[clang] [CIR][AMDGPU] Implement the clang::atomic statement attribute (PR #225364)

[Steffen Larsen via cfe-commits]

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@@ -1223,21 +1224,52 @@ getLLVMMemOrder(std::optional<cir::MemOrder> memorder) {
   llvm_unreachable("unknown memory order");
 }
 
-static llvm::StringRef getLLVMSyncScope(cir::SyncScopeKind syncScope) {
+static bool isNVPTXTriple(mlir::Operation *op) {
+  auto moduleOp = op->getParentOfType<mlir::ModuleOp>();
+  if (!moduleOp)
+    return false;
+  if (auto tripleAttr = moduleOp->getAttrOfType<mlir::StringAttr>(
+          cir::CIRDialect::getTripleAttrName()))
+    return llvm::Triple(tripleAttr.getValue()).isNVPTX();
+  return false;
+}
+
+static llvm::StringRef getLLVMSyncScope(cir::SyncScopeKind syncScope,
+                                        mlir::Operation *op) {
   switch (syncScope) {
   case cir::SyncScopeKind::SingleThread:
+  case cir::SyncScopeKind::HIPSingleThread:
     return "singlethread";
-  case cir::SyncScopeKind::Workgroup:
-    return "block";
-  default:
+  case cir::SyncScopeKind::System:
+  case cir::SyncScopeKind::HIPSystem:
+  case cir::SyncScopeKind::OpenCLAllSVMDevices:
     return "";
-  }
+  case cir::SyncScopeKind::Device:
+  case cir::SyncScopeKind::HIPAgent:
+  case cir::SyncScopeKind::OpenCLDevice:
+    return "agent";
+  case cir::SyncScopeKind::Workgroup:
+  case cir::SyncScopeKind::HIPWorkgroup:
+  case cir::SyncScopeKind::OpenCLWorkGroup:
+    // NVPTX uses "block" for workgroup sync scope; AMDGPU uses "workgroup".
+    return isNVPTXTriple(op) ? "block" : "workgroup";
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steffenlarsen wrote:

Ah, good shout. It is now used instead!

https://github.com/llvm/llvm-project/pull/225364