test/CodeGen/X86/atomic-non-integer.ll

; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc < %s -mtriple=i386-linux-generic -verify-machineinstrs -mattr=sse2 | FileCheck %s --check-prefix=X86 --check-prefix=X86-SSE
; RUN: llc < %s -mtriple=i386-linux-generic -verify-machineinstrs | FileCheck %s --check-prefix=X86 --check-prefix=X86-NOSSE
; RUN: llc < %s -mtriple=x86_64-linux-generic -verify-machineinstrs -mattr=sse2 | FileCheck %s --check-prefix=X64

; Note: This test is testing that the lowering for atomics matches what we
; currently emit for non-atomics + the atomic restriction.  The presence of
; particular lowering detail in these tests should not be read as requiring
; that detail for correctness unless it's related to the atomicity itself.
; (Specifically, there were reviewer questions about the lowering for halfs
;  and their calling convention which remain unresolved.)

define void @store_half(half* %fptr, half %v) {
; X86-SSE-LABEL: store_half:
; X86-SSE:       # %bb.0:
; X86-SSE-NEXT:    pushl %esi
; X86-SSE-NEXT:    .cfi_def_cfa_offset 8
; X86-SSE-NEXT:    subl $8, %esp
; X86-SSE-NEXT:    .cfi_def_cfa_offset 16
; X86-SSE-NEXT:    .cfi_offset %esi, -8
; X86-SSE-NEXT:    movss {{.*#+}} xmm0 = mem[0],zero,zero,zero
; X86-SSE-NEXT:    movss %xmm0, (%esp)
; X86-SSE-NEXT:    movl {{[0-9]+}}(%esp), %esi
; X86-SSE-NEXT:    calll __gnu_f2h_ieee
; X86-SSE-NEXT:    movw %ax, (%esi)
; X86-SSE-NEXT:    addl $8, %esp
; X86-SSE-NEXT:    .cfi_def_cfa_offset 8
; X86-SSE-NEXT:    popl %esi
; X86-SSE-NEXT:    .cfi_def_cfa_offset 4
; X86-SSE-NEXT:    retl
;
; X86-NOSSE-LABEL: store_half:
; X86-NOSSE:       # %bb.0:
; X86-NOSSE-NEXT:    pushl %esi
; X86-NOSSE-NEXT:    .cfi_def_cfa_offset 8
; X86-NOSSE-NEXT:    subl $8, %esp
; X86-NOSSE-NEXT:    .cfi_def_cfa_offset 16
; X86-NOSSE-NEXT:    .cfi_offset %esi, -8
; X86-NOSSE-NEXT:    flds {{[0-9]+}}(%esp)
; X86-NOSSE-NEXT:    fstps (%esp)
; X86-NOSSE-NEXT:    movl {{[0-9]+}}(%esp), %esi
; X86-NOSSE-NEXT:    calll __gnu_f2h_ieee
; X86-NOSSE-NEXT:    movw %ax, (%esi)
; X86-NOSSE-NEXT:    addl $8, %esp
; X86-NOSSE-NEXT:    .cfi_def_cfa_offset 8
; X86-NOSSE-NEXT:    popl %esi
; X86-NOSSE-NEXT:    .cfi_def_cfa_offset 4
; X86-NOSSE-NEXT:    retl
;
; X64-LABEL: store_half:
; X64:       # %bb.0:
; X64-NEXT:    pushq %rbx
; X64-NEXT:    .cfi_def_cfa_offset 16
; X64-NEXT:    .cfi_offset %rbx, -16
; X64-NEXT:    movq %rdi, %rbx
; X64-NEXT:    callq __gnu_f2h_ieee
; X64-NEXT:    movw %ax, (%rbx)
; X64-NEXT:    popq %rbx
; X64-NEXT:    .cfi_def_cfa_offset 8
; X64-NEXT:    retq
  store atomic half %v, half* %fptr unordered, align 2
  ret void
}

define void @store_float(float* %fptr, float %v) {
; X86-LABEL: store_float:
; X86:       # %bb.0:
; X86-NEXT:    movl {{[0-9]+}}(%esp), %eax
; X86-NEXT:    movl {{[0-9]+}}(%esp), %ecx
; X86-NEXT:    movl %ecx, (%eax)
; X86-NEXT:    retl
;
; X64-LABEL: store_float:
; X64:       # %bb.0:
; X64-NEXT:    movd %xmm0, %eax
; X64-NEXT:    movl %eax, (%rdi)
; X64-NEXT:    retq
  store atomic float %v, float* %fptr unordered, align 4
  ret void
}

