[clang] [llvm] [AMDGPU] Adding the amdgpu-num-work-groups function attribute (PR #79035)

[Jun Wang via cfe-commits]

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@@ -8069,6 +8069,26 @@ static void handleAMDGPUNumVGPRAttr(Sema &S, Decl *D, const ParsedAttr &AL) {
   D->addAttr(::new (S.Context) AMDGPUNumVGPRAttr(S.Context, AL, NumVGPR));
 }
 
+static void handleAMDGPUMaxNumWorkGroupsAttr(Sema &S, Decl *D,
+                                             const ParsedAttr &AL) {
+  uint32_t NumWGX = 0;
+  uint32_t NumWGY = 0;
+  uint32_t NumWGZ = 0;
+  Expr *NumWGXExpr = AL.getArgAsExpr(0);
+  Expr *NumWGYExpr = AL.getArgAsExpr(1);
+  Expr *NumWGZExpr = AL.getArgAsExpr(2);
+  if (!checkUInt32Argument(S, AL, NumWGXExpr, NumWGX))
+    return;
+  if (!checkUInt32Argument(S, AL, NumWGYExpr, NumWGY))
+    return;
+  if (!checkUInt32Argument(S, AL, NumWGZExpr, NumWGZ))
+    return;
+
+  if (NumWGX != 0 && NumWGY != 0 && NumWGZ != 0)
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jwanggit86 wrote:

Pls elaborate.

https://github.com/llvm/llvm-project/pull/79035