| ; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py |
| ; RUN: llc -mtriple=x86_64-- < %s | FileCheck %s |
| @sc8 = external global i8 |
| |
| define void @atomic_maxmin_i8() { |
| ; CHECK-LABEL: atomic_maxmin_i8: |
| ; CHECK: # %bb.0: |
| ; CHECK-NEXT: movb {{.*}}(%rip), %al |
| ; CHECK-NEXT: .p2align 4, 0x90 |
| ; CHECK-NEXT: .LBB0_1: # %atomicrmw.start |
| ; CHECK-NEXT: # =>This Inner Loop Header: Depth=1 |
| ; CHECK-NEXT: cmpb $4, %al |
| ; CHECK-NEXT: movl %eax, %ecx |
| ; CHECK-NEXT: jg .LBB0_3 |
| ; CHECK-NEXT: # %bb.2: # %atomicrmw.start |
| ; CHECK-NEXT: # in Loop: Header=BB0_1 Depth=1 |
| ; CHECK-NEXT: movb $5, %cl |
| ; CHECK-NEXT: .LBB0_3: # %atomicrmw.start |
| ; CHECK-NEXT: # in Loop: Header=BB0_1 Depth=1 |
| ; CHECK-NEXT: lock cmpxchgb %cl, {{.*}}(%rip) |
| ; CHECK-NEXT: jne .LBB0_1 |
| ; CHECK-NEXT: # %bb.4: # %atomicrmw.end |
| ; CHECK-NEXT: movb {{.*}}(%rip), %al |
| ; CHECK-NEXT: .p2align 4, 0x90 |
| ; CHECK-NEXT: .LBB0_5: # %atomicrmw.start2 |
| ; CHECK-NEXT: # =>This Inner Loop Header: Depth=1 |
| ; CHECK-NEXT: cmpb $7, %al |
| ; CHECK-NEXT: movl %eax, %ecx |
| ; CHECK-NEXT: jl .LBB0_7 |
| ; CHECK-NEXT: # %bb.6: # %atomicrmw.start2 |
| ; CHECK-NEXT: # in Loop: Header=BB0_5 Depth=1 |
| ; CHECK-NEXT: movb $6, %cl |
| ; CHECK-NEXT: .LBB0_7: # %atomicrmw.start2 |
| ; CHECK-NEXT: # in Loop: Header=BB0_5 Depth=1 |
| ; CHECK-NEXT: lock cmpxchgb %cl, {{.*}}(%rip) |
| ; CHECK-NEXT: jne .LBB0_5 |
| ; CHECK-NEXT: # %bb.8: # %atomicrmw.end1 |
| ; CHECK-NEXT: movb {{.*}}(%rip), %al |
| ; CHECK-NEXT: .p2align 4, 0x90 |
| ; CHECK-NEXT: .LBB0_9: # %atomicrmw.start8 |
| ; CHECK-NEXT: # =>This Inner Loop Header: Depth=1 |
| ; CHECK-NEXT: cmpb $7, %al |
| ; CHECK-NEXT: movl %eax, %ecx |
| ; CHECK-NEXT: ja .LBB0_11 |
| ; CHECK-NEXT: # %bb.10: # %atomicrmw.start8 |
| ; CHECK-NEXT: # in Loop: Header=BB0_9 Depth=1 |
| ; CHECK-NEXT: movb $7, %cl |
| ; CHECK-NEXT: .LBB0_11: # %atomicrmw.start8 |
| ; CHECK-NEXT: # in Loop: Header=BB0_9 Depth=1 |
| ; CHECK-NEXT: lock cmpxchgb %cl, {{.*}}(%rip) |
| ; CHECK-NEXT: jne .LBB0_9 |
| ; CHECK-NEXT: # %bb.12: # %atomicrmw.end7 |
| ; CHECK-NEXT: movb {{.*}}(%rip), %al |
| ; CHECK-NEXT: .p2align 4, 0x90 |
| ; CHECK-NEXT: .LBB0_13: # %atomicrmw.start14 |
| ; CHECK-NEXT: # =>This Inner Loop Header: Depth=1 |
| ; CHECK-NEXT: cmpb $9, %al |
| ; CHECK-NEXT: movl %eax, %ecx |
| ; CHECK-NEXT: jb .LBB0_15 |
| ; CHECK-NEXT: # %bb.14: # %atomicrmw.start14 |
| ; CHECK-NEXT: # in Loop: Header=BB0_13 Depth=1 |
| ; CHECK-NEXT: movb $8, %cl |
| ; CHECK-NEXT: .LBB0_15: # %atomicrmw.start14 |
| ; CHECK-NEXT: # in Loop: Header=BB0_13 Depth=1 |
| ; CHECK-NEXT: lock cmpxchgb %cl, {{.*}}(%rip) |
| ; CHECK-NEXT: jne .LBB0_13 |
| ; CHECK-NEXT: # %bb.16: # %atomicrmw.end13 |
| ; CHECK-NEXT: retq |
| %1 = atomicrmw max i8* @sc8, i8 5 acquire |
| %2 = atomicrmw min i8* @sc8, i8 6 acquire |
| %3 = atomicrmw umax i8* @sc8, i8 7 acquire |
| %4 = atomicrmw umin i8* @sc8, i8 8 acquire |
| ret void |
| } |