define void @store_double(double* %fptr, double %v) {
; X86-LABEL: store_double:
; X86:       # %bb.0:
; X86-NEXT:    pushl %ebx
; X86-NEXT:    .cfi_def_cfa_offset 8
; X86-NEXT:    pushl %esi
; X86-NEXT:    .cfi_def_cfa_offset 12
; X86-NEXT:    .cfi_offset %esi, -12
; X86-NEXT:    .cfi_offset %ebx, -8
; X86-NEXT:    movl {{[0-9]+}}(%esp), %esi
; X86-NEXT:    movl {{[0-9]+}}(%esp), %ebx
; X86-NEXT:    movl {{[0-9]+}}(%esp), %ecx
; 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:    lock cmpxchg8b (%esi)
; X86-NEXT:    jne .LBB2_1
; X86-NEXT:  # %bb.2: # %atomicrmw.end
; X86-NEXT:    popl %esi
; X86-NEXT:    .cfi_def_cfa_offset 8
; X86-NEXT:    popl %ebx
; X86-NEXT:    .cfi_def_cfa_offset 4
; X86-NEXT:    retl
;
; X64-LABEL: store_double:
; X64:       # %bb.0:
; X64-NEXT:    movq %xmm0, %rax
; X64-NEXT:    movq %rax, (%rdi)
; X64-NEXT:    retq
  store atomic double %v, double* %fptr unordered, align 8
  ret void
}

define void @store_fp128(fp128* %fptr, fp128 %v) {
; X86-LABEL: store_fp128:
; X86:       # %bb.0:
; X86-NEXT:    subl $36, %esp
; X86-NEXT:    .cfi_adjust_cfa_offset 36
; X86-NEXT:    leal {{[0-9]+}}(%esp), %eax
; X86-NEXT:    pushl {{[0-9]+}}(%esp)
; X86-NEXT:    .cfi_adjust_cfa_offset 4
; X86-NEXT:    pushl {{[0-9]+}}(%esp)
; X86-NEXT:    .cfi_adjust_cfa_offset 4
; X86-NEXT:    pushl {{[0-9]+}}(%esp)
; X86-NEXT:    .cfi_adjust_cfa_offset 4
; X86-NEXT:    pushl {{[0-9]+}}(%esp)
; X86-NEXT:    .cfi_adjust_cfa_offset 4
; X86-NEXT:    pushl {{[0-9]+}}(%esp)
; X86-NEXT:    .cfi_adjust_cfa_offset 4
; X86-NEXT:    pushl %eax
; X86-NEXT:    .cfi_adjust_cfa_offset 4
; X86-NEXT:    calll __sync_lock_test_and_set_16
; X86-NEXT:    .cfi_adjust_cfa_offset -4
; X86-NEXT:    addl $56, %esp
; X86-NEXT:    .cfi_adjust_cfa_offset -56
; X86-NEXT:    retl
;
; X64-LABEL: store_fp128:
; X64:       # %bb.0:
; X64-NEXT:    pushq %rax
; X64-NEXT:    .cfi_def_cfa_offset 16
; X64-NEXT:    callq __sync_lock_test_and_set_16
; X64-NEXT:    popq %rax
; X64-NEXT:    .cfi_def_cfa_offset 8
; X64-NEXT:    retq
  store atomic fp128 %v, fp128* %fptr unordered, align 16
  ret void
}

define half @load_half(half* %fptr) {
; X86-LABEL: load_half:
; X86:       # %bb.0:
; X86-NEXT:    subl $12, %esp
; X86-NEXT:    .cfi_def_cfa_offset 16
; X86-NEXT:    movl {{[0-9]+}}(%esp), %eax
; X86-NEXT:    movzwl (%eax), %eax
; X86-NEXT:    movl %eax, (%esp)
; X86-NEXT:    calll __gnu_h2f_ieee
; X86-NEXT:    addl $12, %esp
; X86-NEXT:    .cfi_def_cfa_offset 4
; X86-NEXT:    retl
;
; X64-LABEL: load_half:
; X64:       # %bb.0:
; X64-NEXT:    pushq %rax
; X64-NEXT:    .cfi_def_cfa_offset 16
; X64-NEXT:    movzwl (%rdi), %edi
; X64-NEXT:    callq __gnu_h2f_ieee
; X64-NEXT:    popq %rax
; X64-NEXT:    .cfi_def_cfa_offset 8
; X64-NEXT:    retq
  %v = load atomic half, half* %fptr unordered, align 2
  ret half %v
}

