[clang] [clang][SPIRV] Add builtin for OpGenericCastToPtrExplicit and its SPIR-V friendly binding (PR #137805)

[Farzon Lotfi via cfe-commits]

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@@ -5837,12 +5838,13 @@ static void handleBuiltinAliasAttr(Sema &S, Decl *D, const ParsedAttr &AL) {
   bool IsAArch64 = S.Context.getTargetInfo().getTriple().isAArch64();
   bool IsARM = S.Context.getTargetInfo().getTriple().isARM();
   bool IsRISCV = S.Context.getTargetInfo().getTriple().isRISCV();
+  bool IsSPIRV = S.Context.getTargetInfo().getTriple().isSPIRV();
   bool IsHLSL = S.Context.getLangOpts().HLSL;
   if ((IsAArch64 && !S.ARM().SveAliasValid(BuiltinID, AliasName)) ||
       (IsARM && !S.ARM().MveAliasValid(BuiltinID, AliasName) &&
        !S.ARM().CdeAliasValid(BuiltinID, AliasName)) ||
       (IsRISCV && !S.RISCV().isAliasValid(BuiltinID, AliasName)) ||
-      (!IsAArch64 && !IsARM && !IsRISCV && !IsHLSL)) {
+      (!IsAArch64 && !IsARM && !IsRISCV && !IsHLSL && !IsSPIRV)) {
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farzonl wrote:

This shouldn't impact HLSL's ability to target SPIRV will it? More specifically will this impact HLSL's use of SPIRV builtins?

https://github.com/llvm/llvm-project/pull/137805