1 ; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py 2 ; RUN: llc < %s -fast-isel -mtriple=i686-unknown-unknown -O0 -mcpu=skx | FileCheck %s 3 4 @c = external global i8, align 1 5 6 ; Function Attrs: noinline nounwind 7 define void @_Z1av() { 8 ; CHECK-LABEL: _Z1av: 9 ; CHECK: # %bb.0: # %entry 10 ; CHECK-NEXT: subl $2, %esp 11 ; CHECK-NEXT: .cfi_def_cfa_offset 6 12 ; CHECK-NEXT: xorl %eax, %eax 13 ; CHECK-NEXT: movb %al, %cl 14 ; CHECK-NEXT: movb c, %dl 15 ; CHECK-NEXT: xorb $-1, %dl 16 ; CHECK-NEXT: testb $1, %dl 17 ; CHECK-NEXT: movb %cl, (%esp) # 1-byte Spill 18 ; CHECK-NEXT: jne .LBB0_1 19 ; CHECK-NEXT: jmp .LBB0_2 20 ; CHECK-NEXT: .LBB0_1: # %land.rhs 21 ; CHECK-NEXT: xorl %eax, %eax 22 ; CHECK-NEXT: movb %al, %cl 23 ; CHECK-NEXT: movb %cl, (%esp) # 1-byte Spill 24 ; CHECK-NEXT: jmp .LBB0_2 25 ; CHECK-NEXT: .LBB0_2: # %land.end 26 ; CHECK-NEXT: movb (%esp), %al # 1-byte Reload 27 ; CHECK-NEXT: andb $1, %al 28 ; CHECK-NEXT: movb %al, {{[0-9]+}}(%esp) 29 ; CHECK-NEXT: addl $2, %esp 30 ; CHECK-NEXT: .cfi_def_cfa_offset 4 31 ; CHECK-NEXT: retl 32 entry: 33 %b = alloca i8, align 1 34 %0 = load i8, i8* @c, align 1 35 %tobool = trunc i8 %0 to i1 36 %lnot = xor i1 %tobool, true 37 br i1 %lnot, label %land.rhs, label %land.end 38 39 land.rhs: ; preds = %entry 40 br label %land.end 41 42 land.end: ; preds = %land.rhs, %entry 43 %1 = phi i1 [ false, %entry ], [ false, %land.rhs ] 44 %conv = zext i1 %1 to i8 45 store i8 %conv, i8* %b, align 1 46 ret void 47 } 48
