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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 | a6f386b4cd953f5c2584672711792e6d3609c3e7 (patch) | |
| tree | 85b78051696259fde99bbfebd41608dd917d2c12 /test/CodeGen | |
| parent | 37f2167f15608ff56d202ff21954a456aab6e534 (diff) | |
| download | llvm-a6f386b4cd953f5c2584672711792e6d3609c3e7.tar.gz llvm-a6f386b4cd953f5c2584672711792e6d3609c3e7.tar.bz2 llvm-a6f386b4cd953f5c2584672711792e6d3609c3e7.tar.xz | |
Test case for X86 LZCNT instruction selection.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@141652 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/CodeGen')
| -rw-r--r-- | test/CodeGen/X86/lzcnt.ll | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/test/CodeGen/X86/lzcnt.ll b/test/CodeGen/X86/lzcnt.ll new file mode 100644 index 0000000000..e5a55abf1a --- /dev/null +++ b/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 + |