[clang] [llvm] [OpenMP] Update the bitcode library install and search path (PR #136754)

[Joseph Huber via cfe-commits]

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@@ -2794,6 +2794,11 @@ void tools::addOpenMPDeviceRTL(const Driver &D,
   for (const auto &LibPath : HostTC.getFilePaths())
     LibraryPaths.emplace_back(LibPath);
 
+  // Check the target specific library path for the triple as well.
+  SmallString<128> P(D.Dir);
+  llvm::sys::path::append(P, "..", "lib", Triple.getTriple());
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jhuber6 wrote:

Yeah, I mostly copied it from how clang gets the existing file paths. Probably should be cleaned up as a whole.

https://github.com/llvm/llvm-project/pull/136754