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Author SHA1 Message Date
Dan Gohman
5d11ea39f7 Don't pass SDValues by non-const reference unless they may be 
modified.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102816 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-01 00:33:16 +00:00
Dan Gohman
95140a4cc1 Reorgnaize more switch code lowering to clean up some tricky 
code, and to eliminate the need for the SelectionDAGBuilder
state to be live during CodeGenAndEmitDAG calls.

Call SDB->clear() before CodeGenAndEmitDAG calls instead of
before it, and move the CurDAG->clear() out of SelectionDAGBuilder,
which doesn't own the DAG, and into CodeGenAndEmitDAG.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102814 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-01 00:25:44 +00:00
Dan Gohman
1b40319eba Delete the EdgeMapping variable itself. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102810 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-01 00:02:20 +00:00
Dan Gohman
af1d8ca44a Get rid of the EdgeMapping map. Instead, just check for BasicBlock 
changes before doing phi lowering for switches.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102809 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-01 00:01:06 +00:00
Dan Gohman
acbfc157d2 Fix a typo. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102799 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-30 22:38:11 +00:00
Chris Lattner
4b7b42c831 Dan recently disabled recursive inlining within a function, but we 
were still inlining self-recursive functions into other functions.

Inlining a recursive function into itself has the potential to
reduce recursion depth by a factor of 2, inlining a recursive
function into something else reduces recursion depth by exactly 
1.  Since inlining a recursive function into something else is a
weird form of loop peeling, turn this off.

The deleted testcase was added by Dale in r62107, since then
we're leaning towards not inlining recursive stuff ever.  In any
case, if we like inlining recursive stuff, it should be done 
within the recursive function itself to get the algorithm 
recursion depth win.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102798 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-30 22:37:22 +00:00
Bill Wendling
d71bb56275 EXTRACT_VECTOR_ELT of an INSERT_VECTOR_ELT may have the same index, but the 
indexes could be of a different value type. Or not even using the same SDNode
for the constant (weird, I know). Compare the actual values instead of the
pointers.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102791 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-30 22:19:17 +00:00
Dan Gohman
e7fd7c6886 Remove this debug output. The MachineFunction will be printed once all of 
instruction selection is done; it's confusing to see parts of it printed,
while other parts are omitted, along the way.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102771 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-30 21:21:21 +00:00
Jakob Stoklund Olesen
8387d7db19 The local register allocator has to spill dirty callee saved registers before a 
call that might throw. The landing pad assumes that all registers are in stack
slots.

We used to spill those dirty CSRs after the call, and the stack slots would be
wrong when arriving at the landing pad.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102770 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-30 21:19:29 +00:00
Devang Patel
0aa885d3ab Preserve debug info attached with call instruction while eliminating dead argument. 
Radar 7927803


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102760 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-30 20:23:54 +00:00
Dan Gohman
3335a22a37 Make this code less confusing. Instead of reassigning BB, just operate 
on the original variables, so it's easier to see what is being done
to which blocks.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102759 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-30 20:14:26 +00:00
Devang Patel
ccff812777 Attach AT_APPLE_optimized attribute to optimized function's debug info. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102743 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-30 19:38:23 +00:00
Dan Gohman
891ff8fbd6 EmitDbgValue doesn't need its EdgeMapping argument. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102742 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-30 19:35:33 +00:00
Dan Gohman
8833c32108 Set isSigned to true when creating an all-ones integer constant, even 
for unsigned purposes, so >64-bit integer values get a full all-ones
value.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102739 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-30 19:22:39 +00:00
Dan Gohman
b6fd0b481c Silence compiler warnings. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102734 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-30 19:21:13 +00:00
Dan Gohman
5b61b3818a Add lint checks for invalid uses of memory. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102733 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-30 19:05:00 +00:00
Dan Gohman
71edb241a1 Remove the -disable-16bit command-line option, which is now obsolete. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102730 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-30 18:30:26 +00:00
Jakob Stoklund Olesen
132dace4aa Don't use floating point in SimpleRegisterCoalescing. 
Rounding differences causes tests to fail on Linux.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102729 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-30 18:28:11 +00:00
Dan Gohman
3ce89f47de Apply a patch from Jan Sjodin to fix a compiler abort on vector 
comparisons sign-extended to a different bitwidth than the
comparison operands.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102721 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-30 17:19:19 +00:00
Evan Cheng
1361796dd0 Another sibcall bug. If caller and callee calling conventions differ, then it's only safe to do a tail call if the results are returned in the same way. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102683 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-30 01:12:32 +00:00
Dan Gohman
71cee76d26 Temporarily disable SelectionDAG kill flags, which are causing trouble. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102680 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-30 00:32:51 +00:00
Jeffrey Yasskin
8c818fc35c Fix the OProfileJITEventListener build after r101844 removed 
MachineFunction::DefaultDebugLoc.  We now use the same technique as
DwarfDebug::beginFunction to find the starting line number for a
function.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102679 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-30 00:16:10 +00:00
Dan Gohman
47bd03b277 Set register kill flags on the SelectionDAG path, at least in the 
easy cases.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102678 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-30 00:08:21 +00:00
Jakob Stoklund Olesen
f07fc974d3 Reject really weird coalescer case when trying to merge identical subregisters 
of different register classes. e.g.

