[AsmPrinter] Avoid repeated map lookups (NFC) (#127576)

kazutakahirata · web-flow · commit 4405451a22b9 · 2025-02-18T08:39:14.000-08:00
diff --git a/llvm/lib/CodeGen/AsmPrinter/DbgEntityHistoryCalculator.cpp b/llvm/lib/CodeGen/AsmPrinter/DbgEntityHistoryCalculator.cpp
@@ -362,8 +362,9 @@ static void clobberRegEntries(InlinedEntity Var, unsigned RegNo,
       FellowRegisters.push_back(Reg);
 
   // Drop all entries that have ended.
+  auto &Entries = LiveEntries[Var];
   for (auto Index : IndicesToErase)
-    LiveEntries[Var].erase(Index);
+    Entries.erase(Index);
 }
 
 /// Add a new debug value for \p Var. Closes all overlapping debug values.

Original file line number	Diff line number	Diff line change
`@@ -362,8 +362,9 @@ static void clobberRegEntries(InlinedEntity Var, unsigned RegNo,`
`362`	`362`	`FellowRegisters.push_back(Reg);`
`363`	`363`
`364`	`364`	`// Drop all entries that have ended.`
	`365`	`+ auto &Entries = LiveEntries[Var];`
`365`	`366`	`for (auto Index : IndicesToErase)`
`366`		`- LiveEntries[Var].erase(Index);`
	`367`	`+ Entries.erase(Index);`
`367`	`368`	`}`
`368`	`369`
`369`	`370`	`/// Add a new debug value for \p Var. Closes all overlapping debug values.`