llvm-mirror/test/Analysis/BasicAA/2010-09-15-GEP-SignedArithmetic.ll

; RUN: opt < %s -basicaa -aa-eval -print-all-alias-modref-info -disable-output |& grep {1 may alias}
; PR7959

target datalayout = "e-p:32:32:32"

define i32 @test(i32* %tab, i32 %indvar) nounwind {
  %tmp31 = mul i32 %indvar, -2
  %tmp32 = add i32 %tmp31, 30
  %t.5 = getelementptr i32* %tab, i32 %tmp32
  %loada = load i32* %tab
  store i32 0, i32* %t.5
  %loadb = load i32* %tab
  %rval = add i32 %loada, %loadb
  ret i32 %rval
}
Revert commit 131781, to see if it fixes the x86-64 dragonegg buildbot. Original log message: When BasicAA can determine that two pointers have the same base but differ by a dynamic offset, return PartialAlias instead of MayAlias. See the comment in the code for details. This fixes PR9971. llvm-svn: 131809 2011-05-21 22:54:46 +02:00			`; RUN: opt < %s -basicaa -aa-eval -print-all-alias-modref-info -disable-output \|& grep {1 may alias}`
PR7959: Handle negative scales in GEPs correctly in BasicAA for non-64-bit targets. llvm-svn: 114015 2010-09-15 22:08:03 +02:00			`; PR7959`

			`target datalayout = "e-p:32:32:32"`

			`define i32 @test(i32* %tab, i32 %indvar) nounwind {`
			`%tmp31 = mul i32 %indvar, -2`
			`%tmp32 = add i32 %tmp31, 30`
			`%t.5 = getelementptr i32* %tab, i32 %tmp32`
			`%loada = load i32* %tab`
			`store i32 0, i32* %t.5`
			`%loadb = load i32* %tab`
			`%rval = add i32 %loada, %loadb`
			`ret i32 %rval`
			`}`