  %reg1048:3<def> = EXTRACT_SUBREG %RAX<kill>, 3

Where %reg1048 is a GR32 register. This is not impossible to handle, but it is
pretty hard and very rare.

This should unbreak the dragonegg builder.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102672 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-29 23:47:46 +00:00
Dan Gohman
ffce6f1343 Don't leave Base.FrameIndex uninitialized, so that it doesn't 
print randomly in debug output.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102668 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-29 23:30:41 +00:00
Dan Gohman
a555ac9d15 Fix typos in assertion strings. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102666 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-29 23:25:34 +00:00
Jakob Stoklund Olesen
02104df05f Slightly verboser debug spew from coalescer 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102663 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-29 22:21:48 +00:00
Devang Patel
719f6a9d9c Refactor. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102661 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-29 20:40:36 +00:00
Dale Johannesen
8c5358c936 Make naked functions work on PPC. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102657 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-29 19:32:19 +00:00
Devang Patel
67a444ca36 Print variable scope name in DEBUG_VALUE comment. Useful in some cases. e.g. 
##DEBUG_VALUE: runOnMachineFunction:this <- RDI+0
	##DEBUG_VALUE: runOnMachineFunction:fn <- RSI+0
	##DEBUG_VALUE: DeadDefs <- undef ## SimpleRegisterCoalescing.cpp:2706
	##DEBUG_VALUE: getRegInfo:this <- [%rsp+$56]+$0
	##DEBUG_VALUE: getTarget:this <- [%rsp+$56]+$0



