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Diffstat (limited to 'test/Transforms/GVN/pre-basic-add.ll')
| -rw-r--r-- | test/Transforms/GVN/pre-basic-add.ll | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/test/Transforms/GVN/pre-basic-add.ll b/test/Transforms/GVN/pre-basic-add.ll new file mode 100644 index 000000000000..f00bda3c4469 --- /dev/null +++ b/test/Transforms/GVN/pre-basic-add.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(...) |