blob: 2643b78936a81698c4553f7c69b7bb3fb514e461 [file] [log] [blame]
; 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(i32* 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, i32* %Index, align 4
ret i8 %asmresult
}