define float @load_float(float* %fptr) {
; X86-SSE-LABEL: load_float:
; X86-SSE:       # %bb.0:
; X86-SSE-NEXT:    pushl %eax
; X86-SSE-NEXT:    .cfi_def_cfa_offset 8
; X86-SSE-NEXT:    movl {{[0-9]+}}(%esp), %eax
; X86-SSE-NEXT:    movd (%eax), %xmm0
; X86-SSE-NEXT:    movd %xmm0, (%esp)
; X86-SSE-NEXT:    flds (%esp)
; X86-SSE-NEXT:    popl %eax
; X86-SSE-NEXT:    .cfi_def_cfa_offset 4
; X86-SSE-NEXT:    retl
;
; X86-NOSSE-LABEL: load_float:
; X86-NOSSE:       # %bb.0:
; X86-NOSSE-NEXT:    pushl %eax
; X86-NOSSE-NEXT:    .cfi_def_cfa_offset 8
; X86-NOSSE-NEXT:    movl {{[0-9]+}}(%esp), %eax
; X86-NOSSE-NEXT:    movl (%eax), %eax
; X86-NOSSE-NEXT:    movl %eax, (%esp)
; X86-NOSSE-NEXT:    flds (%esp)
; X86-NOSSE-NEXT:    popl %eax
; X86-NOSSE-NEXT:    .cfi_def_cfa_offset 4
; X86-NOSSE-NEXT:    retl
;
; X64-LABEL: load_float:
; X64:       # %bb.0:
; X64-NEXT:    movd (%rdi), %xmm0
; X64-NEXT:    retq
  %v = load atomic float, float* %fptr unordered, align 4
  ret float %v
}

define double @load_double(double* %fptr) {
; X86-SSE-LABEL: load_double:
; X86-SSE:       # %bb.0:
; X86-SSE-NEXT:    pushl %ebx
; X86-SSE-NEXT:    .cfi_def_cfa_offset 8
; X86-SSE-NEXT:    pushl %esi
; X86-SSE-NEXT:    .cfi_def_cfa_offset 12
; X86-SSE-NEXT:    subl $12, %esp
; X86-SSE-NEXT:    .cfi_def_cfa_offset 24
; X86-SSE-NEXT:    .cfi_offset %esi, -12
; X86-SSE-NEXT:    .cfi_offset %ebx, -8
; X86-SSE-NEXT:    movl {{[0-9]+}}(%esp), %esi
; X86-SSE-NEXT:    xorl %eax, %eax
; X86-SSE-NEXT:    xorl %edx, %edx
; X86-SSE-NEXT:    xorl %ecx, %ecx
; X86-SSE-NEXT:    xorl %ebx, %ebx
; X86-SSE-NEXT:    lock cmpxchg8b (%esi)
; X86-SSE-NEXT:    movd %edx, %xmm0
; X86-SSE-NEXT:    movd %eax, %xmm1
; X86-SSE-NEXT:    punpckldq {{.*#+}} xmm1 = xmm1[0],xmm0[0],xmm1[1],xmm0[1]
; X86-SSE-NEXT:    movq %xmm1, (%esp)
; X86-SSE-NEXT:    fldl (%esp)
; X86-SSE-NEXT:    addl $12, %esp
; X86-SSE-NEXT:    .cfi_def_cfa_offset 12
; X86-SSE-NEXT:    popl %esi
; X86-SSE-NEXT:    .cfi_def_cfa_offset 8
; X86-SSE-NEXT:    popl %ebx
; X86-SSE-NEXT:    .cfi_def_cfa_offset 4
; X86-SSE-NEXT:    retl
;
; X86-NOSSE-LABEL: load_double:
; X86-NOSSE:       # %bb.0:
; X86-NOSSE-NEXT:    pushl %ebx
; X86-NOSSE-NEXT:    .cfi_def_cfa_offset 8
; X86-NOSSE-NEXT:    pushl %esi
; X86-NOSSE-NEXT:    .cfi_def_cfa_offset 12
; X86-NOSSE-NEXT:    subl $12, %esp
; X86-NOSSE-NEXT:    .cfi_def_cfa_offset 24
; X86-NOSSE-NEXT:    .cfi_offset %esi, -12
; X86-NOSSE-NEXT:    .cfi_offset %ebx, -8
; X86-NOSSE-NEXT:    movl {{[0-9]+}}(%esp), %esi
; X86-NOSSE-NEXT:    xorl %eax, %eax
; X86-NOSSE-NEXT:    xorl %edx, %edx
; X86-NOSSE-NEXT:    xorl %ecx, %ecx
; X86-NOSSE-NEXT:    xorl %ebx, %ebx
; X86-NOSSE-NEXT:    lock cmpxchg8b (%esi)
; X86-NOSSE-NEXT:    movl %edx, {{[0-9]+}}(%esp)
; X86-NOSSE-NEXT:    movl %eax, (%esp)
; X86-NOSSE-NEXT:    fldl (%esp)
; X86-NOSSE-NEXT:    addl $12, %esp
; X86-NOSSE-NEXT:    .cfi_def_cfa_offset 12
; X86-NOSSE-NEXT:    popl %esi
; X86-NOSSE-NEXT:    .cfi_def_cfa_offset 8
; X86-NOSSE-NEXT:    popl %ebx
; X86-NOSSE-NEXT:    .cfi_def_cfa_offset 4
; X86-NOSSE-NEXT:    retl
;
; X64-LABEL: load_double:
; X64:       # %bb.0:
; X64-NEXT:    movq (%rdi), %xmm0
; X64-NEXT:    retq
  %v = load atomic double, double* %fptr unordered, align 8
  ret double %v
}

