pr47482.ll 1.35 KB
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc < %s -mtriple=x86_64-unknown-unknown -mattr=bmi | FileCheck %s

@a = external local_unnamed_addr global i32, align 4
@f = external local_unnamed_addr global i32, align 4

define void @g(i32* %x, i32* %y, i32* %z) {
; CHECK-LABEL: g:
; CHECK:       # %bb.0: # %entry
; CHECK-NEXT:    movl {{.*}}(%rip), %eax
; CHECK-NEXT:    #APP
; CHECK-NEXT:    #NO_APP
; CHECK-NEXT:    xorl %ecx, %ecx
; CHECK-NEXT:    testl %eax, %eax
; CHECK-NEXT:    sete %cl
; CHECK-NEXT:    addl %ecx, %ecx
; CHECK-NEXT:    orl (%rdi), %ecx
; CHECK-NEXT:    movl $0, (%rsi)
; CHECK-NEXT:    #APP
; CHECK-NEXT:    #NO_APP
; CHECK-NEXT:    shll $8, %eax
; CHECK-NEXT:    bextrl %eax, {{.*}}(%rip), %eax
; CHECK-NEXT:    orl %ecx, %eax
; CHECK-NEXT:    movl %eax, (%rdx)
; CHECK-NEXT:    retq
entry:
  %0 = load i32, i32* @a, align 4
  %1 = tail call i32 asm "", "=r,r,~{dirflag},~{fpsr},~{flags}"(i32 %0)
  %2 = icmp eq i32 %1, 0
  %shl1 = select i1 %2, i32 2, i32 0
  %3 = load i32, i32* %x, align 4
  %or = or i32 %3, %shl1
  store i32 0, i32* %y, align 4
  %4 = tail call i32 asm "", "=r,~{dirflag},~{fpsr},~{flags}"()
  %notmask = shl nsw i32 -1, %4
  %sub = xor i32 %notmask, -1
  %5 = load i32, i32* @f, align 4
  %and4 = and i32 %5, %sub
  %or6 = or i32 %and4, %or
  store i32 %or6, i32* %z, align 4
  ret void
}