[clang] [llvm] [HLSL] Implement ddx/ddy_coarse intrinsics (PR #164831)

[Alexander Johnston via llvm-commits]

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@@ -151,6 +151,18 @@ Value *CodeGenFunction::EmitSPIRVBuiltinExpr(unsigned BuiltinID,
         Intrinsic::spv_global_offset,
         ArrayRef<Value *>{EmitScalarExpr(E->getArg(0))}, nullptr,
         "spv.global.offset");
+  case SPIRV::BI__builtin_spirv_ddx_coarse:
+    return Builder.CreateIntrinsic(
+        /*ReturnType=*/getTypes().ConvertType(E->getType()),
+        Intrinsic::spv_ddx_coarse,
+        ArrayRef<Value *>{EmitScalarExpr(E->getArg(0))}, nullptr,
+        "spv.ddx.coarse");
+  case SPIRV::BI__builtin_spirv_ddy_coarse:
+    return Builder.CreateIntrinsic(
+        /*ReturnType=*/getTypes().ConvertType(E->getType()),
+        Intrinsic::spv_ddy_coarse,
+        ArrayRef<Value *>{EmitScalarExpr(E->getArg(0))}, nullptr,
+        "spv.ddy.coarse");
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Alexander-Johnston wrote:

Reverted

https://github.com/llvm/llvm-project/pull/164831