define fp128 @load_fp128(fp128* %fptr) {
; X86-LABEL: load_fp128:
; X86:       # %bb.0:
; X86-NEXT:    pushl %edi
; X86-NEXT:    .cfi_def_cfa_offset 8
; X86-NEXT:    pushl %esi
; X86-NEXT:    .cfi_def_cfa_offset 12
; X86-NEXT:    subl $20, %esp
; X86-NEXT:    .cfi_def_cfa_offset 32
; X86-NEXT:    .cfi_offset %esi, -12
; X86-NEXT:    .cfi_offset %edi, -8
; X86-NEXT:    movl {{[0-9]+}}(%esp), %esi
; X86-NEXT:    subl $8, %esp
; X86-NEXT:    .cfi_adjust_cfa_offset 8
; X86-NEXT:    leal {{[0-9]+}}(%esp), %eax
; X86-NEXT:    pushl $0
; X86-NEXT:    .cfi_adjust_cfa_offset 4
; X86-NEXT:    pushl $0
; X86-NEXT:    .cfi_adjust_cfa_offset 4
; X86-NEXT:    pushl $0
; X86-NEXT:    .cfi_adjust_cfa_offset 4
; X86-NEXT:    pushl $0
; X86-NEXT:    .cfi_adjust_cfa_offset 4
; X86-NEXT:    pushl $0
; X86-NEXT:    .cfi_adjust_cfa_offset 4
; X86-NEXT:    pushl $0
; X86-NEXT:    .cfi_adjust_cfa_offset 4
; X86-NEXT:    pushl $0
; X86-NEXT:    .cfi_adjust_cfa_offset 4
; X86-NEXT:    pushl $0
; X86-NEXT:    .cfi_adjust_cfa_offset 4
; X86-NEXT:    pushl {{[0-9]+}}(%esp)
; X86-NEXT:    .cfi_adjust_cfa_offset 4
; X86-NEXT:    pushl %eax
; X86-NEXT:    .cfi_adjust_cfa_offset 4
; X86-NEXT:    calll __sync_val_compare_and_swap_16
; X86-NEXT:    .cfi_adjust_cfa_offset -4
; X86-NEXT:    addl $44, %esp
; X86-NEXT:    .cfi_adjust_cfa_offset -44
; 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:    addl $20, %esp
; X86-NEXT:    .cfi_def_cfa_offset 12
; X86-NEXT:    popl %esi
; X86-NEXT:    .cfi_def_cfa_offset 8
; X86-NEXT:    popl %edi
; X86-NEXT:    .cfi_def_cfa_offset 4
; X86-NEXT:    retl $4
;
; X64-LABEL: load_fp128:
; X64:       # %bb.0:
; X64-NEXT:    pushq %rax
; X64-NEXT:    .cfi_def_cfa_offset 16
; X64-NEXT:    xorl %esi, %esi
; X64-NEXT:    xorl %edx, %edx
; X64-NEXT:    xorl %ecx, %ecx
; X64-NEXT:    xorl %r8d, %r8d
; X64-NEXT:    callq __sync_val_compare_and_swap_16
; X64-NEXT:    popq %rcx
; X64-NEXT:    .cfi_def_cfa_offset 8
; X64-NEXT:    retq
  %v = load atomic fp128, fp128* %fptr unordered, align 16
  ret fp128 %v
}


