Don't test the Group/Thread input IDs with mesh shader

The SV_GroupIndex, SV_DispatchThreadID, SV_GroupID and SV_GroupThreadID are actually legal for meash shader stage. It shouldn't test them with mesh shader.

This commit tests them with vertex shader and move the test into invalid_entry_parameter.hlsl which's a better place for it.

Author: Zhengxing Li

clang/test/SemaHLSL/Semantics/entry_parameter.hlsl

@@ -1,11 +1,6 @@
 // RUN: %clang_cc1 -triple dxil-pc-shadermodel6.0-compute -hlsl-entry CSMain -x hlsl  -finclude-default-header  -ast-dump -o - %s | FileCheck %s
-// RUN: %clang_cc1 -triple dxil-pc-shadermodel6.0-mesh -hlsl-entry CSMain -x hlsl -finclude-default-header  -verify -o - %s
 
 [numthreads(8,8,1)]
-// expected-error@+4 {{attribute 'SV_GroupIndex' is unsupported in 'mesh' shaders, requires compute}}
-// expected-error@+3 {{attribute 'SV_DispatchThreadID' is unsupported in 'mesh' shaders, requires compute}}
-// expected-error@+2 {{attribute 'SV_GroupID' is unsupported in 'mesh' shaders, requires compute}}
-// expected-error@+1 {{attribute 'SV_GroupThreadID' is unsupported in 'mesh' shaders, requires compute}}
 void CSMain(int GI : SV_GroupIndex, uint ID : SV_DispatchThreadID, uint GID : SV_GroupID, uint GThreadID : SV_GroupThreadID) {
 // CHECK: FunctionDecl 0x{{[0-9a-fA-F]+}} <{{.*}}> line:[[@LINE-1]]:6 CSMain 'void (int, uint, uint, uint)'
 // CHECK-NEXT: ParmVarDecl 0x{{[0-9a-fA-F]+}} <{{.*}}> col:17 GI 'int'

clang/test/SemaHLSL/Semantics/invalid_entry_parameter.hlsl

@@ -71,3 +71,11 @@ struct ST2_GThreadID {
     static uint GThreadID : SV_GroupThreadID;
     uint s_gthreadid : SV_GroupThreadID;
 };
+
+
+[shader("vertex")]
+// expected-error@+4 {{attribute 'SV_GroupIndex' is unsupported in 'vertex' shaders, requires compute}}
+// expected-error@+3 {{attribute 'SV_DispatchThreadID' is unsupported in 'vertex' shaders, requires compute}}
+// expected-error@+2 {{attribute 'SV_GroupID' is unsupported in 'vertex' shaders, requires compute}}
+// expected-error@+1 {{attribute 'SV_GroupThreadID' is unsupported in 'vertex' shaders, requires compute}}
+void vs_main(int GI : SV_GroupIndex, uint ID : SV_DispatchThreadID, uint GID : SV_GroupID, uint GThreadID : SV_GroupThreadID) {}