| ; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py |
| ; RUN: llc < %s -mtriple=i686-- -mattr=+lzcnt | FileCheck %s --check-prefix=X86 |
| ; RUN: llc < %s -mtriple=x86_64-linux-gnux32 -mattr=+lzcnt | FileCheck %s --check-prefix=X32 |
| ; RUN: llc < %s -mtriple=x86_64-- -mattr=+lzcnt | FileCheck %s --check-prefix=X64 |
| |
| 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 { |
| ; X86-LABEL: t1: |
| ; X86: # %bb.0: |
| ; X86-NEXT: movzbl {{[0-9]+}}(%esp), %eax |
| ; X86-NEXT: lzcntl %eax, %eax |
| ; X86-NEXT: addl $-24, %eax |
| ; X86-NEXT: # kill: def $al killed $al killed $eax |
| ; X86-NEXT: retl |
| ; |
| ; X32-LABEL: t1: |
| ; X32: # %bb.0: |
| ; X32-NEXT: movzbl %dil, %eax |
| ; X32-NEXT: lzcntl %eax, %eax |
| ; X32-NEXT: addl $-24, %eax |
| ; X32-NEXT: # kill: def $al killed $al killed $eax |
| ; X32-NEXT: retq |
| ; |
| ; X64-LABEL: t1: |
| ; X64: # %bb.0: |
| ; X64-NEXT: movzbl %dil, %eax |
| ; X64-NEXT: lzcntl %eax, %eax |
| ; X64-NEXT: addl $-24, %eax |
| ; X64-NEXT: # kill: def $al killed $al killed $eax |
| ; X64-NEXT: retq |
| %tmp = tail call i8 @llvm.ctlz.i8( i8 %x, i1 false ) |
| ret i8 %tmp |
| } |
| |
| define i16 @t2(i16 %x) nounwind { |
| ; X86-LABEL: t2: |
| ; X86: # %bb.0: |
| ; X86-NEXT: lzcntw {{[0-9]+}}(%esp), %ax |
| ; X86-NEXT: retl |
| ; |
| ; X32-LABEL: t2: |
| ; X32: # %bb.0: |
| ; X32-NEXT: lzcntw %di, %ax |
| ; X32-NEXT: retq |
| ; |
| ; X64-LABEL: t2: |
| ; X64: # %bb.0: |
| ; X64-NEXT: lzcntw %di, %ax |
| ; X64-NEXT: retq |
| %tmp = tail call i16 @llvm.ctlz.i16( i16 %x, i1 false ) |
| ret i16 %tmp |
| } |
| |
| define i32 @t3(i32 %x) nounwind { |
| ; X86-LABEL: t3: |
| ; X86: # %bb.0: |
| ; X86-NEXT: lzcntl {{[0-9]+}}(%esp), %eax |
| ; X86-NEXT: retl |
| ; |
| ; X32-LABEL: t3: |
| ; X32: # %bb.0: |
| ; X32-NEXT: lzcntl %edi, %eax |
| ; X32-NEXT: retq |
| ; |
| ; X64-LABEL: t3: |
| ; X64: # %bb.0: |
| ; X64-NEXT: lzcntl %edi, %eax |
| ; X64-NEXT: retq |
| %tmp = tail call i32 @llvm.ctlz.i32( i32 %x, i1 false ) |
| ret i32 %tmp |
| } |
| |
| define i64 @t4(i64 %x) nounwind { |
| ; X86-LABEL: t4: |
| ; X86: # %bb.0: |
| ; X86-NEXT: movl {{[0-9]+}}(%esp), %eax |
| ; X86-NEXT: testl %eax, %eax |
| ; X86-NEXT: jne .LBB3_1 |
| ; X86-NEXT: # %bb.2: |
| ; X86-NEXT: lzcntl {{[0-9]+}}(%esp), %eax |
| ; X86-NEXT: addl $32, %eax |
| ; X86-NEXT: xorl %edx, %edx |
| ; X86-NEXT: retl |
| ; X86-NEXT: .LBB3_1: |
| ; X86-NEXT: lzcntl %eax, %eax |
| ; X86-NEXT: xorl %edx, %edx |
| ; X86-NEXT: retl |
| ; |
| ; X32-LABEL: t4: |
| ; X32: # %bb.0: |
| ; X32-NEXT: lzcntq %rdi, %rax |
| ; X32-NEXT: retq |
| ; |