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102655 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-29 18:52:10 +00:00
Evan Cheng
bd6cb4ba1f Remove DBG_VALUE which reference dead stack slots. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102654 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-29 18:51:00 +00:00
Devang Patel
a83ce98d5f DO not push DBG_VALUE machine instructions for inlined fuction arguments in entry block. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102653 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-29 18:50:36 +00:00
Duncan Sands
e704d9d89c Verify metadata harder. In particular, check that module 
level metadata does not have any function local operands.
This would have caught the problem found in PR6112.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102620 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-29 16:10:30 +00:00
Evan Cheng
8fed76115e Add comment. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102606 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-29 06:58:53 +00:00
Evan Cheng
a36acad67d Re-enable 102565 with fixes. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102602 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-29 06:33:38 +00:00
Evan Cheng
3f54c64a98 Load folding tail call should not use ebp / rbp after it's popped. PEI 
should use esp / rsp to reference frame instead.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102596 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-29 05:08:22 +00:00
Mon P Wang
b9a01bcf48 Add support for assemblers that don't support periods in a name 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102594 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-29 04:00:56 +00:00
Evan Cheng
16e4ace951 Temporarily disable my changes to unbreak the build. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102590 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-29 03:34:19 +00:00
Evan Cheng
9e8a2b9346 Do not generate duplicate dbg_value instructions for function arguments. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102585 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-29 01:40:30 +00:00
Dan Gohman
c924556dd5 Fix missing #include. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102584 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-29 01:39:13 +00:00
Evan Cheng
ee1d91a830 Avoid emitting a dbg_value machineinstr that's not going to be inserted into entry block. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102581 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-29 01:23:55 +00:00
Evan Cheng
8601a3d4de Frame index can be negative. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102577 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-29 01:13:30 +00:00
Evan Cheng
1deef27b0a Check Reg against zero. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102573 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-29 00:59:34 +00:00
Evan Cheng
6691a8935c - Really preserve dbg_value instructions when the register is spilled. 
- Also, update dbg_value is the value is being re-matted from a frame slot, e.g. fixed slots for arguments.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102565 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-28 23:52:26 +00:00
Devang Patel
f38c6c89f1 tidy up. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102558 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-28 23:24:13 +00:00
Kevin Enderby
9ac7282117 Fixed the word sized Bit Scan Forward/Reverse instructions, they needed the 
Operand size override prefix to be part of their records.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102556 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-28 23:20:40 +00:00
Evan Cheng
2ad0fcf794 Replace r102368 with code that's less fragile. This creates DBG_VALUE instructions for function arguments early and insert them after instruction selection is done. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102554 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-28 23:08:54 +00:00
Jim Grosbach
d100755bab Add sizes non-floating point versions for the eh sjlj intrinsic expansions. 
rdar://7895451



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102526 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-28 20:33:09 +00:00
Chris Lattner
f3f325b82f fix PR6112 - When globalopt (or any other pass) does RAUW(@G, %G), 
metadata references in non-function-local MDNodes should drop to 
null.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102519 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-28 20:16:12 +00:00
Evan Cheng
59b3655564 Pretty print DBG_VALUE machine instructions. 
Before:
DBG_VALUE %RSI, 0, !-1; dbg:SimpleRegisterCoalescing.cpp:2707
Now:
DBG_VALUE %RSI, 0, !"this"; dbg:SimpleRegisterCoalescing.cpp:2707


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102518 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-28 20:03:13 +00:00
Chris Lattner
e87f7bb50e Rework global alignment computation again. Now we do round up 
alignment of globals to the preferred alignment, but only when
there is no section specified on the global (by far the common
case).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102515 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-28 19:58:07 +00:00
Devang Patel
54fc4d6a48 While lowering dbg_declare, emit DBG_VALUE machine instruction if alloca matching llvm.dbg.declare intrinsic is missing. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102513 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-28 19:27:33 +00:00
Jakob Stoklund Olesen
0fd109963a Recompute kill flags from live intervals after coalescing instead of trying to 
update them. Computing kill flags is notoriously difficult, and the coalescer
would get it wrong sometimes, and it would completely skip physical registers.

Now we simply remove kill flags based on the live intervals after coalescing.
This is a few percent slower, but now we get correct kill flags for physical
registers after coalescing.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102510 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-28 18:28:39 +00:00
Jakob Stoklund Olesen
7261fb2a6f Teach X86FloatingPoint that a register can be killed multiple times by the same 
instruction.

This instruction would crash the pass:

  INLINEASM <es:foo $0 $1>, 9, %FP0<kill>, 9, %FP0<kill>, 14, %EFLAGS<earlyclobber,def,dead>

