[clang] [Clang][SME] Detect always_inline used with mismatched streaming attributes (PR #77936)

[Sander de Smalen via cfe-commits]

================
@@ -3145,7 +3138,7 @@ bool Sema::ParseSVEImmChecks(
   return HasError;
 }
 
-static ArmStreamingType getArmStreamingFnType(const FunctionDecl *FD) {
+Sema::ArmStreamingType Sema::getArmStreamingFnType(const FunctionDecl *FD) {
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sdesmalen-arm wrote:

I don't think this function is worth changing the build configuration to add a 
dependence of clang::Sema to clang::CodeGen :)

You can just inline (duplicate) the functionality here directly into your 
function in `AArch64TargetCodeGenInfo::checkFunctionCallABI` and map the 
attributes directly to the `llvm::AArch64::SMEAttrs` class.

That way you can also avoid needing the `ArmStreamingType` enum.

https://github.com/llvm/llvm-project/pull/77936
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