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| author | Chris Lattner <sabre@nondot.org> | 2009-10-18 04:50:18 +0000 |
|---|---|---|
| committer | Chris Lattner <sabre@nondot.org> | 2009-10-18 04:50:18 +0000 |
| commit | 457ecd5dabad70a41ac85283772876ca81eb414c (patch) | |
| tree | 2e242f6942c95ab208fc56dc338c73e731116370 /llvm/test/Analysis/BasicAA | |
| parent | ecb832fd9301232b242abd43b7eade458a6cbcca (diff) | |
| download | bcm5719-llvm-457ecd5dabad70a41ac85283772876ca81eb414c.tar.gz bcm5719-llvm-457ecd5dabad70a41ac85283772876ca81eb414c.zip | |
tighten test2, add a test that it doesn't get transformed in the invalid edge case.
llvm-svn: 84401
Diffstat (limited to 'llvm/test/Analysis/BasicAA')
| -rw-r--r-- | llvm/test/Analysis/BasicAA/modref.ll | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/llvm/test/Analysis/BasicAA/modref.ll b/llvm/test/Analysis/BasicAA/modref.ll index b3d93acf55e..a089864271b 100644 --- a/llvm/test/Analysis/BasicAA/modref.ll +++ b/llvm/test/Analysis/BasicAA/modref.ll @@ -40,7 +40,7 @@ define i8 @test1() { define i8 @test2(i8* %P) { ; CHECK: @test2 - %P2 = getelementptr i8* %P, i32 1000 + %P2 = getelementptr i8* %P, i32 127 store i8 1, i8* %P2 ;; Not dead across memset call void @llvm.memset.i8(i8* %P, i8 2, i8 127, i32 0) %A = load i8* %P2 @@ -48,6 +48,17 @@ define i8 @test2(i8* %P) { ; CHECK: ret i8 1 } +define i8 @test2a(i8* %P) { +; CHECK: @test2 + %P2 = getelementptr i8* %P, i32 126 + store i8 1, i8* %P2 ;; Dead, clobbered by memset. + call void @llvm.memset.i8(i8* %P, i8 2, i8 127, i32 0) + %A = load i8* %P2 + ret i8 %A +; CHECK: %A = load i8* %P2 +; CHECK: ret i8 %A +} + define void @test3(i8* %P) { ; CHECK: @test3 %P2 = getelementptr i8* %P, i32 2 |
