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| author | Evan Cheng <evan.cheng@apple.com> | 2012-06-21 05:56:05 +0000 |
|---|---|---|
| committer | Evan Cheng <evan.cheng@apple.com> | 2012-06-21 05:56:05 +0000 |
| commit | 8ef0968dc230f6fae8fcbd6dc4a5cb9ccc780b6b (patch) | |
| tree | 4dcacc50d2c34a682fe9314c4b7a5c559e97d1b6 /test | |
| parent | b60182e99b97f31756b013022d94fcfb1aa0be73 (diff) | |
| download | external_llvm-8ef0968dc230f6fae8fcbd6dc4a5cb9ccc780b6b.zip external_llvm-8ef0968dc230f6fae8fcbd6dc4a5cb9ccc780b6b.tar.gz external_llvm-8ef0968dc230f6fae8fcbd6dc4a5cb9ccc780b6b.tar.bz2 | |
Emit a single _udivmodsi4 libcall instead of two separate _udivsi3 and
_umodsi3 libcalls if they have the same arguments. This optimization
was apparently broken if one of the node was replaced in place.
rdar://11714607
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158900 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test')
| -rw-r--r-- | test/CodeGen/ARM/divmod.ll | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/test/CodeGen/ARM/divmod.ll b/test/CodeGen/ARM/divmod.ll index 49c4103..7fbf8f4 100644 --- a/test/CodeGen/ARM/divmod.ll +++ b/test/CodeGen/ARM/divmod.ll @@ -1,4 +1,4 @@ -; RUN: llc < %s -mtriple=arm-apple-ios5.0 | FileCheck %s +; RUN: llc < %s -mtriple=arm-apple-ios5.0 -mcpu=cortex-a8 | FileCheck %s define void @foo(i32 %x, i32 %y, i32* nocapture %P) nounwind ssp { entry: @@ -56,3 +56,17 @@ bb1: declare i32 @llvm.objectsize.i32(i8*, i1) nounwind readnone declare i8* @__memset_chk(i8*, i32, i32, i32) nounwind + +; rdar://11714607 +define i32 @howmany(i32 %x, i32 %y) nounwind { +entry: +; CHECK: howmany: +; CHECK: bl ___udivmodsi4 +; CHECK-NOT: ___udivsi3 + %rem = urem i32 %x, %y + %div = udiv i32 %x, %y + %not.cmp = icmp ne i32 %rem, 0 + %add = zext i1 %not.cmp to i32 + %cond = add i32 %add, %div + ret i32 %cond +} |