================
@@ -155,5 +155,51 @@ std::string hashBlockLoose(BinaryContext &BC, const
BinaryBasicBlock &BB) {
return HashString;
}
+/// An even looser hash of a basic block to use with stale profile matching,
+/// composed of the names of a block's called functions in lexicographic order.
+std::string hashBlockCalls(BinaryContext &BC, const BinaryBasicBlock &BB) {
+ // The hash is computed by creating a string of all lexicographically ordered
+ // called function names.
+ std::multiset<std::string> FunctionNames;
+ for (const MCInst &Instr : BB) {
+ // Skip non-call instructions.
+ if (!BC.MIB->isCall(Instr))
+ continue;
+ const MCSymbol *CallSymbol = BC.MIB->getTargetSymbol(Instr);
+ if (!CallSymbol)
+ continue;
+ FunctionNames.insert(std::string(CallSymbol->getName()));
+ }
+
+ std::string HashString;
+ for (const std::string &FunctionName : FunctionNames)
+ HashString.append(FunctionName);
+
+ return HashString;
+}
+
+/// The same as the above function, but for profiled functions.
----------------
dcci wrote:
functions can be moved around the file, I wouldn't say "same as above" -- as
above can change.
https://github.com/llvm/llvm-project/pull/96596
_______________________________________________
llvm-branch-commits mailing list
llvm-branch-commits@lists.llvm.org
https://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-branch-commits
