diff options
| 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 | 8c2ad812384d840f6b2f20742bb5741c3a4f59f8 (patch) | |
| tree | 8d0c3dba3e7c8993b98d32c038cfa08eba8a09e1 /llvm/test/CodeGen/ARM/divmod.ll | |
| parent | 422080f547c0841d18a44d6395dc28e10c8ab467 (diff) | |
| download | bcm5719-llvm-8c2ad812384d840f6b2f20742bb5741c3a4f59f8.tar.gz bcm5719-llvm-8c2ad812384d840f6b2f20742bb5741c3a4f59f8.zip | |
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
llvm-svn: 158900
Diffstat (limited to 'llvm/test/CodeGen/ARM/divmod.ll')
| -rw-r--r-- | llvm/test/CodeGen/ARM/divmod.ll | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/llvm/test/CodeGen/ARM/divmod.ll b/llvm/test/CodeGen/ARM/divmod.ll index 49c41037578..7fbf8f40903 100644 --- a/llvm/test/CodeGen/ARM/divmod.ll +++ b/llvm/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 +} |
