskin
f7399bf929 Avoid leaking CompileUnits and DbgScopes from DwarfDebug. Leaks found by Valgrind! 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97906 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-07 06:55:35 +00:00
Chris Lattner
98f15d27cd tidy up 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97895 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-07 04:28:09 +00:00
Evan Cheng
6cc1aeaad2 Don't update physical register def. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97861 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-06 01:14:19 +00:00
Dale Johannesen
06a26637da Add some new bits of debug info handling. No 
functional change yet.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97855 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-06 00:03:23 +00:00
Dan Gohman
0fa9d1d901 Reapply r97778 and r97779, enabled only for unsigned i64 to f64 
conversions.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97854 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-06 00:00:55 +00:00
Charles Davis
314fef6127 Don't emit global symbols into the (__TEXT,__ustring) section on Darwin. This 
is a workaround for <rdar://problem/7672401/> (which I filed).

This let's us build Wine on Darwin, and it gets the Qt build there a little bit
further (so Doug says).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97845 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-05 22:28:45 +00:00
Jakob Stoklund Olesen
53e000bac3 Better handling of dead super registers in LiveVariables. We used to do this: 
CALL ... %RAX<imp-def>
   ... [not using %RAX]
   %EAX = ..., %RAX<imp-use, kill>
   RET %EAX<imp-use,kill>

Now we do this:

   CALL ... %RAX<imp-def, dead>
   ... [not using %RAX]
   %EAX = ...
   RET %EAX<imp-use,kill>

By not artificially keeping %RAX alive, we lower register pressure a bit.

The correct number of instructions for 2008-08-05-SpillerBug.ll is obviously
55, anybody can see that. Sheesh.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97838 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-05 21:49:17 +00:00
Jakob Stoklund Olesen
a76e816844 We don't really care about correct register liveness information after the 
post-ra scheduler has run. Disable the verifier checks that late in the game.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97837 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-05 21:49:13 +00:00
Jakob Stoklund Olesen
580bba2b0d Avoid creating bad PHI instructions when BR is being const-folded. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97836 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-05 21:49:10 +00:00
Chris Lattner
18fdabadca Fix PR6497, a bug where we'd fold a load into an addc 
node which has a flag.  That flag in turn was used by an
already-selected adde which turned into an ADC32ri8 which
used a selected load which was chained to the load we
folded.  This flag use caused us to form a cycle.  Fix
this by not ignoring chains in IsLegalToFold even in
cases where the isel thinks it can.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97791 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-05 06:19:13 +00:00
Chris Lattner
9bbcd5ee5b inline a small function with one call site. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97789 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-05 05:49:45 +00:00
Dan Gohman
b6b343d77a Revert r97778 and r97779. They're somehow breaking llvm-gcc builds. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97781 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-05 02:40:23 +00:00
Dan Gohman
808ab341b4 Fix these constants to be more portable. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97779 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-05 02:13:10 +00:00
Dan Gohman
cfa7ca1997 Rewrite i64-to-f64 conversion using an algorithm which handles 
rounding correctly. This implementation is a generalization of
the x86_64 code in compiler-rt.

This fixes rdar://7683708.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97778 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-05 02:00:46 +00:00
Dale Johannesen
b0812f114b Fix some more places where dbg_value affected codegen. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97765 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-05 00:02:59 +00:00
Jeffrey Yasskin
e8cfa63e4e Fix memcheck-found leaks: one false positive from using new[], and one true 
positive where pointers would be leaked on llvm_shutdown.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97759 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-04 22:15:01 +00:00
Jim Grosbach
b58a59b3c1 For SJLJ exception handling, make sure that all calls that are not marked 
as nounwind are marked with a -1 call-site value. This is necessary to, for
example, correctly process exceptions thrown from within an "unexpected"
execption handler (see SingleSource/Regression/C++/EH/expection_spec_test.cpp).



