| ; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py |
| ; RUN: llc -mtriple=x86_64-unknown-linux-gnu %s -o - | FileCheck %s |
| |
| define i8 @_BitScanForward(ptr nocapture %Index, i32 %Mask) { |
| ; CHECK-LABEL: _BitScanForward: |
| ; CHECK: # %bb.0: # %entry |
| ; CHECK-NEXT: #APP |
| ; CHECK-NEXT: bsfl %esi, %ecx |
| ; CHECK-NEXT: #NO_APP |
| ; CHECK-NEXT: setne %al |
| ; CHECK-NEXT: movl %ecx, (%rdi) |
| ; CHECK-NEXT: retq |
| entry: |
| %0 = tail call { i8, i32 } asm "bsf$(l $2,$1 $| $1,$2$)", "={@ccnz},=r,r,~{dirflag},~{fpsr},~{flags}"(i32 %Mask) |
| %asmresult = extractvalue { i8, i32 } %0, 0 |
| %asmresult1 = extractvalue { i8, i32 } %0, 1 |
| store i32 %asmresult1, ptr %Index, align 4 |
| ret i8 %asmresult |
| } |
