[clang-tidy] Use DenseMap::insert_range (NFC)

[kazutakahirata]

We can safely switch to insert_range here because
SyntheticStmtSourceMap starts out empty in the constructor. Also
TheCFG->synthetic_stmts() comes from DenseMap, so we know that the
keys are unique. That is, operator[] and insert are equivalent in
this particular case.

[llvmbot]

@llvm/pr-subscribers-clang-tidy

@llvm/pr-subscribers-clang-tools-extra

Author: Kazu Hirata (kazutakahirata)

Changes

We can safely switch to insert_range here because
SyntheticStmtSourceMap starts out empty in the constructor. Also
TheCFG->synthetic_stmts() comes from DenseMap, so we know that the
keys are unique. That is, operator[] and insert are equivalent in
this particular case.

---

Full diff: https://github.com/llvm/llvm-project/pull/133844.diff

1 Files Affected:

• (modified) clang-tools-extra/clang-tidy/utils/ExprSequence.cpp (+1-3)

diff --git a/clang-tools-extra/clang-tidy/utils/ExprSequence.cpp b/clang-tools-extra/clang-tidy/utils/ExprSequence.cpp
index 145a5fe378b3e..685277d8bfbca 100644
--- a/clang-tools-extra/clang-tidy/utils/ExprSequence.cpp
+++ b/clang-tools-extra/clang-tidy/utils/ExprSequence.cpp
@@ -84,9 +84,7 @@ getAllInitListForms(const InitListExpr *InitList) {
 ExprSequence::ExprSequence(const CFG *TheCFG, const Stmt *Root,
                            ASTContext *TheContext)
     : Context(TheContext), Root(Root) {
-  for (const auto &SyntheticStmt : TheCFG->synthetic_stmts()) {
-    SyntheticStmtSourceMap[SyntheticStmt.first] = SyntheticStmt.second;
-  }
+  SyntheticStmtSourceMap.insert_range(TheCFG->synthetic_stmts());
 }
 
 bool ExprSequence::inSequence(const Stmt *Before, const Stmt *After) const {