[llvm-branch-commits] [clang] [llvm] clang/AMDGPU: Emit atomicrmw from ds_fadd builtins (PR #95395)

[Yaxun Liu via llvm-branch-commits]

================
@@ -117,13 +117,44 @@ void test_update_dpp(global int* out, int arg1, int arg2)
 }
 
 // CHECK-LABEL: @test_ds_fadd
-// CHECK: {{.*}}call{{.*}} float @llvm.amdgcn.ds.fadd.f32(ptr addrspace(3) 
%out, float %src, i32 0, i32 0, i1 false)
+// CHECK: atomicrmw fadd ptr addrspace(3) %out, float %src monotonic, align 
4{{$}}
+// CHECK: atomicrmw volatile fadd ptr addrspace(3) %out, float %src monotonic, 
align 4{{$}}
+
+// CHECK: atomicrmw fadd ptr addrspace(3) %out, float %src acquire, align 
4{{$}}
+// CHECK: atomicrmw fadd ptr addrspace(3) %out, float %src acquire, align 
4{{$}}
+// CHECK: atomicrmw fadd ptr addrspace(3) %out, float %src release, align 
4{{$}}
+// CHECK: atomicrmw fadd ptr addrspace(3) %out, float %src acq_rel, align 
4{{$}}
+// CHECK: atomicrmw fadd ptr addrspace(3) %out, float %src seq_cst, align 
4{{$}}
+// CHECK: atomicrmw fadd ptr addrspace(3) %out, float %src seq_cst, align 
4{{$}}
+
+// CHECK: atomicrmw fadd ptr addrspace(3) %out, float %src syncscope("agent") 
monotonic, align 4{{$}}
+// CHECK: atomicrmw fadd ptr addrspace(3) %out, float %src 
syncscope("workgroup") monotonic, align 4{{$}}
+// CHECK: atomicrmw fadd ptr addrspace(3) %out, float %src 
syncscope("wavefront") monotonic, align 4{{$}}
+// CHECK: atomicrmw fadd ptr addrspace(3) %out, float %src 
syncscope("singlethread") monotonic, align 4{{$}}
+// CHECK: atomicrmw fadd ptr addrspace(3) %out, float %src monotonic, align 
4{{$}}
 #if !defined(__SPIRV__)
 void test_ds_faddf(local float *out, float src) {
 #else
-void test_ds_faddf(__attribute__((address_space(3))) float *out, float src) {
+  void test_ds_faddf(__attribute__((address_space(3))) float *out, float src) {
 #endif
+
   *out = __builtin_amdgcn_ds_faddf(out, src, 0, 0, false);
+  *out = __builtin_amdgcn_ds_faddf(out, src, 0, 0, true);
+
+  // Test all orders.
+  *out = __builtin_amdgcn_ds_faddf(out, src, 1, 0, false);
----------------
yxsamliu wrote:

better use predefined macros
```
  // Define macros for the C11 / C++11 memory orderings
  Builder.defineMacro("__ATOMIC_RELAXED", "0");
  Builder.defineMacro("__ATOMIC_CONSUME", "1");
  Builder.defineMacro("__ATOMIC_ACQUIRE", "2");
  Builder.defineMacro("__ATOMIC_RELEASE", "3");
  Builder.defineMacro("__ATOMIC_ACQ_REL", "4");
  Builder.defineMacro("__ATOMIC_SEQ_CST", "5");

  // Define macros for the clang atomic scopes.
  Builder.defineMacro("__MEMORY_SCOPE_SYSTEM", "0");
  Builder.defineMacro("__MEMORY_SCOPE_DEVICE", "1");
  Builder.defineMacro("__MEMORY_SCOPE_WRKGRP", "2");
  Builder.defineMacro("__MEMORY_SCOPE_WVFRNT", "3");
  Builder.defineMacro("__MEMORY_SCOPE_SINGLE", "4");

```

https://github.com/llvm/llvm-project/pull/95395
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