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| author | Dan Gohman <gohman@apple.com> | 2009-08-11 20:47:47 +0000 |
|---|---|---|
| committer | Dan Gohman <gohman@apple.com> | 2009-08-11 20:47:47 +0000 |
| commit | 1bdf5dc835e74ff6710dbd452601542d19116d08 (patch) | |
| tree | 665dd1efc0a54ac8cc90d80e29d238baf79221eb /test/Transforms | |
| parent | 825b72b0571821bf2d378749f69d6c4cfb52d2f9 (diff) | |
| download | llvm-1bdf5dc835e74ff6710dbd452601542d19116d08.tar.gz llvm-1bdf5dc835e74ff6710dbd452601542d19116d08.tar.bz2 llvm-1bdf5dc835e74ff6710dbd452601542d19116d08.tar.xz | |
Optimize exact sdiv by a constant power of 2 to ashr.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78714 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/Transforms')
| -rw-r--r-- | test/Transforms/InstCombine/exact-sdiv.ll | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/test/Transforms/InstCombine/exact-sdiv.ll b/test/Transforms/InstCombine/exact-sdiv.ll new file mode 100644 index 0000000000..9ed524f8ec --- /dev/null +++ b/test/Transforms/InstCombine/exact-sdiv.ll @@ -0,0 +1,15 @@ +; RUN: llvm-as < %s | opt -instcombine | llvm-dis | FileCheck %s + +; CHECK: define i32 @foo +; CHECK: sdiv i32 %x, 8 +define i32 @foo(i32 %x) { + %y = sdiv i32 %x, 8 + ret i32 %y +} + +; CHECK: define i32 @bar +; CHECK: ashr i32 %x, 3 +define i32 @bar(i32 %x) { + %y = sdiv exact i32 %x, 8 + ret i32 %y +} |