| ; RUN: llc < %s -mtriple=x86_64-- -mattr=+lzcnt | FileCheck %s |
| |
| declare i8 @llvm.ctlz.i8(i8, i1) nounwind readnone |
| declare i16 @llvm.ctlz.i16(i16, i1) nounwind readnone |
| declare i32 @llvm.ctlz.i32(i32, i1) nounwind readnone |
| declare i64 @llvm.ctlz.i64(i64, i1) nounwind readnone |
| |
| define i8 @t1(i8 %x) nounwind { |
| %tmp = tail call i8 @llvm.ctlz.i8( i8 %x, i1 false ) |
| ret i8 %tmp |
| ; CHECK-LABEL: t1: |
| ; CHECK: lzcntl |
| } |
| |
| define i16 @t2(i16 %x) nounwind { |
| %tmp = tail call i16 @llvm.ctlz.i16( i16 %x, i1 false ) |
| ret i16 %tmp |
| ; CHECK-LABEL: t2: |
| ; CHECK: lzcntw |
| } |
| |
| define i32 @t3(i32 %x) nounwind { |
| %tmp = tail call i32 @llvm.ctlz.i32( i32 %x, i1 false ) |
| ret i32 %tmp |
| ; CHECK-LABEL: t3: |
| ; CHECK: lzcntl |
| } |
| |
| define i64 @t4(i64 %x) nounwind { |
| %tmp = tail call i64 @llvm.ctlz.i64( i64 %x, i1 false ) |
| ret i64 %tmp |
| ; CHECK-LABEL: t4: |
| ; CHECK: lzcntq |
| } |
| |
| define i8 @t5(i8 %x) nounwind { |
| %tmp = tail call i8 @llvm.ctlz.i8( i8 %x, i1 true ) |
| ret i8 %tmp |
| ; CHECK-LABEL: t5: |
| ; CHECK: lzcntl |
| } |
| |
| define i16 @t6(i16 %x) nounwind { |
| %tmp = tail call i16 @llvm.ctlz.i16( i16 %x, i1 true ) |
| ret i16 %tmp |
| ; CHECK-LABEL: t6: |
| ; CHECK: lzcntw |
| } |
| |
| define i32 @t7(i32 %x) nounwind { |
| %tmp = tail call i32 @llvm.ctlz.i32( i32 %x, i1 true ) |
| ret i32 %tmp |
| ; CHECK-LABEL: t7: |
| ; CHECK: lzcntl |
| } |
| |
| define i64 @t8(i64 %x) nounwind { |
| %tmp = tail call i64 @llvm.ctlz.i64( i64 %x, i1 true ) |
| ret i64 %tmp |
| ; CHECK-LABEL: t8: |
| ; CHECK: lzcntq |
| } |
