test/CodeGen/X86/atomic-xor.ll

; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc < %s -mtriple=i686-unknown-unknown | FileCheck %s --check-prefix=X86
; RUN: llc < %s -mtriple=x86_64-unknown-unknown | FileCheck %s --check-prefix=X64

define void @xor32_signbit_unused(ptr %p) nounwind {
; X86-LABEL: xor32_signbit_unused:
; X86:       # %bb.0:
; X86-NEXT:    movl {{[0-9]+}}(%esp), %eax
; X86-NEXT:    lock xorl $-2147483648, (%eax) # imm = 0x80000000
; X86-NEXT:    retl
;
; X64-LABEL: xor32_signbit_unused:
; X64:       # %bb.0:
; X64-NEXT:    lock xorl $-2147483648, (%rdi) # imm = 0x80000000
; X64-NEXT:    retq
  %r = atomicrmw xor ptr %p, i32 2147483648 monotonic
  ret void
}

define i128 @xor128_signbit_used(ptr %p) nounwind {
; X86-LABEL: xor128_signbit_used:
; X86:       # %bb.0:
; X86-NEXT:    pushl %ebp
; X86-NEXT:    movl %esp, %ebp
; X86-NEXT:    pushl %edi
; X86-NEXT:    pushl %esi
; X86-NEXT:    andl $-8, %esp
; X86-NEXT:    subl $16, %esp
; X86-NEXT:    movl 8(%ebp), %esi
; X86-NEXT:    movl %esp, %eax
; X86-NEXT:    pushl $-2147483648 # imm = 0x80000000
; X86-NEXT:    pushl $0
; X86-NEXT:    pushl $0
; X86-NEXT:    pushl $0
; X86-NEXT:    pushl 12(%ebp)
; X86-NEXT:    pushl %eax
; X86-NEXT:    calll __sync_fetch_and_xor_16
; X86-NEXT:    addl $20, %esp
; X86-NEXT:    movl (%esp), %eax
; X86-NEXT:    movl {{[0-9]+}}(%esp), %ecx
; X86-NEXT:    movl {{[0-9]+}}(%esp), %edx
; X86-NEXT:    movl {{[0-9]+}}(%esp), %edi
; X86-NEXT:    movl %edi, 8(%esi)
; X86-NEXT:    movl %edx, 12(%esi)
; X86-NEXT:    movl %eax, (%esi)
; X86-NEXT:    movl %ecx, 4(%esi)
; X86-NEXT:    movl %esi, %eax
; X86-NEXT:    leal -8(%ebp), %esp
; X86-NEXT:    popl %esi
; X86-NEXT:    popl %edi
; X86-NEXT:    popl %ebp
; X86-NEXT:    retl $4
;
; X64-LABEL: xor128_signbit_used:
; X64:       # %bb.0:
; X64-NEXT:    pushq %rax
; X64-NEXT:    movabsq $-9223372036854775808, %rdx # imm = 0x8000000000000000
; X64-NEXT:    xorl %esi, %esi
; X64-NEXT:    callq __sync_fetch_and_xor_16@PLT
; X64-NEXT:    popq %rcx
; X64-NEXT:    retq
  %r = atomicrmw xor ptr %p, i128 170141183460469231731687303715884105728 monotonic
  ret i128 %r
}

define i64 @xor64_signbit_used(ptr %p) nounwind {
; X86-LABEL: xor64_signbit_used:
; X86:       # %bb.0:
; X86-NEXT:    pushl %ebx
; X86-NEXT:    pushl %esi
; X86-NEXT:    movl {{[0-9]+}}(%esp), %esi
; X86-NEXT:    movl (%esi), %eax
; X86-NEXT:    movl 4(%esi), %edx
; X86-NEXT:    .p2align 4, 0x90
; X86-NEXT:  .LBB2_1: # %atomicrmw.start
; X86-NEXT:    # =>This Inner Loop Header: Depth=1
; X86-NEXT:    leal -2147483648(%edx), %ecx
; X86-NEXT:    movl %eax, %ebx
; X86-NEXT:    lock cmpxchg8b (%esi)
; X86-NEXT:    jne .LBB2_1
; X86-NEXT:  # %bb.2: # %atomicrmw.end
; X86-NEXT:    popl %esi
; X86-NEXT:    popl %ebx
; X86-NEXT:    retl
;
; X64-LABEL: xor64_signbit_used:
; X64:       # %bb.0:
; X64-NEXT:    movabsq $-9223372036854775808, %rax # imm = 0x8000000000000000
; X64-NEXT:    lock xaddq %rax, (%rdi)
; X64-NEXT:    retq
  %r = atomicrmw xor ptr %p, i64 9223372036854775808 monotonic
  ret i64 %r
}

