================
@@ -49,3 +49,28 @@ void CSMain3_GID(uint3 : SV_GroupID) {
// CHECK-NEXT: ParmVarDecl 0x{{[0-9a-fA-F]+}} <{{.*}}> col:24 'uint3'
// CHECK-NEXT: HLSLSV_GroupIDAttr
}
+
+[numthreads(8,8,1)]
+void CSMain_GThreadID(uint ID : SV_GroupThreadID) {
+// CHECK: FunctionDecl 0x{{[0-9a-fA-F]+}} <{{.*}}> line:[[@LINE-1]]:6
CSMain_GThreadID 'void (uint)'
+// CHECK-NEXT: ParmVarDecl 0x{{[0-9a-fA-F]+}} <{{.*}}> col:28 ID 'uint'
+// CHECK-NEXT: HLSLSV_GroupThreadIDAttr
+}
+[numthreads(8,8,1)]
+void CSMain1_GThreadID(uint2 ID : SV_GroupThreadID) {
+// CHECK: FunctionDecl 0x{{[0-9a-fA-F]+}} <{{.*}}> line:[[@LINE-1]]:6
CSMain1_GThreadID 'void (uint2)'
+// CHECK-NEXT: ParmVarDecl 0x{{[0-9a-fA-F]+}} <{{.*}}> col:30 ID 'uint2'
+// CHECK-NEXT: HLSLSV_GroupThreadIDAttr
+}
+[numthreads(8,8,1)]
+void CSMain2_GThreadID(uint3 ID : SV_GroupThreadID) {
+// CHECK: FunctionDecl 0x{{[0-9a-fA-F]+}} <{{.*}}> line:[[@LINE-1]]:6
CSMain2_GThreadID 'void (uint3)'
+// CHECK-NEXT: ParmVarDecl 0x{{[0-9a-fA-F]+}} <{{.*}}> col:30 ID 'uint3'
+// CHECK-NEXT: HLSLSV_GroupThreadIDAttr
+}
+[numthreads(8,8,1)]
+void CSMain3_GThreadID(uint3 : SV_GroupThreadID) {
----------------
tex3d wrote:
The general use case could be for parameters that contribute to the inter-stage
signature. You must still declare the matching set of parameters in the same
order, even if you don't use them, to match signatures between stages. This
doesn't make a difference in this stage (cs), but it would still be a generally
supported pattern for all function signatures in HLSL.
https://github.com/llvm/llvm-project/pull/117781
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