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don't use dead loads as tests.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@83985 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2009-10-13 17:39:29 +00:00
parent 549e81f7de
commit 2d175064ab
1 changed files with 4 additions and 3 deletions
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7
test/Analysis/BasicAA/cas.ll
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@ -1,4 +1,4 @@
; RUN: opt < %s -basicaa -gvn -S | grep load | count 1
; RUN: opt < %s -basicaa -gvn -instcombine -S | grep {ret i32 0}
@flag0 = internal global i32 zeroinitializer
@turn = internal global i32 zeroinitializer
@ -6,9 +6,10 @@
define i32 @main() {
%a = load i32* @flag0
%b = tail call i32 @llvm.atomic.swap.i32.p0i32(i32* @turn, i32 1)
%b = tail call i32 @llvm.atomic.swap.i32.p0i32(i32* @turn, i32 1)
%c = load i32* @flag0
ret i32 %c
%d = sub i32 %a, %c
ret i32 %d
}
declare i32 @llvm.atomic.swap.i32.p0i32(i32*, i32) nounwind