Now it doesn't.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102509 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-28 18:28:37 +00:00
Evan Cheng
2bce5f4b56 Enable i16 to i32 promotion by default. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102493 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-28 08:30:49 +00:00
Evan Cheng
b3a3d5e858 Try operation promotion only if regular dag combine and target-specific ones failed to do anything. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102492 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-28 07:10:39 +00:00
Evan Cheng
39cfeecae5 Unbreak the build. Only form shld / shrd after legalization. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102488 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-28 02:25:18 +00:00
Devang Patel
28ff35d030 Emit debug info for byval parameters. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102486 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-28 01:39:28 +00:00
Evan Cheng
8b1190a540 Rather than having a ton of patterns for double shift instructions, e.g. SHLD16rrCL, just perform custom dag combine to form x86 specific dag so they match to the same pattern. This also makes sure later dag combine do not cause isel to miss them (e.g. promoting i16 to i32). 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102485 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-28 01:18:01 +00:00
Chris Lattner
a7b611c10d further simplify EmitAlignment by eliminating the 
ForcedAlignBits argument, tweaking the single client of it.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102484 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-28 01:08:40 +00:00
Chris Lattner
755824756c remove a dead argument to EmitAlignment. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102483 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-28 01:06:02 +00:00
Chris Lattner
059ea138a6 remove some default arguments to EmitAlignment. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102482 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-28 01:05:45 +00:00
Devang Patel
a43098d388 Refactor. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102481 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-28 01:03:09 +00:00
Stuart Hastings
5a6a65be46 Tweak x86 INC/DEC generation to look for CopyToReg or SETCC. Radar 7866163. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102477 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-28 00:35:10 +00:00
Chris Lattner
2d4b8ee1d9 further clarify alignment of globals, fix instcombine 
to not increase the alignment of globals with an assigned
alignment and section.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102476 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-28 00:31:12 +00:00
Devang Patel
a00adba6a7 Use MachineOperand::is* predicates. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102472 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-27 22:24:37 +00:00
Devang Patel
97303ee27d Use isReg(), isImm() and isFPImm(). 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102470 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-27 22:04:41 +00:00
Devang Patel
dcde3db38e Check operand type first. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102468 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-27 21:49:04 +00:00
Evan Cheng
1c45acf510 Fix obvious typos. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102467 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-27 21:46:03 +00:00
Devang Patel
0f9d952542 Ignore DBG_VALUE instructions that points to undef values. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102463 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-27 20:54:45 +00:00
Evan Cheng
b3716e3e28 SRA promotion is also not free. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102456 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-27 19:48:31 +00:00
Evan Cheng
ac7eae5b89 - When legal, promote a load to zextload rather than ext load. 
- Catch more further dag combine opportunities as result of operand promotion, e.g. (i32 anyext (i16 trunc (i32 x))) -> (i32 x)


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102455 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-27 19:48:13 +00:00
Devang Patel
eac9c07fde Identify when a lexical scope is split in to multiple instruction ranges. Emit such ranges using DW_AT_ranges. 
This patch fixes bug (PR6894) introduced by previous version of this patch.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102454 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-27 19:46:33 +00:00
Evan Cheng
ed33b13a10 Do not count kill, implicit_def instructions as printed instructions. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102453 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-27 19:38:45 +00:00
Chris Lattner
4c4d0c0cc5 round zero-byte .zerofill directives up to 1 byte. This 
should fix some "g++.dg-struct-layout-1" failures, 
rdar://7886017


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102421 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-27 07:41:44 +00:00
Dale Johannesen
fc0b860bcc Revert a small part of 102372; this fixes at least one 
of the dbg testsuite regressions.  I don't think this is
really the right fix; this change exposed an existing problem
upstream somewhere.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102410 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-27 02:10:05 +00:00
Chris Lattner
c6f0aadc3b Fix a problem that lower invoke has with allocas (PR6694), and 
add a version of createLowerInvokePass that allows the client
to specify whether it wants "expensive" or "cheap" lowering.

Patch by Alex Mac!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102402 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-26 23:49:32 +00:00
Chris Lattner
d61647d306 add a comment in verbose-asm mode indicating why a noop is being generated. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102401 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-26 23:41:43 +00:00
Chris Lattner
ee9eb411ff on darwin empty functions need to codegen into something of non-zero length, 
otherwise labels get incorrectly merged.  We handled this by emitting a 
".byte 0", but this isn't correct on thumb/arm targets where the text segment
needs to be a multiple of 2/4 bytes.  Handle this by emitting a noop.  This
is more gross than it should be because arm/ppc are not fully mc'ized yet.

