| ; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py |
| ; RUN: llc -mtriple=x86_64-- < %s | FileCheck %s |
| @sc8 = external dso_local global i8 |
| |
| define void @atomic_maxmin_i8() { |
| ; CHECK-LABEL: atomic_maxmin_i8: |
| ; CHECK: # %bb.0: |
| ; CHECK-NEXT: movzbl sc8(%rip), %eax |
| ; CHECK-NEXT: .p2align 4, 0x90 |
| ; CHECK-NEXT: .LBB0_1: # %atomicrmw.start |
| ; CHECK-NEXT: # =>This Inner Loop Header: Depth=1 |
| ; CHECK-NEXT: cmpb $6, %al |
| ; CHECK-NEXT: movzbl %al, %eax |
| ; CHECK-NEXT: movl $5, %ecx |
| ; CHECK-NEXT: cmovgel %eax, %ecx |
| ; CHECK-NEXT: # kill: def $al killed $al killed $eax |
| ; CHECK-NEXT: lock cmpxchgb %cl, sc8(%rip) |
| ; CHECK-NEXT: jne .LBB0_1 |
| ; CHECK-NEXT: # %bb.2: # %atomicrmw.end |
| ; CHECK-NEXT: movzbl sc8(%rip), %eax |
| ; CHECK-NEXT: .p2align 4, 0x90 |
| ; CHECK-NEXT: .LBB0_3: # %atomicrmw.start2 |
| ; CHECK-NEXT: # =>This Inner Loop Header: Depth=1 |
| ; CHECK-NEXT: cmpb $7, %al |
| ; CHECK-NEXT: movzbl %al, %eax |
| ; CHECK-NEXT: movl $6, %ecx |
| ; CHECK-NEXT: cmovll %eax, %ecx |
| ; CHECK-NEXT: # kill: def $al killed $al killed $eax |
| ; CHECK-NEXT: lock cmpxchgb %cl, sc8(%rip) |
| ; CHECK-NEXT: jne .LBB0_3 |
| ; CHECK-NEXT: # %bb.4: # %atomicrmw.end1 |
| ; CHECK-NEXT: movzbl sc8(%rip), %eax |
| ; CHECK-NEXT: .p2align 4, 0x90 |
| ; CHECK-NEXT: .LBB0_5: # %atomicrmw.start8 |
| ; CHECK-NEXT: # =>This Inner Loop Header: Depth=1 |
| ; CHECK-NEXT: cmpb $8, %al |
| ; CHECK-NEXT: movzbl %al, %eax |
| ; CHECK-NEXT: movl $7, %ecx |
| ; CHECK-NEXT: cmovael %eax, %ecx |
| ; CHECK-NEXT: # kill: def $al killed $al killed $eax |
| ; CHECK-NEXT: lock cmpxchgb %cl, sc8(%rip) |
| ; CHECK-NEXT: jne .LBB0_5 |
| ; CHECK-NEXT: # %bb.6: # %atomicrmw.end7 |
| ; CHECK-NEXT: movzbl sc8(%rip), %eax |
| ; CHECK-NEXT: .p2align 4, 0x90 |
| ; CHECK-NEXT: .LBB0_7: # %atomicrmw.start14 |
| ; CHECK-NEXT: # =>This Inner Loop Header: Depth=1 |
| ; CHECK-NEXT: cmpb $9, %al |
| ; CHECK-NEXT: movzbl %al, %eax |
| ; CHECK-NEXT: movl $8, %ecx |
| ; CHECK-NEXT: cmovbl %eax, %ecx |
| ; CHECK-NEXT: # kill: def $al killed $al killed $eax |
| ; CHECK-NEXT: lock cmpxchgb %cl, sc8(%rip) |
| ; CHECK-NEXT: jne .LBB0_7 |
| ; CHECK-NEXT: # %bb.8: # %atomicrmw.end13 |
| ; CHECK-NEXT: retq |
| %1 = atomicrmw max ptr @sc8, i8 5 acquire |
| %2 = atomicrmw min ptr @sc8, i8 6 acquire |
| %3 = atomicrmw umax ptr @sc8, i8 7 acquire |
| %4 = atomicrmw umin ptr @sc8, i8 8 acquire |
| ret void |
| } |