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97757 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-04 22:07:46 +00:00
Evan Cheng
c46e293e94 Run machine licm before machine cse to avoid messing up licm opportunities. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97752 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-04 21:28:09 +00:00
Evan Cheng
a5f32cb3d3 Avoid cse load instructions unless they are known to be invariant loads. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97747 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-04 21:18:08 +00:00
Chris Lattner
c19ae9d91d add a statistic for # times fastisel fails. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97738 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-04 19:46:56 +00:00
Dan Gohman
ba72b0c4e1 Fix a typo Duncan noticed. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97735 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-04 19:11:28 +00:00
Evan Cheng
9763f709e2 Rename -machine-cse to -enable-machine-cse. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97713 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-04 02:08:04 +00:00
Evan Cheng
b3958e8032 Look ahead a bit to determine if a physical register def that is not marked dead is really alive. This is necessary to catch a lot of common cse opportunities for targets like x86. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97706 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-04 01:33:55 +00:00
Chris Lattner
57bf8a483e change the new isel matcher to emit ComplexPattern matches 
as the very last thing before node emission.  This should
dramatically reduce the number of times we do 'MatchAddress'
on X86, speeding up compile time.  This also improves comments
in the tables and shrinks the table a bit, now down to 
80506 bytes for x86.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97703 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-04 01:23:08 +00:00
Dan Gohman
6900a39d28 Fix more code to work properly with vector operands. Based on 
a patch my Micah Villmow for PR6465.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97692 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-04 00:23:16 +00:00
Chris Lattner
2c4afd1d8e inline CannotYetSelectIntrinsic into CannotYetSelect and simplify. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97690 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-04 00:21:16 +00:00
Evan Cheng
67bda7215b Fix a logic error. An instruction that has a live physical register def cannot be CSE'ed, but it *can* be used to replace a common subexpression. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97688 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-03 23:59:08 +00:00
Evan Cheng
a92dced4a1 Remove PHINodeTraits and use MachineInstrExpressionTrait instead. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97687 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-03 23:55:49 +00:00
Evan Cheng
67eaa08f2b Move MachineInstrExpressionTrait::getHashValue() out of line so it can skip over only virtual register defs. This matches what isEqual() is doing. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97680 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-03 23:37:30 +00:00
Evan Cheng
05bdcbb1ae Re-apply r97667 but with a little bit of thought put into the patch. This implements a special DenseMapInfo trait for DenseMap<MachineInstr*> that compare the value of the MachineInstr rather than the pointer value. Since the hashing and equality test functions ignore defs it's useful for doing CSE kind optimization. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97678 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-03 23:27:36 +00:00
Dan Gohman
319dfa3fb3 Revert 97667. It broke a bunch of tests. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97673 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-03 22:40:03 +00:00
Evan Cheng
34cdf6edf5 Fix funky indentation and add comments. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97670 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-03 21:54:14 +00:00
Evan Cheng
a054ae02fd Move DenseMapInfo for MachineInstr* to MachineInstr.h 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97667 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-03 21:47:16 +00:00
Dan Gohman
a72d2a210c Fix a bug in SelectionDAG's ReplaceAllUsesWith in the case where 
CSE and recursive RAUW calls delete a node from the use list,
invalidating the use list iterator. There's currently no known
way to reproduce this in an unmodified LLVM, however there's no
fundamental reason why a SelectionDAG couldn't be formed which
would trigger this case.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97665 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-03 21:33:37 +00:00
Evan Cheng
16b48b8a05 Machine CSE work in progress. It's doing some CSE now. But implicit def of physical registers are getting in the way. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97664 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-03 21:20:05 +00:00
Evan Cheng
1423c70b8f Add MachineRegisterInfo::hasOneUse and hasOneNonDBGUse. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97663 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-03 21:18:38 +00:00
Bill Wendling
fec8657351 Revert... 
--- Reverse-merging r97592 into '.':
U    lib/CodeGen/TargetLoweringObjectFileImpl.cpp



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97657 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-03 19:31:05 +00:00
Chris Lattner
da828e3c8c add some of the more obscure predicate types to the 
Scope accelerator.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97652 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-03 07:46:25 +00:00
Chris Lattner
f1b7c7d476 speed up scope node processing: if the first element of a scope 
entry we're about to process is obviously going to fail, don't
bother pushing a scope only to have it immediately be popped.
This avoids a lot of scope stack traffic in common cases.