define i32 @xor32_signbit_used(ptr %p) nounwind {
; X86-LABEL: xor32_signbit_used:
; X86:       # %bb.0:
; X86-NEXT:    movl {{[0-9]+}}(%esp), %ecx
; X86-NEXT:    movl $-2147483648, %eax # imm = 0x80000000
; X86-NEXT:    lock xaddl %eax, (%ecx)
; X86-NEXT:    retl
;
; X64-LABEL: xor32_signbit_used:
; X64:       # %bb.0:
; X64-NEXT:    movl $-2147483648, %eax # imm = 0x80000000
; X64-NEXT:    lock xaddl %eax, (%rdi)
; X64-NEXT:    retq
  %r = atomicrmw xor ptr %p, i32 2147483648 monotonic
  ret i32 %r
}

define i16 @xor16_signbit_used(ptr %p) nounwind {
; X86-LABEL: xor16_signbit_used:
; X86:       # %bb.0:
; X86-NEXT:    movl {{[0-9]+}}(%esp), %ecx
; X86-NEXT:    movw $-32768, %ax # imm = 0x8000
; X86-NEXT:    lock xaddw %ax, (%ecx)
; X86-NEXT:    retl
;
; X64-LABEL: xor16_signbit_used:
; X64:       # %bb.0:
; X64-NEXT:    movw $-32768, %ax # imm = 0x8000
; X64-NEXT:    lock xaddw %ax, (%rdi)
; X64-NEXT:    retq
  %r = atomicrmw xor ptr %p, i16 32768 monotonic
  ret i16 %r
}

define i8 @xor8_signbit_used(ptr %p) nounwind {
; X86-LABEL: xor8_signbit_used:
; X86:       # %bb.0:
; X86-NEXT:    movl {{[0-9]+}}(%esp), %ecx
; X86-NEXT:    movb $-128, %al
; X86-NEXT:    lock xaddb %al, (%ecx)
; X86-NEXT:    retl
;
; X64-LABEL: xor8_signbit_used:
; X64:       # %bb.0:
; X64-NEXT:    movb $-128, %al
; X64-NEXT:    lock xaddb %al, (%rdi)
; X64-NEXT:    retq
  %r = atomicrmw xor ptr %p, i8 128 monotonic
  ret i8 %r
}

define i32 @xor32_not_signbit_used(ptr %p) nounwind {
; X86-LABEL: xor32_not_signbit_used:
; X86:       # %bb.0:
; X86-NEXT:    movl {{[0-9]+}}(%esp), %ecx
; X86-NEXT:    movl (%ecx), %eax
; X86-NEXT:    .p2align 4, 0x90
; X86-NEXT:  .LBB6_1: # %atomicrmw.start
; X86-NEXT:    # =>This Inner Loop Header: Depth=1
; X86-NEXT:    movl %eax, %edx
; X86-NEXT:    xorl $-2147483647, %edx # imm = 0x80000001
; X86-NEXT:    lock cmpxchgl %edx, (%ecx)
; X86-NEXT:    jne .LBB6_1
; X86-NEXT:  # %bb.2: # %atomicrmw.end
; X86-NEXT:    retl
;
; X64-LABEL: xor32_not_signbit_used:
; X64:       # %bb.0:
; X64-NEXT:    movl (%rdi), %eax
; X64-NEXT:    .p2align 4, 0x90
; X64-NEXT:  .LBB6_1: # %atomicrmw.start
; X64-NEXT:    # =>This Inner Loop Header: Depth=1
; X64-NEXT:    movl %eax, %ecx
; X64-NEXT:    xorl $-2147483647, %ecx # imm = 0x80000001
; X64-NEXT:    lock cmpxchgl %ecx, (%rdi)
; X64-NEXT:    jne .LBB6_1
; X64-NEXT:  # %bb.2: # %atomicrmw.end
; X64-NEXT:    retq
  %r = atomicrmw xor ptr %p, i32 2147483649 monotonic
  ret i32 %r
}