[clang] [HLSL] Treat `main` as any other function (PR #110546)

[Farzon Lotfi via cfe-commits]

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@@ -4,7 +4,7 @@
 // SPIRV: error: '-fnative-half-type' option requires target HLSL Version >= 2018, but HLSL Version is 'hlsl2016'
 
 // valid: "spirv-unknown-vulkan-library"
-// valid: define spir_func void @main() #0 {
+// valid: define spir_func void @{{.*}}main{{.*}}() #0 {
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farzonl wrote:

```suggestion
valid: define spir_func void @{{.*main.*}}() #0 {
```

https://github.com/llvm/llvm-project/pull/110546