[clang] [Clang][InstrProf] Allow absolute path in fun.list of -fprofile-list= (PR #67519)

[Henrik G. Olsson via cfe-commits]

================
@@ -139,9 +139,23 @@ std::optional<ProfileList::ExclusionType>
 ProfileList::isFileExcluded(StringRef FileName,
                             CodeGenOptions::ProfileInstrKind Kind) const {
   StringRef Section = getSectionName(Kind);
-  // Check for "source:<regex>=<case>"
+
+  // Convert the input file path to its canonical (absolute) form
+  llvm::SmallString<128> CanonicalFileName(FileName);
+  llvm::sys::fs::make_absolute(CanonicalFileName);
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hnrklssn wrote:

Any specific reason why you convert the filename to absolute form before 
checking the relative name?

https://github.com/llvm/llvm-project/pull/67519
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