[clang] [clang][Sema][SYCL] Fix MSVC STL usage on AMDGPU (PR #135979)

[Yaxun Liu via cfe-commits]

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@@ -5522,6 +5522,11 @@ bool Sema::CheckCallingConvAttr(const ParsedAttr &Attrs, CallingConv &CC,
       A = HostTI->checkCallingConvention(CC);
     if (A == TargetInfo::CCCR_OK && CheckDevice && DeviceTI)
       A = DeviceTI->checkCallingConvention(CC);
+  } else if (LangOpts.SYCLIsDevice && TI.getTriple().isAMDGPU() &&
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yxsamliu wrote:

maybe add a comment: assuming function with CC_X86VectorCall calling convention is always to be emitted on host target.

https://github.com/llvm/llvm-project/pull/135979