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Author SHA1 Message Date
Reid Kleckner 93acac6cfc Add the ExceptionHandling::MSVC enumeration 
It is intended to be used for a family of personality functions that
have similar IR preparation requirements. Typically when interoperating
with MSVC personality functions, bits of functionality need to be
outlined from the main function into helper functions. There is also
usually more than one landing pad per invoke, which does not match the
LLVM IR landingpad representation.

None of this is implemented yet. This change just adds a new enum that
is active for *-windows-msvc and delegates to the EH removal preparation
pass.  No functionality change for other targets.

llvm-svn: 224625
 2014-12-19 22:19:48 +00:00
Stephen Lin f799e3f944 Convert CodeGen/*/*.ll tests to use the new CHECK-LABEL for easier debugging. No functionality change and all tests pass after conversion. 
This was done with the following sed invocation to catch label lines demarking function boundaries:
    sed -i '' "s/^;\( *\)\([A-Z0-9_]*\):\( *\)test\([A-Za-z0-9_-]*\):\( *\)$/;\1\2-LABEL:\3test\4:\5/g" test/CodeGen/*/*.ll
which was written conservatively to avoid false positives rather than false negatives. I scanned through all the changes and everything looks correct.

llvm-svn: 186258
 2013-07-13 20:38:47 +00:00
Evan Cheng 822ddde50d Disable expensive two-address optimizations at -O0. rdar://10453055 
llvm-svn: 144806
 2011-11-16 18:44:48 +00:00
Bill Wendling d4e871404d Update more tests to the new EH scheme. 
llvm-svn: 138903
 2011-08-31 21:39:05 +00:00
Chris Lattner 5a2c70cc8f add missing colon, thanks peter. 
llvm-svn: 137306
 2011-08-11 16:15:10 +00:00
Chris Lattner 96710b4308 fix PR10605 / rdar://9930964 by adding a pretty scary missed check. 
It's somewhat surprising anything works without this.  Before we would
compile the testcase into:

test:                                   # @test
	movl	$4, 8(%rdi)
	movl	8(%rdi), %eax
	orl	%esi, %eax
	cmpl	$32, %edx
	movl	%eax, -4(%rsp)          # 4-byte Spill
	je	.LBB0_2

now we produce:

test:                                   # @test
	movl	8(%rdi), %eax
	movl	$4, 8(%rdi)
	orl	%esi, %eax
	cmpl	$32, %edx
	movl	%eax, -4(%rsp)          # 4-byte Spill
	je	.LBB0_2
llvm-svn: 137303
 2011-08-11 06:26:54 +00:00
Jakob Stoklund Olesen fb03a92c33 Be less aggressive about hinting in RAFast. 
In particular, don't spill dirty registers only to satisfy a hint. It is
not worth it.

The attached test case provides an example where the fast allocator
would spill a register when other registers are available.

llvm-svn: 132900
 2011-06-13 03:26:46 +00:00
Bill Wendling 410ec4aad1 As Dan pointed out, movzbl, movsbl, and friends are nicer than their alias 
(movzx/movsx) because they give more information. Revert that part of the patch.

llvm-svn: 129498
 2011-04-14 01:46:37 +00:00
Bill Wendling 7e07d6fb69 Have the X86 back-end emit the alias instead of what's being aliased. In most 
cases, it's much nicer and more informative reading the alias.

llvm-svn: 129497
 2011-04-14 01:11:51 +00:00
Dan Gohman c1783b31a4 Fix fast-isel address mode folding to avoid folding instructions 
outside of the current basic block. This fixes PR9500, rdar://9156159.

llvm-svn: 128041
 2011-03-22 00:04:35 +00:00
NAKAMURA Takumi eaf128bde6 Relax expressions and add explicit triplets -linux and -win32. 
llvm-svn: 126202
 2011-02-22 07:20:02 +00:00
Chris Lattner 2d186574a6 reapply my fix for PR8961 with a tweak to properly handle 
multi-instruction sequences like calls.  Many thanks to Jakob for
finding a testcase.

llvm-svn: 123559
 2011-01-16 02:27:38 +00:00
Chris Lattner e93e4f118c revert my fastisel patch again which apparently still gives the 
llvm-gcc-i386-linux-selfhost buildbot heartburn...

llvm-svn: 123431
 2011-01-14 06:14:33 +00:00
Chris Lattner 5ca1391003 reapply r123414 now that the botz are calmed down and the fix is already in. 
llvm-svn: 123427
 2011-01-14 04:24:28 +00:00
Chris Lattner 21a64979f1 r123414 broke llvm-gcc bootstrap apparently, revert 
llvm-svn: 123422
 2011-01-14 02:07:32 +00:00
Chris Lattner 0c34cb429e fix PR8961 - a fast isel miscompilation where we'd insert a new instruction 
after sext's generated for addressing that got folded.  Previously we compiled
test5 into:

_test5:                                 ## @test5
## BB#0:
        movq    -8(%rsp), %rax          ## 8-byte Reload
        movq    (%rdi,%rax), %rdi
        addq    %rdx, %rdi
        movslq  %esi, %rax
        movq    %rax, -8(%rsp)          ## 8-byte Spill
        movq    %rdi, %rax
        ret

which is insane and wrong.  Now we produce:

_test5:                                 ## @test5
## BB#0:
	movslq	%esi, %rax
	movq	(%rdi,%rax), %rax
	addq	%rdx, %rax
	ret

llvm-svn: 123414
 2011-01-14 00:01:01 +00:00
Dan Gohman 103c4ebea5 Use the source-order scheduler instead of the "fast" scheduler at -O0, 
because it's more likely to keep debug line information in its original
order.

llvm-svn: 108496
 2010-07-16 02:01:19 +00:00
Dan Gohman e75704369d Revert 107840 107839 107813 107804 107800 107797 107791. 
Debug info intrinsics win for now.

llvm-svn: 107850
 2010-07-08 01:00:56 +00:00
Dan Gohman 2d4d01d0de Add X86FastISel support for return statements. This entails refactoring 
a bunch of stuff, to allow the target-independent calling convention
logic to be employed.

llvm-svn: 107800
 2010-07-07 18:32:53 +00:00
Dan Gohman 7937d5606d Teach X86FastISel to fold constant offsets and scaled indices in 
the same address.

llvm-svn: 107373
 2010-07-01 02:27:15 +00:00
Chris Lattner db4916a123 fix PR4984 by ensuring that fastisel adds properly sign extended GEP displacement 
values to machineinstrs.

llvm-svn: 81886
 2009-09-15 18:27:02 +00:00
Chris Lattner c25359e1a3 rename test 
llvm-svn: 81884
 2009-09-15 18:23:37 +00:00