This fixes rdar://7908505



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102400 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-26 23:37:21 +00:00
Bob Wilson
5dfa87ecc6 Handle register-to-register copies within the tGPR class. 
Radar 7896289


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102396 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-26 23:20:08 +00:00
Bob Wilson
cc7354e993 Avoid adding a null MD node operand, which crashes with "-debug" when trying 
to print the operand.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102395 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-26 22:56:56 +00:00
Devang Patel
5098da0a7e Use DW_AT_entry_pc instead of DW_AT_low_pc/DW_AT_high_pc pair. This simplifies debug range entries. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102394 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-26 22:54:28 +00:00
Dan Gohman
948c8a3e3d When checking whether the special handling for an addrec increment which 
doesn't dominate the header is needed, don't check whether the increment
expression has computable loop evolution. While the operands of an
addrec are required to be loop-invariant, they're not required to 
dominate any part of the loop. This fixes PR6914.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102389 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-26 21:46:36 +00:00
Dale Johannesen
925965e6ba Remove crufty comments. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102380 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-26 20:48:54 +00:00
Dale Johannesen
3f282aa94b Handle target-specific form of DBG_VALUE in AsmPrinter. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102373 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-26 20:07:31 +00:00
Dale Johannesen
fdb42fa5fe Add DBG_VALUE handling for byval parameters; this 
produces a comment on targets that support it, but
the Dwarf writer is not hooked up yet.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102372 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-26 20:06:49 +00:00
Dale Johannesen
efc3a6348a Add PPC AsmPrinter handling for target-specific form of 
DBG_VALUE, and a cautionary comment.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102371 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-26 20:05:01 +00:00
Evan Cheng
f48023b3cf Insert dbg_value instructions for function entry block liveins (i.e. function arguments). 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102368 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-26 19:16:00 +00:00
Evan Cheng
552f09a0d7 Promoting 16-bit cmp / test aren't free. Don't do it. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102366 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-26 19:06:11 +00:00
Chris Lattner
567dd1f5d0 fix PR6921 a different way. Intead of increasing the 
alignment of globals with a specified alignment, we fix
common variables to obey their alignment.  Add a comment
explaining why this behavior is important.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102365 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-26 18:46:46 +00:00
Evan Cheng
6fa7636e61 Re-enable 102323 with fix: do not update dbg_value's with incorrect frame indices when the live interval are being re-materialized. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102361 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-26 18:37:21 +00:00
Chris Lattner
f74e25f60c Revert r102300/102301, which serious broke objc apps. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102359 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-26 18:30:45 +00:00
Chris Lattner
8581c260d3 fix PR6940: sitofp(undef) folds to 0.0, not undef. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102358 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-26 18:21:23 +00:00
Bob Wilson
211678a0d7 Update MachineSSAUpdater with the same changes I made for the IR-level 
SSAUpdater.  I'm going to try to refactor this to share most of the code
between them.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102353 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-26 17:40:49 +00:00
Evan Cheng
6cd4b34261 Temporary disable spiller modifying dbg_value. It's breaking build. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102327 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-26 08:24:07 +00:00
Evan Cheng
fc4d530ad6 Remove a redundant comment. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102326 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-26 08:16:57 +00:00
Evan Cheng
0965217e74 Add PPC specific emitFrameIndexDebugValue. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102325 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-26 07:39:36 +00:00
Evan Cheng
62b50656ce Add ARM specific emitFrameIndexDebugValue. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102324 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-26 07:39:25 +00:00
Evan Cheng
962021bc7f - Move TargetLowering::EmitTargetCodeForFrameDebugValue to TargetInstrInfo and rename it to emitFrameIndexDebugValue. 
- Teach spiller to modify DBG_VALUE instructions to reference spill slots.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102323 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-26 07:38:55 +00:00
Dale Johannesen
f822e733af Stop abusing EmitInstrWithCustomInserter for target-dependent 
form of DEBUG_VALUE, as it doesn't have reasonable default
behavior for unsupported targets.  Add a new hook instead.
No functional change.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102320 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-25 21:33:54 +00:00