[clang-tools-extra] [clangd] Simplify code with *Map::operator[] (NFC) (PR #111939)

[via cfe-commits]

llvmbot wrote:


<!--LLVM PR SUMMARY COMMENT-->

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

Author: Kazu Hirata (kazutakahirata)

<details>
<summary>Changes</summary>



---
Full diff: https://github.com/llvm/llvm-project/pull/111939.diff


2 Files Affected:

- (modified) clang-tools-extra/clangd/Headers.cpp (+2-2) 
- (modified) clang-tools-extra/clangd/XRefs.cpp (+1-2) 


``````````diff
diff --git a/clang-tools-extra/clangd/Headers.cpp b/clang-tools-extra/clangd/Headers.cpp
index 75f8668e7bef06..b537417bd10568 100644
--- a/clang-tools-extra/clangd/Headers.cpp
+++ b/clang-tools-extra/clangd/Headers.cpp
@@ -75,8 +75,8 @@ class IncludeStructure::RecordHeaders : public PPCallbacks {
               IDs.push_back(HID);
           }
       }
-      Out->MainFileIncludesBySpelling.try_emplace(Inc.Written)
-          .first->second.push_back(Out->MainFileIncludes.size() - 1);
+      Out->MainFileIncludesBySpelling[Inc.Written].push_back(
+          Out->MainFileIncludes.size() - 1);
     }
 
     // Record include graph (not just for main-file includes)
diff --git a/clang-tools-extra/clangd/XRefs.cpp b/clang-tools-extra/clangd/XRefs.cpp
index f94cadeffaa298..b34aba603b5306 100644
--- a/clang-tools-extra/clangd/XRefs.cpp
+++ b/clang-tools-extra/clangd/XRefs.cpp
@@ -2282,8 +2282,7 @@ incomingCalls(const CallHierarchyItem &Item, const SymbolIndex *Index) {
       elog("incomingCalls failed to convert location: {0}", Loc.takeError());
       return;
     }
-    auto It = CallsIn.try_emplace(R.Container, std::vector<Range>{}).first;
-    It->second.push_back(Loc->range);
+    CallsIn[R.Container].push_back(Loc->range);
 
     ContainerLookup.IDs.insert(R.Container);
   });

``````````

</details>


https://github.com/llvm/llvm-project/pull/111939