[clang] [AMDGPU] Use the AMDGPUToolChain when targeting C/C++ directly (PR #99687)

[Yaxun Liu via cfe-commits]

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@@ -6405,7 +6424,12 @@ const ToolChain &Driver::getToolChain(const ArgList &Args,
       TC = std::make_unique<toolchains::NVPTXToolChain>(*this, Target, Args);
       break;
     case llvm::Triple::AMDHSA:
-      TC = std::make_unique<toolchains::ROCMToolChain>(*this, Target, Args);
+      TC =
+          llvm::any_of(Inputs,
+                       [](auto &Input) { return types::isOpenCL(Input.first); })
+              ? std::make_unique<toolchains::ROCMToolChain>(*this, Target, Args)
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yxsamliu wrote:

The same C/C++ source file will be compiled differently, depending on whether they are compiled with OpenCL programs. This may cause confusion to the users. Can we let ROCMToolChain behave the same as AMDGPUToolChain for C/C++ programs?

https://github.com/llvm/llvm-project/pull/99687