; RUN: llc < %s -mtriple=x86_64-linux-generic -verify-machineinstrs -mattr=sse2 | FileCheck %s ; 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) { ; CHECK-LABEL: @store_half ; CHECK: movq %rdi, %rbx ; CHECK: callq __gnu_f2h_ieee ; CHECK: movw %ax, (%rbx) store atomic half %v, half* %fptr unordered, align 2 ret void } define void @store_float(float* %fptr, float %v) { ; CHECK-LABEL: @store_float ; CHECK: movd %xmm0, %eax ; CHECK: movl %eax, (%rdi) store atomic float %v, float* %fptr unordered, align 4 ret void } define void @store_double(double* %fptr, double %v) { ; CHECK-LABEL: @store_double ; CHECK: movd %xmm0, %rax ; CHECK: movq %rax, (%rdi) store atomic double %v, double* %fptr unordered, align 8 ret void } define void @store_fp128(fp128* %fptr, fp128 %v) { ; CHECK-LABEL: @store_fp128 ; CHECK: callq __sync_lock_test_and_set_16 store atomic fp128 %v, fp128* %fptr unordered, align 16 ret void } define half @load_half(half* %fptr) { ; CHECK-LABEL: @load_half ; CHECK: movw (%rdi), %ax ; CHECK: movzwl %ax, %edi ; CHECK: jmp __gnu_h2f_ieee %v = load atomic half, half* %fptr unordered, align 2 ret half %v } define float @load_float(float* %fptr) { ; CHECK-LABEL: @load_float ; CHECK: movl (%rdi), %eax ; CHECK: movd %eax, %xmm0 %v = load atomic float, float* %fptr unordered, align 4 ret float %v } define double @load_double(double* %fptr) { ; CHECK-LABEL: @load_double ; CHECK: movq (%rdi), %rax ; CHECK: movd %rax, %xmm0 %v = load atomic double, double* %fptr unordered, align 8 ret double %v } define fp128 @load_fp128(fp128* %fptr) { ; CHECK-LABEL: @load_fp128 ; CHECK: callq __sync_val_compare_and_swap_16 %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) { ; CHECK-LABEL: @store_float_seq_cst ; CHECK: movd %xmm0, %eax ; CHECK: xchgl %eax, (%rdi) store atomic float %v, float* %fptr seq_cst, align 4 ret void } define void @store_double_seq_cst(double* %fptr, double %v) { ; CHECK-LABEL: @store_double_seq_cst ; CHECK: movd %xmm0, %rax ; CHECK: xchgq %rax, (%rdi) store atomic double %v, double* %fptr seq_cst, align 8 ret void } define float @load_float_seq_cst(float* %fptr) { ; CHECK-LABEL: @load_float_seq_cst ; CHECK: movl (%rdi), %eax ; CHECK: movd %eax, %xmm0 %v = load atomic float, float* %fptr seq_cst, align 4 ret float %v } define double @load_double_seq_cst(double* %fptr) { ; CHECK-LABEL: @load_double_seq_cst ; CHECK: movq (%rdi), %rax ; CHECK: movd %rax, %xmm0 %v = load atomic double, double* %fptr seq_cst, align 8 ret double %v }