; sanity check the seq_cst lowering since that's the
; interesting one from an ordering perspective on x86.

define void @store_float_seq_cst(float* %fptr, float %v) {
; X86-LABEL: store_float_seq_cst:
; X86:       # %bb.0:
; X86-NEXT:    movl {{[0-9]+}}(%esp), %eax
; X86-NEXT:    movl {{[0-9]+}}(%esp), %ecx
; X86-NEXT:    xchgl %ecx, (%eax)
; X86-NEXT:    retl
;
; X64-LABEL: store_float_seq_cst:
; X64:       # %bb.0:
; X64-NEXT:    movd %xmm0, %eax
; X64-NEXT:    xchgl %eax, (%rdi)
; X64-NEXT:    retq
  store atomic float %v, float* %fptr seq_cst, align 4
  ret void
}

define void @store_double_seq_cst(double* %fptr, double %v) {
; X86-LABEL: store_double_seq_cst:
; X86:       # %bb.0:
; X86-NEXT:    pushl %ebx
; X86-NEXT:    .cfi_def_cfa_offset 8
; X86-NEXT:    pushl %esi
; X86-NEXT:    .cfi_def_cfa_offset 12
; X86-NEXT:    .cfi_offset %esi, -12
; X86-NEXT:    .cfi_offset %ebx, -8
; X86-NEXT:    movl {{[0-9]+}}(%esp), %esi
; X86-NEXT:    movl {{[0-9]+}}(%esp), %ebx
; X86-NEXT:    movl {{[0-9]+}}(%esp), %ecx
; X86-NEXT:    movl (%esi), %eax
; X86-NEXT:    movl 4(%esi), %edx
; X86-NEXT:    .p2align 4, 0x90
; X86-NEXT:  .LBB9_1: # %atomicrmw.start
; X86-NEXT:    # =>This Inner Loop Header: Depth=1
; X86-NEXT:    lock cmpxchg8b (%esi)
; X86-NEXT:    jne .LBB9_1
; X86-NEXT:  # %bb.2: # %atomicrmw.end
; X86-NEXT:    popl %esi
; X86-NEXT:    .cfi_def_cfa_offset 8
; X86-NEXT:    popl %ebx
; X86-NEXT:    .cfi_def_cfa_offset 4
; X86-NEXT:    retl
;
; X64-LABEL: store_double_seq_cst:
; X64:       # %bb.0:
; X64-NEXT:    movq %xmm0, %rax
; X64-NEXT:    xchgq %rax, (%rdi)
; X64-NEXT:    retq
  store atomic double %v, double* %fptr seq_cst, align 8
  ret void
}

define float @load_float_seq_cst(float* %fptr) {
; X86-SSE-LABEL: load_float_seq_cst:
; X86-SSE:       # %bb.0:
; X86-SSE-NEXT:    pushl %eax
; X86-SSE-NEXT:    .cfi_def_cfa_offset 8
; X86-SSE-NEXT:    movl {{[0-9]+}}(%esp), %eax
; X86-SSE-NEXT:    movl (%eax), %eax
; X86-SSE-NEXT:    movd %eax, %xmm0
; X86-SSE-NEXT:    movd %xmm0, (%esp)
; X86-SSE-NEXT:    flds (%esp)
; X86-SSE-NEXT:    popl %eax
; X86-SSE-NEXT:    .cfi_def_cfa_offset 4
; X86-SSE-NEXT:    retl
;
; X86-NOSSE-LABEL: load_float_seq_cst:
; X86-NOSSE:       # %bb.0:
; X86-NOSSE-NEXT:    pushl %eax
; X86-NOSSE-NEXT:    .cfi_def_cfa_offset 8
; X86-NOSSE-NEXT:    movl {{[0-9]+}}(%esp), %eax
; X86-NOSSE-NEXT:    movl (%eax), %eax
; X86-NOSSE-NEXT:    movl %eax, (%esp)
; X86-NOSSE-NEXT:    flds (%esp)
; X86-NOSSE-NEXT:    popl %eax
; X86-NOSSE-NEXT:    .cfi_def_cfa_offset 4
; X86-NOSSE-NEXT:    retl
;
; X64-LABEL: load_float_seq_cst:
; X64:       # %bb.0:
; X64-NEXT:    movl (%rdi), %eax
; X64-NEXT:    movd %eax, %xmm0
; X64-NEXT:    retq
  %v = load atomic float, float* %fptr seq_cst, align 4
  ret float %v
}

