| ; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py |
| ;RUN: llc < %s -mtriple=x86_64-unknown-linux-gnu -mattr=slow-incdec | FileCheck %s |
| |
| @var_21 = external constant i32, align 4 |
| @var_29 = external constant i8, align 1 |
| @var_390 = external global i32, align 4 |
| @var_11 = external constant i8, align 1 |
| @var_370 = external global i8, align 1 |
| |
| ; Function Attrs: noinline nounwind optnone uwtable |
| define void @_Z3foov() { |
| ; CHECK-LABEL: _Z3foov: |
| ; CHECK: # %bb.0: # %entry |
| ; CHECK-NEXT: movsbl {{.*}}(%rip), %eax |
| ; CHECK-NEXT: negl %eax |
| ; CHECK-NEXT: xorl %ecx, %ecx |
| ; CHECK-NEXT: cmpl %eax, {{.*}}(%rip) |
| ; CHECK-NEXT: setb %cl |
| ; CHECK-NEXT: movl %ecx, {{.*}}(%rip) |
| ; CHECK-NEXT: movb {{.*}}(%rip), %al |
| ; CHECK-NEXT: movb %al, {{.*}}(%rip) |
| ; CHECK-NEXT: retq |
| entry: |
| %0 = load i32, i32* @var_21, align 4 |
| %1 = load i8, i8* @var_29, align 1 |
| %conv = sext i8 %1 to i32 |
| %sub = sub nsw i32 0, %conv |
| %cmp = icmp ult i32 %0, %sub |
| %conv1 = zext i1 %cmp to i32 |
| %add = add nsw i32 %conv1, -1 |
| %conv2 = trunc i32 %add to i8 |
| %tobool = icmp ne i8 %conv2, 0 |
| %lnot = xor i1 %tobool, true |
| %conv3 = zext i1 %lnot to i32 |
| store i32 %conv3, i32* @var_390, align 4 |
| %2 = load i8, i8* @var_11, align 1 |
| %conv4 = sext i8 %2 to i16 |
| %conv5 = trunc i16 %conv4 to i8 |
| store i8 %conv5, i8* @var_370, align 1 |
| ret void |
| } |