diff options
| author | Nate Begeman <natebegeman@mac.com> | 2005-09-01 00:04:03 +0000 |
|---|---|---|
| committer | Nate Begeman <natebegeman@mac.com> | 2005-09-01 00:04:03 +0000 |
| commit | feca19b0d4ea5c40c055955f8e6bc0bc8ac415b9 (patch) | |
| tree | 4f91f5cfd2bba21985dfb0c252905b6ad6ec5fcd | |
| parent | 67d2562be7d69bd56f08b7225ed8c82711a4113f (diff) | |
Add regression test for efficient codegen of i32 x i32 -> hi32(i64) as
mulhs.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23183 91177308-0d34-0410-b5e6-96231b3b80d8
| -rw-r--r-- | test/CodeGen/PowerPC/mulhs.ll | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/test/CodeGen/PowerPC/mulhs.ll b/test/CodeGen/PowerPC/mulhs.ll new file mode 100644 index 0000000000..cef169a3cc --- /dev/null +++ b/test/CodeGen/PowerPC/mulhs.ll @@ -0,0 +1,17 @@ +; All of these ands and shifts should be folded into rlwimi's +; RUN: llvm-as < mulhs.ll | llc -march=ppc32 | not grep mulhwu && +; RUN: llvm-as < mulhs.ll | llc -march=ppc32 | not grep srawi && +; RUN: llvm-as < mulhs.ll | llc -march=ppc32 | not grep add && +; RUN: llvm-as < mulhs.ll | llc -march=ppc32 | grep mulhw | wc -l | grep 1 + +implementation ; Functions: + +int %mulhs(int %a, int %b) { +entry: + %tmp.1 = cast int %a to ulong ; <ulong> [#uses=1] + %tmp.3 = cast int %b to ulong ; <ulong> [#uses=1] + %tmp.4 = mul ulong %tmp.3, %tmp.1 ; <ulong> [#uses=1] + %tmp.6 = shr ulong %tmp.4, ubyte 32 ; <ulong> [#uses=1] + %tmp.7 = cast ulong %tmp.6 to int ; <int> [#uses=1] + ret int %tmp.7 +} |