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| author | Eli Friedman <eli.friedman@gmail.com> | 2009-07-13 22:46:01 +0000 |
|---|---|---|
| committer | Eli Friedman <eli.friedman@gmail.com> | 2009-07-13 22:46:01 +0000 |
| commit | 070a981ab7c9b1ba82af9acf5c3b94da8af48646 (patch) | |
| tree | 1f27029d09615a6927994790194d23959c48cf5f /test/Transforms/InstCombine/udivrem-change-width.ll | |
| parent | a43c3aca851b10329f756b084d897e9dfb2d0729 (diff) | |
| download | llvm-070a981ab7c9b1ba82af9acf5c3b94da8af48646.tar.gz llvm-070a981ab7c9b1ba82af9acf5c3b94da8af48646.tar.bz2 llvm-070a981ab7c9b1ba82af9acf5c3b94da8af48646.tar.xz | |
PR4548: optimize zext+udiv+trunc to udiv.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@75539 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/Transforms/InstCombine/udivrem-change-width.ll')
| -rw-r--r-- | test/Transforms/InstCombine/udivrem-change-width.ll | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/test/Transforms/InstCombine/udivrem-change-width.ll b/test/Transforms/InstCombine/udivrem-change-width.ll new file mode 100644 index 0000000000..eb4ba66237 --- /dev/null +++ b/test/Transforms/InstCombine/udivrem-change-width.ll @@ -0,0 +1,19 @@ +; RUN: llvm-as < %s | opt -instcombine | llvm-dis | not grep zext +; PR4548 + +define i8 @udiv_i8(i8 %a, i8 %b) nounwind { + %conv = zext i8 %a to i32 + %conv2 = zext i8 %b to i32 + %div = udiv i32 %conv, %conv2 + %conv3 = trunc i32 %div to i8 + ret i8 %conv3 +} + +define i8 @urem_i8(i8 %a, i8 %b) nounwind { + %conv = zext i8 %a to i32 + %conv2 = zext i8 %b to i32 + %div = urem i32 %conv, %conv2 + %conv3 = trunc i32 %div to i8 + ret i8 %conv3 +} + |