[llvm] [SampleFDO][NFC] Refactoring sample reader to support on-demand read profiles for given functions (PR #104654)

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git-clang-format --diff 981191aa94bfd3fce0852ee2c8ff2b23aba5a4a6 8cece4d8d89e8c3d6bd1454bcb3a14be61e58a7b --extensions cpp,h -- llvm/include/llvm/ProfileData/SampleProfReader.h llvm/lib/ProfileData/SampleProfReader.cpp
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View the diff from clang-format here.
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``````````diff
diff --git a/llvm/include/llvm/ProfileData/SampleProfReader.h b/llvm/include/llvm/ProfileData/SampleProfReader.h
index a5b53f79ab..7a29cda9d4 100644
--- a/llvm/include/llvm/ProfileData/SampleProfReader.h
+++ b/llvm/include/llvm/ProfileData/SampleProfReader.h
@@ -756,7 +756,7 @@ protected:
   std::error_code readFuncOffsetTable();
   std::error_code readFuncProfiles();
   std::error_code readFuncProfiles(const DenseSet<StringRef> &FuncsToUse,
-                                   SampleProfileMap &Profiles);  
+                                   SampleProfileMap &Profiles);
   std::error_code readNameTableSec(bool IsMD5, bool FixedLengthMD5);
   std::error_code readCSNameTableSec();
   std::error_code readProfileSymbolList();
diff --git a/llvm/lib/ProfileData/SampleProfReader.cpp b/llvm/lib/ProfileData/SampleProfReader.cpp
index bac7791f20..48c4c6ad55 100644
--- a/llvm/lib/ProfileData/SampleProfReader.cpp
+++ b/llvm/lib/ProfileData/SampleProfReader.cpp
@@ -731,7 +731,7 @@ std::error_code SampleProfileReaderExtBinaryBase::readOneSection(
     break;
   }
   case SecLBRProfile:
-    LBRProfileSecRange = std::make_pair(Data, End);  
+    LBRProfileSecRange = std::make_pair(Data, End);
     if (std::error_code EC = readFuncProfiles())
       return EC;
     break;

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https://github.com/llvm/llvm-project/pull/104654