Unfortunately, this requires duplicating some of the predicate
dispatch.  To avoid duplicating the actual logic I pulled each
predicate out to its own static function which gets used in
both places.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97651 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-03 07:31:15 +00:00
Chris Lattner
cfe2eab744 introduce a new SwitchTypeMatcher node (which is analogous to 
SwitchOpcodeMatcher) and have DAGISelMatcherOpt form it.  This
speeds up selection, particularly for X86 which has lots of 
variants of instructions with only type differences.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97645 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-03 06:28:15 +00:00
Evan Cheng
6ba9554988 Work in progress. Finding some cse now. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97635 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-03 02:48:20 +00:00
Bill Wendling
32f9eb2bc3 Use APInt instead of zext value. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97631 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-03 01:58:01 +00:00
Evan Cheng
506049f29f - Change MachineInstr::isIdenticalTo to take a new option that determines whether it should skip checking defs or at least virtual register defs. This subsumes part of the TargetInstrInfo::isIdentical functionality. 
- Eliminate TargetInstrInfo::isIdentical and replace it with produceSameValue. In the default case, produceSameValue just checks whether two machine instructions are identical (except for virtual register defs). But targets may override it to check for unusual cases (e.g. ARM pic loads from constant pools).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97628 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-03 01:44:33 +00:00
Evan Cheng
d89347cb49 Add an option to enable machine cse (it's not doing anything yet. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97627 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-03 01:38:35 +00:00
Bill Wendling
7d9f2b93a3 This test case: 
long test(long x) { return (x & 123124) | 3; }

Currently compiles to:

_test:
        orl     $3, %edi
        movq    %rdi, %rax
        andq    $123127, %rax
        ret

This is because instruction and DAG combiners canonicalize

  (or (and x, C), D) -> (and (or, D), (C | D))

However, this is only profitable if (C & D) != 0. It gets in the way of the
3-addressification because the input bits are known to be zero.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97616 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-03 00:35:56 +00:00
Chris Lattner
d1b7382983 Fix some issues in WalkChainUsers dealing with 
CopyToReg/CopyFromReg/INLINEASM.  These are annoying because
they have the same opcode before an after isel.  Fix this by
setting their NodeID to -1 to indicate that they are selected,
just like what automatically happens when selecting things that
end up being machine nodes.

With that done, give IsLegalToFold a new flag that causes it to
ignore chains.  This lets the HandleMergeInputChains routine be
the one place that validates chains after a match is successful,
enabling the new hotness in chain processing.  This smarter
chain processing eliminates the need for "PreprocessRMW" in the
X86 and MSP430 backends and enables MSP to start matching it's
multiple mem operand instructions more aggressively.

I currently #if out the dead code in the X86 backend and MSP 
backend, I'll remove it for real in a follow-on patch.

The testcase changes are:
  test/CodeGen/X86/sse3.ll: we generate better code
  test/CodeGen/X86/store_op_load_fold2.ll: PreprocessRMW was 
      miscompiling this before, we now generate correct code
      Convert it to filecheck while I'm at it.
  test/CodeGen/MSP430/Inst16mm.ll: Add a testcase for mem/mem
      folding to make anton happy. :)




git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97596 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-02 22:20:06 +00:00
Bill Wendling
d556155afd Okay. One last attempt: 
Place the LSDA into the TEXT section on Mach-O. This saves space.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97592 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-02 21:50:35 +00:00