[clang] [llvm] [clang][Hexagon] Add Picolibc as part of triple (PR #169613)

[Brian Cain via llvm-commits]

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@@ -583,16 +682,38 @@ void HexagonToolChain::getHexagonLibraryPaths(const ArgList &Args,
     HasG0 = *G == 0;
 
   const std::string CpuVer = GetTargetCPUVersion(Args).str();
-  for (auto &Dir : RootDirs) {
-    std::string LibDir = Dir + "/hexagon/lib";
-    std::string LibDirCpu = LibDir + '/' + CpuVer;
+  // Special-case Picolibc baremetal layout:
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androm3da wrote:

Once picolibc stabilizes, maybe we could consider migrating other targets to use this and make it the general case.

https://github.com/llvm/llvm-project/pull/169613