[llvm] [NFC][DominanceFrontier] Replace std::map with DenseMap for DomSetMapType (PR #70403)

[via llvm-commits]

llvmbot wrote:


<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-llvm-analysis

Author: Wenju He (wenju-he)

<details>
<summary>Changes</summary>

DenseMap is preferred according to llvm CodingStandards.

---
Full diff: https://github.com/llvm/llvm-project/pull/70403.diff


1 Files Affected:

- (modified) llvm/include/llvm/Analysis/DominanceFrontier.h (+2-2) 


``````````diff
diff --git a/llvm/include/llvm/Analysis/DominanceFrontier.h b/llvm/include/llvm/Analysis/DominanceFrontier.h
index 42ede2ac5ece38d..db0130e4804b801 100644
--- a/llvm/include/llvm/Analysis/DominanceFrontier.h
+++ b/llvm/include/llvm/Analysis/DominanceFrontier.h
@@ -17,6 +17,7 @@
 #ifndef LLVM_ANALYSIS_DOMINANCEFRONTIER_H
 #define LLVM_ANALYSIS_DOMINANCEFRONTIER_H
 
+#include "llvm/ADT/DenseMap.h"
 #include "llvm/ADT/GraphTraits.h"
 #include "llvm/ADT/SetVector.h"
 #include "llvm/Config/llvm-config.h"
@@ -24,7 +25,6 @@
 #include "llvm/Pass.h"
 #include "llvm/Support/GenericDomTree.h"
 #include <cassert>
-#include <map>
 #include <utility>
 
 namespace llvm {
@@ -42,7 +42,7 @@ class DominanceFrontierBase {
   // Dom set for a bb. Use SetVector to make iterating dom frontiers of a bb
   // deterministic.
   using DomSetType = SetVector<BlockT *>;
-  using DomSetMapType = std::map<BlockT *, DomSetType>; // Dom set map
+  using DomSetMapType = DenseMap<BlockT *, DomSetType>; // Dom set map
 
 protected:
   using BlockTraits = GraphTraits<BlockT *>;

``````````

</details>


https://github.com/llvm/llvm-project/pull/70403