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Make use of the result of the loads even though that means adding -instcombine.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84125 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Nick Lewycky 2009-10-14 19:02:13 +00:00
parent 8e86b5195b
commit ca55ee03b0
1 changed files with 5 additions and 5 deletions
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10
test/Analysis/BasicAA/2009-10-13-AtomicModRef.ll
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@ -1,16 +1,16 @@
; RUN: opt -gvn -S < %s | FileCheck %s
; RUN: opt -gvn -instcombine -S < %s | FileCheck %s
declare i8 @llvm.atomic.load.add.i8.p0i8(i8*, i8)
define void @foo(i8* %ptr) {
define i8 @foo(i8* %ptr) {
%P = getelementptr i8* %ptr, i32 0
%Q = getelementptr i8* %ptr, i32 1
; CHECK: getelementptr
%X = load i8* %P
; CHECK: = load
%Y = call i8 @llvm.atomic.load.add.i8.p0i8(i8* %Q, i8 1)
%Z = load i8* %P
; CHECK-NOT: = load
ret void
; CHECK: ret void
%A = sub i8 %X, %Z
ret i8 %A
; CHECK: ret i8 0
}