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| author | Benjamin Kramer <benny.kra@googlemail.com> | 2010-05-25 22:53:43 +0000 |
|---|---|---|
| committer | Benjamin Kramer <benny.kra@googlemail.com> | 2010-05-25 22:53:43 +0000 |
| commit | 48aefe15d08e4046b94715ea44e1f4a94af481a6 (patch) | |
| tree | d55724480716cf71ac68d3b169ed7a94119104d1 /test/Transforms | |
| parent | f10bc81b4e84003f8842e8ee7eee9d626de77e5f (diff) | |
| download | external_llvm-48aefe15d08e4046b94715ea44e1f4a94af481a6.zip external_llvm-48aefe15d08e4046b94715ea44e1f4a94af481a6.tar.gz external_llvm-48aefe15d08e4046b94715ea44e1f4a94af481a6.tar.bz2 | |
Properly promote operands when optimizing a single-character memcmp.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104648 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/Transforms')
| -rw-r--r-- | test/Transforms/SimplifyLibCalls/memcmp.ll | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/test/Transforms/SimplifyLibCalls/memcmp.ll b/test/Transforms/SimplifyLibCalls/memcmp.ll index 640d232..ee99501 100644 --- a/test/Transforms/SimplifyLibCalls/memcmp.ll +++ b/test/Transforms/SimplifyLibCalls/memcmp.ll @@ -1,5 +1,5 @@ ; Test that the memcmpOptimizer works correctly -; RUN: opt < %s -simplify-libcalls -S | not grep {call.*memcmp} +; RUN: opt < %s -simplify-libcalls -S | FileCheck %s @h = constant [2 x i8] c"h\00" ; <[2 x i8]*> [#uses=0] @hel = constant [4 x i8] c"hel\00" ; <[4 x i8]*> [#uses=0] @@ -9,14 +9,26 @@ declare i32 @memcmp(i8*, i8*, i32) define void @test(i8* %P, i8* %Q, i32 %N, i32* %IP, i1* %BP) { %A = call i32 @memcmp( i8* %P, i8* %P, i32 %N ) ; <i32> [#uses=1] +; CHECK-NOT: call {{.*}} memcmp +; CHECK: volatile store volatile store i32 %A, i32* %IP %B = call i32 @memcmp( i8* %P, i8* %Q, i32 0 ) ; <i32> [#uses=1] +; CHECK-NOT: call {{.*}} memcmp +; CHECK: volatile store volatile store i32 %B, i32* %IP %C = call i32 @memcmp( i8* %P, i8* %Q, i32 1 ) ; <i32> [#uses=1] +; CHECK: load +; CHECK: zext +; CHECK: load +; CHECK: zext +; CHECK: sub +; CHECK: volatile store volatile store i32 %C, i32* %IP %F = call i32 @memcmp(i8* getelementptr ([4 x i8]* @hel, i32 0, i32 0), i8* getelementptr ([8 x i8]* @hello_u, i32 0, i32 0), i32 3) +; CHECK-NOT: call {{.*}} memcmp +; CHECK: volatile store volatile store i32 %F, i32* %IP ret void } |