[llvm] [CodeGen][StaticDataPartitioning]Place local-linkage global variables in hot or unlikely prefixed sections based on profile information (PR #125756)

[David Li via llvm-commits]

================
@@ -0,0 +1,50 @@
+#include "llvm/Analysis/StaticDataProfileInfo.h"
+#include "llvm/IR/Constant.h"
+#include "llvm/IR/GlobalVariable.h"
+#include "llvm/InitializePasses.h"
+#include "llvm/ProfileData/InstrProf.h"
+#include <sys/types.h>
+
+using namespace llvm;
+void StaticDataProfileInfo::addConstantProfileCount(
+    const Constant *C, std::optional<uint64_t> Count) {
+  if (!Count) {
+    ConstantWithoutCounts.insert(C);
+    return;
+  }
+  uint64_t &OriginalCount = ConstantProfileCounts[C];
+  OriginalCount += llvm::SaturatingAdd(*Count, OriginalCount);
----------------
david-xl wrote:

should += be just =?

https://github.com/llvm/llvm-project/pull/125756