define double @load_double_seq_cst(double* %fptr) {
; X86-SSE-LABEL: load_double_seq_cst:
; X86-SSE:       # %bb.0:
; X86-SSE-NEXT:    pushl %ebx
; X86-SSE-NEXT:    .cfi_def_cfa_offset 8
; X86-SSE-NEXT:    pushl %esi
; X86-SSE-NEXT:    .cfi_def_cfa_offset 12
; X86-SSE-NEXT:    subl $12, %esp
; X86-SSE-NEXT:    .cfi_def_cfa_offset 24
; X86-SSE-NEXT:    .cfi_offset %esi, -12
; X86-SSE-NEXT:    .cfi_offset %ebx, -8
; X86-SSE-NEXT:    movl {{[0-9]+}}(%esp), %esi
; X86-SSE-NEXT:    xorl %eax, %eax
; X86-SSE-NEXT:    xorl %edx, %edx
; X86-SSE-NEXT:    xorl %ecx, %ecx
; X86-SSE-NEXT:    xorl %ebx, %ebx
; X86-SSE-NEXT:    lock cmpxchg8b (%esi)
; X86-SSE-NEXT:    movd %edx, %xmm0
; X86-SSE-NEXT:    movd %eax, %xmm1
; X86-SSE-NEXT:    punpckldq {{.*#+}} xmm1 = xmm1[0],xmm0[0],xmm1[1],xmm0[1]
; X86-SSE-NEXT:    movq %xmm1, (%esp)
; X86-SSE-NEXT:    fldl (%esp)
; X86-SSE-NEXT:    addl $12, %esp
; X86-SSE-NEXT:    .cfi_def_cfa_offset 12
; X86-SSE-NEXT:    popl %esi
; X86-SSE-NEXT:    .cfi_def_cfa_offset 8
; X86-SSE-NEXT:    popl %ebx
; X86-SSE-NEXT:    .cfi_def_cfa_offset 4
; X86-SSE-NEXT:    retl
;
; X86-NOSSE-LABEL: load_double_seq_cst:
; X86-NOSSE:       # %bb.0:
; X86-NOSSE-NEXT:    pushl %ebx
; X86-NOSSE-NEXT:    .cfi_def_cfa_offset 8
; X86-NOSSE-NEXT:    pushl %esi
; X86-NOSSE-NEXT:    .cfi_def_cfa_offset 12
; X86-NOSSE-NEXT:    subl $12, %esp
; X86-NOSSE-NEXT:    .cfi_def_cfa_offset 24
; X86-NOSSE-NEXT:    .cfi_offset %esi, -12
; X86-NOSSE-NEXT:    .cfi_offset %ebx, -8
; X86-NOSSE-NEXT:    movl {{[0-9]+}}(%esp), %esi
; X86-NOSSE-NEXT:    xorl %eax, %eax
; X86-NOSSE-NEXT:    xorl %edx, %edx
; X86-NOSSE-NEXT:    xorl %ecx, %ecx
; X86-NOSSE-NEXT:    xorl %ebx, %ebx
; X86-NOSSE-NEXT:    lock cmpxchg8b (%esi)
; X86-NOSSE-NEXT:    movl %edx, {{[0-9]+}}(%esp)
; X86-NOSSE-NEXT:    movl %eax, (%esp)
; X86-NOSSE-NEXT:    fldl (%esp)
; X86-NOSSE-NEXT:    addl $12, %esp
; X86-NOSSE-NEXT:    .cfi_def_cfa_offset 12
; X86-NOSSE-NEXT:    popl %esi
; X86-NOSSE-NEXT:    .cfi_def_cfa_offset 8
; X86-NOSSE-NEXT:    popl %ebx
; X86-NOSSE-NEXT:    .cfi_def_cfa_offset 4
; X86-NOSSE-NEXT:    retl
;
; X64-LABEL: load_double_seq_cst:
; X64:       # %bb.0:
; X64-NEXT:    movq (%rdi), %rax
; X64-NEXT:    movq %rax, %xmm0
; X64-NEXT:    retq
  %v = load atomic double, double* %fptr seq_cst, align 8
  ret double %v
}