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llvm-project/llvm/test/Analysis/BasicAA
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Chris Lattner 29bc8a91d3 Teach basicaa that x|c == x+c when the c bits of x are clear. This 
allows us to compile the example in readme.txt into:

LBB1_1:                                                     ## %bb
	movl	4(%rdx,%rax), %ecx
	movl	%ecx, %esi
	imull	(%rdx,%rax), %esi
	imull	%esi, %ecx
	movl	%esi, 8(%rdx,%rax)
	imull	%ecx, %esi
	movl	%ecx, 12(%rdx,%rax)
	movl	%esi, 16(%rdx,%rax)
	imull	%ecx, %esi
	movl	%esi, 20(%rdx,%rax)
	addq	$16, %rax
	cmpq	$4000, %rax
	jne	LBB1_1

instead of:

LBB1_1: 
	movl	(%rdx,%rax), %ecx
	imull	4(%rdx,%rax), %ecx
	movl	%ecx, 8(%rdx,%rax)
	imull	4(%rdx,%rax), %ecx
	movl	%ecx, 12(%rdx,%rax)
	imull	8(%rdx,%rax), %ecx
	movl	%ecx, 16(%rdx,%rax)
	imull	12(%rdx,%rax), %ecx
	movl	%ecx, 20(%rdx,%rax)
	addq	$16, %rax
	cmpq	$4000, %rax
	jne	LBB1_1

GCC (4.2) doesn't seem to be able to eliminate the loads in this 
testcase either, it generates:

L2:
	movl	(%rdx), %eax
	imull	4(%rdx), %eax
	movl	%eax, 8(%rdx)
	imull	4(%rdx), %eax
	movl	%eax, 12(%rdx)
	imull	8(%rdx), %eax
	movl	%eax, 16(%rdx)
	imull	12(%rdx), %eax
	movl	%eax, 20(%rdx)
	addl	$4, %ecx
	addq	$16, %rdx
	cmpl	$1002, %ecx
	jne	L2

