[clang-tools-extra] [modularize] Use std::tie to implement operator< (NFC) (PR #139410)

[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/139410.diff


2 Files Affected:

- (modified) clang-tools-extra/modularize/Modularize.cpp (+2-5) 
- (modified) clang-tools-extra/modularize/PreprocessorTracker.cpp (+2-13) 


``````````diff
diff --git a/clang-tools-extra/modularize/Modularize.cpp b/clang-tools-extra/modularize/Modularize.cpp
index 8609692945344..7f8a19280b111 100644
--- a/clang-tools-extra/modularize/Modularize.cpp
+++ b/clang-tools-extra/modularize/Modularize.cpp
@@ -406,11 +406,8 @@ struct Location {
   }
 
   friend bool operator<(const Location &X, const Location &Y) {
-    if (X.File != Y.File)
-      return X.File < Y.File;
-    if (X.Line != Y.Line)
-      return X.Line < Y.Line;
-    return X.Column < Y.Column;
+    return std::tie(X.File, X.Line, X.Column) <
+           std::tie(Y.File, Y.Line, Y.Column);
   }
   friend bool operator>(const Location &X, const Location &Y) { return Y < X; }
   friend bool operator<=(const Location &X, const Location &Y) {
diff --git a/clang-tools-extra/modularize/PreprocessorTracker.cpp b/clang-tools-extra/modularize/PreprocessorTracker.cpp
index 0c030f1112204..336f570217933 100644
--- a/clang-tools-extra/modularize/PreprocessorTracker.cpp
+++ b/clang-tools-extra/modularize/PreprocessorTracker.cpp
@@ -494,19 +494,8 @@ class PPItemKey {
     return Column == Other.Column;
   }
   bool operator<(const PPItemKey &Other) const {
-    if (Name < Other.Name)
-      return true;
-    else if (Name > Other.Name)
-      return false;
-    if (File < Other.File)
-      return true;
-    else if (File > Other.File)
-      return false;
-    if (Line < Other.Line)
-      return true;
-    else if (Line > Other.Line)
-      return false;
-    return Column < Other.Column;
+    return std::tie(Name, File, Line, Column) <
+           std::tie(Other.Name, Other.File, Other.Line, Other.Column);
   }
   StringHandle Name;
   HeaderHandle File;

``````````

</details>


https://github.com/llvm/llvm-project/pull/139410