| ; X64-LABEL: t4: |
| ; X64: # %bb.0: |
| ; X64-NEXT: lzcntq %rdi, %rax |
| ; X64-NEXT: retq |
| %tmp = tail call i64 @llvm.ctlz.i64( i64 %x, i1 false ) |
| ret i64 %tmp |
| } |
| |
| define i8 @t5(i8 %x) nounwind { |
| ; X86-LABEL: t5: |
| ; X86: # %bb.0: |
| ; X86-NEXT: movzbl {{[0-9]+}}(%esp), %eax |
| ; X86-NEXT: lzcntl %eax, %eax |
| ; X86-NEXT: addl $-24, %eax |
| ; X86-NEXT: # kill: def $al killed $al killed $eax |
| ; X86-NEXT: retl |
| ; |
| ; X32-LABEL: t5: |
| ; X32: # %bb.0: |
| ; X32-NEXT: movzbl %dil, %eax |
| ; X32-NEXT: lzcntl %eax, %eax |
| ; X32-NEXT: addl $-24, %eax |
| ; X32-NEXT: # kill: def $al killed $al killed $eax |
| ; X32-NEXT: retq |
| ; |
| ; X64-LABEL: t5: |
| ; X64: # %bb.0: |
| ; X64-NEXT: movzbl %dil, %eax |
| ; X64-NEXT: lzcntl %eax, %eax |
| ; X64-NEXT: addl $-24, %eax |
| ; X64-NEXT: # kill: def $al killed $al killed $eax |
| ; X64-NEXT: retq |
| %tmp = tail call i8 @llvm.ctlz.i8( i8 %x, i1 true ) |
| ret i8 %tmp |
| } |
| |
| define i16 @t6(i16 %x) nounwind { |
| ; X86-LABEL: t6: |
| ; X86: # %bb.0: |
| ; X86-NEXT: lzcntw {{[0-9]+}}(%esp), %ax |
| ; X86-NEXT: retl |
| ; |
| ; X32-LABEL: t6: |
| ; X32: # %bb.0: |
| ; X32-NEXT: lzcntw %di, %ax |
| ; X32-NEXT: retq |
| ; |
| ; X64-LABEL: t6: |
| ; X64: # %bb.0: |
| ; X64-NEXT: lzcntw %di, %ax |
| ; X64-NEXT: retq |
| %tmp = tail call i16 @llvm.ctlz.i16( i16 %x, i1 true ) |
| ret i16 %tmp |
| } |
| |
| define i32 @t7(i32 %x) nounwind { |
| ; X86-LABEL: t7: |
| ; X86: # %bb.0: |
| ; X86-NEXT: lzcntl {{[0-9]+}}(%esp), %eax |
| ; X86-NEXT: retl |
| ; |
| ; X32-LABEL: t7: |
| ; X32: # %bb.0: |
| ; X32-NEXT: lzcntl %edi, %eax |
| ; X32-NEXT: retq |
| ; |
| ; X64-LABEL: t7: |
| ; X64: # %bb.0: |
| ; X64-NEXT: lzcntl %edi, %eax |
| ; X64-NEXT: retq |
| %tmp = tail call i32 @llvm.ctlz.i32( i32 %x, i1 true ) |
| ret i32 %tmp |
| } |
| |
| define i64 @t8(i64 %x) nounwind { |
| ; X86-LABEL: t8: |
| ; X86: # %bb.0: |
| ; X86-NEXT: movl {{[0-9]+}}(%esp), %eax |
| ; X86-NEXT: testl %eax, %eax |
| ; X86-NEXT: jne .LBB7_1 |
| ; X86-NEXT: # %bb.2: |
| ; X86-NEXT: lzcntl {{[0-9]+}}(%esp), %eax |
| ; X86-NEXT: addl $32, %eax |
| ; X86-NEXT: xorl %edx, %edx |
| ; X86-NEXT: retl |
| ; X86-NEXT: .LBB7_1: |
| ; X86-NEXT: lzcntl %eax, %eax |
| ; X86-NEXT: xorl %edx, %edx |
| ; X86-NEXT: retl |
| ; |
| ; X32-LABEL: t8: |
| ; X32: # %bb.0: |
| ; X32-NEXT: lzcntq %rdi, %rax |
| ; X32-NEXT: retq |
| ; |
| ; X64-LABEL: t8: |
| ; X64: # %bb.0: |
| ; X64-NEXT: lzcntq %rdi, %rax |
| ; X64-NEXT: retq |
| %tmp = tail call i64 @llvm.ctlz.i64( i64 %x, i1 true ) |
| ret i64 %tmp |
| } |