Fix and reapply IR PGO support for Flang (#142892)

This PR resubmits the changes from #136098, which was previously
reverted due to a build failure during the linking stage:

```
undefined reference to `llvm::DebugInfoCorrelate'  
undefined reference to `llvm::ProfileCorrelate'
```

The root cause was that `llvm/lib/Frontend/Driver/CodeGenOptions.cpp`
references symbols from the `Instrumentation` component, but the
`LINK_COMPONENTS` in the `llvm/lib/Frontend/CMakeLists.txt` for
`LLVMFrontendDriver` did not include it. As a result, linking failed in
configurations where these components were not transitively linked.

### Fix:

This updated patch explicitly adds `Instrumentation` to
`LINK_COMPONENTS` in the relevant `llvm/lib/Frontend/CMakeLists.txt`
file to ensure the required symbols are properly resolved.

---------

Co-authored-by: ict-ql <168183727+ict-ql@users.noreply.github.com>
Co-authored-by: Chyaka <52224511+liliumshade@users.noreply.github.com>
Co-authored-by: Tarun Prabhu <tarunprabhu@gmail.com>

1 files changed, 3 insertions, 3 deletions

diff --git a/clang/lib/Frontend/CompilerInvocation.cpp b/clang/lib/Frontend/CompilerInvocation.cpp
index 2c02719..dd021ad 100644
--- a/clang/lib/Frontend/CompilerInvocation.cpp
+++ b/clang/lib/Frontend/CompilerInvocation.cpp
@@ -1492,11 +1492,11 @@ static void setPGOUseInstrumentor(CodeGenOptions &Opts,
   // which is available (might be one or both).
   if (PGOReader->isIRLevelProfile() || PGOReader->hasMemoryProfile()) {
     if (PGOReader->hasCSIRLevelProfile())
-      Opts.setProfileUse(CodeGenOptions::ProfileCSIRInstr);
+      Opts.setProfileUse(llvm::driver::ProfileInstrKind::ProfileCSIRInstr);
     else
-      Opts.setProfileUse(CodeGenOptions::ProfileIRInstr);
+      Opts.setProfileUse(llvm::driver::ProfileInstrKind::ProfileIRInstr);
   } else
-    Opts.setProfileUse(CodeGenOptions::ProfileClangInstr);
+    Opts.setProfileUse(llvm::driver::ProfileInstrKind::ProfileClangInstr);
 }
 
 void CompilerInvocation::setDefaultPointerAuthOptions(