[lit][SPIRV] convert runFileTest shaders to lit FileCheck test (microsoft#6069)

Convert the moved shaders to lit FileCheck test.
5 shaders not used by runFileTest are also converted and left in
CodeGenSPIRV with CodeGenSPIRV folder enabled for lit.
Now all shaders are converted to lit.
Will move all files back to CodeGenSPIRV and delete CodeGenSPIRV_Lit
next.

Author: Greg Roth

tools/clang/test/CodeGenSPIRV/fn.template.arg.substitute.hlsl

@@ -1,13 +1,13 @@
-// RUN: %dxc -T ps_6_0 -E main -HV 2021
+// RUN: %dxc -T ps_6_0 -E main -HV 2021 -fcgl %s -spirv | FileCheck %s
 
 template <bool B1>
 bool fnTemplate(bool B2) {
   return !B1 && B2;
 }
 
-// CHECK:  %10 = OpConstantComposite %v4float %float_1 %float_1 %float_1 %float_1
-// CHECK:  %12 = OpConstantComposite %v4float %float_0 %float_0 %float_0 %float_0
-// CHECK: %main = OpFunction %void None %17
+// CHECK:  {{%[0-9]+}} = OpConstantComposite %v4float %float_1 %float_1 %float_1 %float_1
+// CHECK:  {{%[0-9]+}} = OpConstantComposite %v4float %float_0 %float_0 %float_0 %float_0
+// CHECK: %main = OpFunction %void None {{%[0-9]+}}
 float4 main(int val : A) : SV_Target {
   return fnTemplate<false>(val != 0) ? (float4)1 : (float4)0;
 }

tools/clang/test/CodeGenSPIRV/lit.local.cfg

@@ -1,10 +1,10 @@
-// RUN: %dxc -T ps_6_1 -E main
+// RUN: %dxc -T ps_6_1 -E main -fcgl %s -spirv | FileCheck %s
 
 // CHECK:      OpCapability MultiView
 // CHECK:      OpExtension "SPV_KHR_multiview"
 
 // CHECK:      OpEntryPoint Fragment
-// CHECK-SAME: [[viewindex:%\d+]]
+// CHECK-SAME: [[viewindex:%[0-9]+]]
 
 // CHECK:      OpDecorate [[viewindex]] BuiltIn ViewIndex
 

tools/clang/test/CodeGenSPIRV/meshshading.ext.ps.hlsl

@@ -1,4 +1,4 @@
-// RUN: %dxc -T vs_5_0 -E main -fspv-target-env=vulkan1.1
+// RUN: %dxc -T vs_5_0 -E main -fspv-target-env=vulkan1.1 -fcgl %s -spirv | FileCheck %s
 
 // CHECK: %bar = OpTypeStruct %empty %mat4v4float
 // CHECK: %foo = OpTypeStruct %bar
@@ -23,7 +23,7 @@ struct foo : bar {
 
 // CHECK:     %foo_get = OpFunction
 // CHECK:  %param_this = OpFunctionParameter %_ptr_Function_foo
-// CHECK: [[bar:%\w+]] = OpAccessChain %_ptr_Function_bar %param_this %uint_0
+// CHECK: [[bar:%[a-zA-Z0-9_]+]] = OpAccessChain %_ptr_Function_bar %param_this %uint_0
 // CHECK:                OpFunctionCall %v4float %bar_value [[bar]]
 
   float4 get() {