| // RUN: %clang_cc1 %s -triple=amdgcn-amd-amdhsa -fcuda-is-device \ |
| // RUN: -target-cpu gfx90a -Rpass=atomic-expand -S -o - 2>&1 | \ |
| // RUN: FileCheck %s --check-prefix=GFX90A-CAS |
| |
| // REQUIRES: amdgpu-registered-target |
| |
| #include "Inputs/cuda.h" |
| #include <stdatomic.h> |
| |
| // GFX90A-CAS: A compare and swap loop was generated for an atomic fadd operation at system memory scope |
| // GFX90A-CAS-LABEL: _Z14atomic_add_casPf |
| // GFX90A-CAS: flat_atomic_cmpswap v0, v[2:3], v[4:5] glc |
| // GFX90A-CAS: s_cbranch_execnz |
| __device__ float atomic_add_cas(float *p) { |
| return __atomic_fetch_add(p, 1.0f, memory_order_relaxed); |
| } |
