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| author | Owen Anderson <resistor@mac.com> | 2008-12-02 04:25:42 +0000 |
|---|---|---|
| committer | Owen Anderson <resistor@mac.com> | 2008-12-02 04:25:42 +0000 |
| commit | d4ba0f52efbbfcbd21c6475d71b4df791b645195 (patch) | |
| tree | 2cca164e2e67a49057a3da3f3905c1509b9e68c7 | |
| parent | 15a8480b6539c1895d1b4bef8c2c28e880212393 (diff) | |
| download | external_llvm-d4ba0f52efbbfcbd21c6475d71b4df791b645195.zip external_llvm-d4ba0f52efbbfcbd21c6475d71b4df791b645195.tar.gz external_llvm-d4ba0f52efbbfcbd21c6475d71b4df791b645195.tar.bz2 | |
Add a test for my previous PRE fix.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60394 91177308-0d34-0410-b5e6-96231b3b80d8
| -rw-r--r-- | test/Transforms/GVN/pre.ll | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/test/Transforms/GVN/pre.ll b/test/Transforms/GVN/pre.ll new file mode 100644 index 0000000..f00bda3 --- /dev/null +++ b/test/Transforms/GVN/pre.ll @@ -0,0 +1,27 @@ +; RUN: llvm-as < %s | opt -gvn -enable-pre | llvm-dis | grep {.pre} + +@H = common global i32 0 ; <i32*> [#uses=2] +@G = common global i32 0 ; <i32*> [#uses=1] + +define i32 @test() nounwind { +entry: + %0 = load i32* @H, align 4 ; <i32> [#uses=2] + %1 = call i32 (...)* @foo() nounwind ; <i32> [#uses=1] + %2 = icmp ne i32 %1, 0 ; <i1> [#uses=1] + br i1 %2, label %bb, label %bb1 + +bb: ; preds = %entry + %3 = add i32 %0, 42 ; <i32> [#uses=1] + store i32 %3, i32* @G, align 4 + br label %bb1 + +bb1: ; preds = %bb, %entry + %4 = add i32 %0, 42 ; <i32> [#uses=1] + store i32 %4, i32* @H, align 4 + br label %return + +return: ; preds = %bb1 + ret i32 0 +} + +declare i32 @foo(...) |