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| author | Craig Topper <craig.topper@gmail.com> | 2011-10-11 06:47:01 +0000 |
|---|---|---|
| committer | Craig Topper <craig.topper@gmail.com> | 2011-10-11 06:47:01 +0000 |
| commit | 603cc851f80e71ba308d198eb3966e84cdc22045 (patch) | |
| tree | 78e8d5fea5d98cbd77a1c5d7cd84da6f4856146b /llvm | |
| parent | 271064e87310f9482b7c48fa6bbc9199c9fa6f20 (diff) | |
| download | bcm5719-llvm-603cc851f80e71ba308d198eb3966e84cdc22045.tar.gz bcm5719-llvm-603cc851f80e71ba308d198eb3966e84cdc22045.zip | |
Test case for X86 LZCNT instruction selection.
llvm-svn: 141652
Diffstat (limited to 'llvm')
| -rw-r--r-- | llvm/test/CodeGen/X86/lzcnt.ll | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/llvm/test/CodeGen/X86/lzcnt.ll b/llvm/test/CodeGen/X86/lzcnt.ll new file mode 100644 index 00000000000..e5a55abf1ab --- /dev/null +++ b/llvm/test/CodeGen/X86/lzcnt.ll @@ -0,0 +1,38 @@ +; RUN: llc < %s -march=x86-64 -mattr=+lzcnt | FileCheck %s + +define i32 @t1(i32 %x) nounwind { + %tmp = tail call i32 @llvm.ctlz.i32( i32 %x ) + ret i32 %tmp +; CHECK: t1: +; CHECK: lzcntl +} + +declare i32 @llvm.ctlz.i32(i32) nounwind readnone + +define i16 @t2(i16 %x) nounwind { + %tmp = tail call i16 @llvm.ctlz.i16( i16 %x ) + ret i16 %tmp +; CHECK: t2: +; CHECK: lzcntw +} + +declare i16 @llvm.ctlz.i16(i16) nounwind readnone + +define i64 @t3(i64 %x) nounwind { + %tmp = tail call i64 @llvm.ctlz.i64( i64 %x ) + ret i64 %tmp +; CHECK: t3: +; CHECK: lzcntq +} + +declare i64 @llvm.ctlz.i64(i64) nounwind readnone + +define i8 @t4(i8 %x) nounwind { + %tmp = tail call i8 @llvm.ctlz.i8( i8 %x ) + ret i8 %tmp +; CHECK: t4: +; CHECK: lzcntw +} + +declare i8 @llvm.ctlz.i8(i8) nounwind readnone + |
