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46007b3712
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4275 Commits

Author SHA1 Message Date
Dan Gohman
46007b3712 Move isInTailCallPosition out of SelectionDAGBuilder, as it isn't 
SelectionDAG-specific.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101801 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-19 18:41:46 +00:00
Dan Gohman
3fb150a902 Fix -Wcast-qual warnings. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101655 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-17 17:42:52 +00:00
Dan Gohman
383b5f6b91 Delete now-unnecessary const_casts. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101637 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-17 15:32:28 +00:00
Dan Gohman
d858e90f03 Use const qualifiers with TargetLowering. This eliminates several 
const_casts, and it reinforces the design of the Target classes being
immutable.

SelectionDAGISel::IsLegalToFold is now a static member function, because
PIC16 uses it in an unconventional way. There is more room for API
cleanup here.

And PIC16's AsmPrinter no longer uses TargetLowering.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101635 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-17 15:26:15 +00:00
Evan Cheng
e5b51ac770 More work to allow dag combiner to promote 16-bit ops to 32-bit. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101621 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-17 06:13:15 +00:00
Evan Cheng
4ff28527bb Another 80 col violation. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101620 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-17 06:12:32 +00:00
Eric Christopher
551754c495 Revert 101465, it broke internal OpenGL testing. 
Probably the best way to know that all getOperand() calls have been handled
is to replace that API instead of updating.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101579 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-16 23:37:20 +00:00
Evan Cheng
003d7c4b5d (i32 sext_in_reg (i32 aext (i16 x)), i16) -> (i32 sext x). No known test case until -promote-16bit is enabled. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101551 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-16 22:26:19 +00:00
Dan Gohman
8c0e89925d Create a new TargetSelectionDAGInfo class. This will eventually acquire 
SelectionDAG-specific parts of TargetLowering.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101537 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-16 21:12:11 +00:00
Dan Gohman
4bcf0a9233 Commit this, which should have accompanied 101531. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101532 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-16 20:22:43 +00:00
Evan Cheng
53f6ed9560 80 col. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101501 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-16 17:58:41 +00:00
Evan Cheng
182465c589 80 col. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101500 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-16 17:57:59 +00:00
Dan Gohman
33b7a291aa Avoid creating virtual registers for unused values. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101480 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-16 17:15:02 +00:00
Dan Gohman
ac7d05c4bf Fix an assertion string. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101478 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-16 16:55:18 +00:00
Dan Gohman
a44e522b7d Fix a comment. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101477 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-16 16:52:37 +00:00
Gabor Greif
4ec2258ffb reapply r101434 
with a fix for self-hosting

rotate CallInst operands, i.e. move callee to the back
of the operand array

the motivation for this patch are laid out in my mail to llvm-commits:
more efficient access to operands and callee, faster callgraph-construction,
smaller compiler binary


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101465 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-16 15:33:14 +00:00
Evan Cheng
64b7bf71e8 Adding support for dag combiner to promote operations for profit. This requires target specific queries. For example, x86 should promote i16 to i32 when it does not impact load folding. 
x86 support is off by default. It can be enabled with -promote-16bit.

Work in progress.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101448 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-16 06:14:10 +00:00
Dan Gohman
f89d1dc9b7 Refine further the scope where the global DebugLoc value is active. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101443 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-16 05:06:56 +00:00
Gabor Greif
607a7ab3da back out r101423 and r101397, they break llvm-gcc self-host on darwin10 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101434 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-16 01:16:20 +00:00
Gabor Greif
2ff961f668 reapply r101364, which has been backed out in r101368 
with a fix

rotate CallInst operands, i.e. move callee to the back
of the operand array

the motivation for this patch are laid out in my mail to llvm-commits:
more efficient access to operands and callee, faster callgraph-construction,
smaller compiler binary


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101397 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-15 20:51:13 +00:00
Dan Gohman
b35798347e Fix a bunch of namespace polution. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101376 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-15 17:08:50 +00:00
Gabor Greif
9ee1720811 back out r101364, as it trips the linux nightlybot on some clang C++ tests 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101368 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-15 12:46:56 +00:00
Gabor Greif
165dac08d1 rotate CallInst operands, i.e. move callee to the back 
of the operand array

the motivation for this patch are laid out in my mail to llvm-commits:
more efficient access to operands and callee, faster callgraph-construction,
smaller compiler binary


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101364 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-15 10:49:53 +00:00
Chris Lattner
e6987587d6 enhance the load/store narrowing optimization to handle a 
tokenfactor in between the load/store.  This allows us to 
optimize test7 into:

_test7:                                 ## @test7
## BB#0:                                ## %entry
	movl	(%rdx), %eax
                                        ## kill: SIL<def> ESI<kill>
	movb	%sil, 5(%rdi)
	ret

instead of:

_test7:                                 ## @test7
## BB#0:                                ## %entry
	movl	4(%esp), %ecx
	movl	$-65281, %eax           ## imm = 0xFFFFFFFFFFFF00FF
	andl	4(%ecx), %eax
	movzbl	8(%esp), %edx
	shll	$8, %edx
	addl	%eax, %edx
	movl	12(%esp), %eax
	movl	(%eax), %eax
	movl	%edx, 4(%ecx)
	ret



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101355 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-15 06:10:49 +00:00
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
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