llvm-svn: 89952
 		2009-11-26 16:26:43 +00:00
..
2003-02-26-AccessSizeTest.ll Change tests from "opt %s" to "opt < %s" so that opt doesn't see the 2009-09-11 18:01:28 +00:00
2003-03-04-GEPCrash.ll Change tests from "opt %s" to "opt < %s" so that opt doesn't see the 2009-09-11 18:01:28 +00:00
2003-04-22-GEPProblem.ll Change tests from "opt %s" to "opt < %s" so that opt doesn't see the 2009-09-11 18:01:28 +00:00
2003-04-25-GEPCrash.ll Change tests from "opt %s" to "opt < %s" so that opt doesn't see the 2009-09-11 18:01:28 +00:00
2003-05-21-GEP-Problem.ll Change tests from "opt %s" to "opt < %s" so that opt doesn't see the 2009-09-11 18:01:28 +00:00
2003-06-01-AliasCrash.ll Change tests from "opt %s" to "opt < %s" so that opt doesn't see the 2009-09-11 18:01:28 +00:00
2003-07-03-BasicAACrash.ll Change tests from "opt %s" to "opt < %s" so that opt doesn't see the 2009-09-11 18:01:28 +00:00
2003-09-19-LocalArgument.ll Change tests from "opt %s" to "opt < %s" so that opt doesn't see the 2009-09-11 18:01:28 +00:00
2003-11-04-SimpleCases.ll Change tests from "opt %s" to "opt < %s" so that opt doesn't see the 2009-09-11 18:01:28 +00:00
2003-12-11-ConstExprGEP.ll Change tests from "opt %s" to "opt < %s" so that opt doesn't see the 2009-09-11 18:01:28 +00:00
2004-07-28-MustAliasbug.ll Change tests from "opt %s" to "opt < %s" so that opt doesn't see the 2009-09-11 18:01:28 +00:00
2004-12-08-BasicAACrash.ll Change tests from "opt %s" to "opt < %s" so that opt doesn't see the 2009-09-11 18:01:28 +00:00
2004-12-08-BasicAACrash2.ll Change tests from "opt %s" to "opt < %s" so that opt doesn't see the 2009-09-11 18:01:28 +00:00
2005-03-09-BrokenBasicAA.ll Change tests from "opt %s" to "opt < %s" so that opt doesn't see the 2009-09-11 18:01:28 +00:00
2006-03-03-BadArraySubscript.ll Make opt default to not adding a target data string and update tests that depend on target data to supply it within the test 2009-11-03 15:29:06 +00:00
2006-11-03-BasicAAVectorCrash.ll Eliminate more redundant llvm-as calls. 2009-09-11 18:17:12 +00:00
2007-01-13-BasePointerBadNoAlias.ll Change tests from "opt %s" to "opt < %s" so that opt doesn't see the 2009-09-11 18:01:28 +00:00
2007-08-01-NoAliasAndCalls.ll Eliminate more uses of llvm-as and llvm-dis. 2009-09-09 00:09:15 +00:00
2007-08-01-NoAliasAndGEP.ll Eliminate more uses of llvm-as and llvm-dis. 2009-09-09 00:09:15 +00:00
2007-08-05-GetOverloadedModRef.ll Change tests from "opt %s" to "opt < %s" so that opt doesn't see the 2009-09-11 18:01:28 +00:00
2007-10-24-ArgumentsGlobals.ll Change tests from "opt %s" to "opt < %s" so that opt doesn't see the 2009-09-11 18:01:28 +00:00
2007-11-05-SizeCrash.ll Change tests from "opt %s" to "opt < %s" so that opt doesn't see the 2009-09-11 18:01:28 +00:00
2007-12-08-OutOfBoundsCrash.ll Change tests from "opt %s" to "opt < %s" so that opt doesn't see the 2009-09-11 18:01:28 +00:00
2008-04-15-Byval.ll Change tests from "opt %s" to "opt < %s" so that opt doesn't see the 2009-09-11 18:01:28 +00:00
2008-06-02-GEPTailCrash.ll Change tests from "opt %s" to "opt < %s" so that opt doesn't see the 2009-09-11 18:01:28 +00:00
2008-11-23-NoaliasRet.ll Change tests from "opt %s" to "opt < %s" so that opt doesn't see the 2009-09-11 18:01:28 +00:00
2009-03-04-GEPNoalias.ll Change tests from "opt %s" to "opt < %s" so that opt doesn't see the 2009-09-11 18:01:28 +00:00
2009-10-13-AtomicModRef.ll Make opt default to not adding a target data string and update tests that depend on target data to supply it within the test 2009-11-03 15:29:06 +00:00
2009-10-13-GEP-BaseNoAlias.ll Another BasicAA fix. If a value does not alias a GEP's base pointer, then it 2009-10-14 06:41:49 +00:00
byval.ll Change tests from "opt %s" to "opt < %s" so that opt doesn't see the 2009-09-11 18:01:28 +00:00
cas.ll don't use dead loads as tests. 2009-10-13 17:39:29 +00:00
constant-over-index.ll Change tests from "opt %s" to "opt < %s" so that opt doesn't see the 2009-09-11 18:01:28 +00:00
dg.exp sabre brings to my attention that the 'tr' suffix is also obsolete 2008-05-20 21:00:03 +00:00
featuretest.ll Make opt default to not adding a target data string and update tests that depend on target data to supply it within the test 2009-11-03 15:29:06 +00:00
gcsetest.ll Change tests from "opt %s" to "opt < %s" so that opt doesn't see the 2009-09-11 18:01:28 +00:00
gep-alias.ll Teach basicaa that x|c == x+c when the c bits of x are clear. This 2009-11-26 16:26:43 +00:00
global-size.ll Make opt default to not adding a target data string and update tests that depend on target data to supply it within the test 2009-11-03 15:29:06 +00:00
modref.ll add a new random feature test 2009-11-26 02:16:28 +00:00
no-escape-call.ll Change tests from "opt %s" to "opt < %s" so that opt doesn't see the 2009-09-11 18:01:28 +00:00
nocapture.ll Change tests from "opt %s" to "opt < %s" so that opt doesn't see the 2009-09-11 18:01:28 +00:00
phi-aa.ll Replace test with a simpler hand crafted one. 2009-10-14 01:45:10 +00:00
phi-and-select.ll Teach BasicAA how to analyze Select instructions, and make it more 2009-10-26 21:55:43 +00:00
pure-const-dce.ll Change tests from "opt %s" to "opt < %s" so that opt doesn't see the 2009-09-11 18:01:28 +00:00
store-promote.ll Make opt default to not adding a target data string and update tests that depend on target data to supply it within the test 2009-11-03 15:29:06 +00:00
tailcall-modref.ll Change tests from "opt %s" to "opt < %s" so that opt doesn't see the 2009-09-11 18:01:28 +00:00