[PATCH] D131799: [HLSL] clang codeGen for HLSLNumThreadsAttr

[Xiang Li via Phabricator via cfe-commits]

python3kgae updated this revision to Diff 460288.
python3kgae added a comment.

Rebase


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D131799/new/

https://reviews.llvm.org/D131799

Files:
  clang/lib/CodeGen/CGHLSLRuntime.cpp
  clang/test/CodeGenHLSL/entry.hlsl


Index: clang/test/CodeGenHLSL/entry.hlsl
===================================================================
--- clang/test/CodeGenHLSL/entry.hlsl
+++ clang/test/CodeGenHLSL/entry.hlsl
@@ -2,9 +2,10 @@
 
 // Make sure not mangle entry.
 // CHECK:define void @foo()
-// Make sure add function attribute.
+// Make sure add function attribute and numthreads attribute.
+// CHECK:"hlsl.numthreads"="16,8,1"
 // CHECK:"hlsl.shader"="compute"
-[numthreads(1,1,1)]
+[numthreads(16,8,1)]
 void foo() {
 
 }
Index: clang/lib/CodeGen/CGHLSLRuntime.cpp
===================================================================
--- clang/lib/CodeGen/CGHLSLRuntime.cpp
+++ clang/lib/CodeGen/CGHLSLRuntime.cpp
@@ -19,6 +19,7 @@
 #include "llvm/IR/IntrinsicsDirectX.h"
 #include "llvm/IR/Metadata.h"
 #include "llvm/IR/Module.h"
+#include "llvm/Support/FormatVariadic.h"
 
 using namespace clang;
 using namespace CodeGen;
@@ -107,6 +108,13 @@
   const StringRef ShaderAttrKindStr = "hlsl.shader";
   Fn->addFnAttr(ShaderAttrKindStr,
                 ShaderAttr->ConvertShaderTypeToStr(ShaderAttr->getType()));
+  if (HLSLNumThreadsAttr *NumThreadsAttr = FD->getAttr<HLSLNumThreadsAttr>()) {
+    const StringRef NumThreadsKindStr = "hlsl.numthreads";
+    std::string NumThreadsStr =
+        formatv("{0},{1},{2}", NumThreadsAttr->getX(), NumThreadsAttr->getY(),
+                NumThreadsAttr->getZ());
+    Fn->addFnAttr(NumThreadsKindStr, NumThreadsStr);
+  }
 }
 
 llvm::Value *CGHLSLRuntime::emitInputSemantic(IRBuilder<> &B,


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