[Mlir-commits] [mlir] [mlir] Avoid repeated hash lookups (NFC) (PR #113249)

[llvmlistbot at llvm.org]

llvmbot wrote:


<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-mlir-core

Author: Kazu Hirata (kazutakahirata)

<details>
<summary>Changes</summary>



---
Full diff: https://github.com/llvm/llvm-project/pull/113249.diff


1 Files Affected:

- (modified) mlir/lib/Pass/IRPrinting.cpp (+1-4) 


``````````diff
diff --git a/mlir/lib/Pass/IRPrinting.cpp b/mlir/lib/Pass/IRPrinting.cpp
index 9ffda6402cc07a..99e0601e4749cc 100644
--- a/mlir/lib/Pass/IRPrinting.cpp
+++ b/mlir/lib/Pass/IRPrinting.cpp
@@ -216,11 +216,8 @@ getOpAndSymbolNames(Operation *op, StringRef passName,
   SmallVector<std::pair<std::string, StringRef>> pathElements;
   SmallVector<unsigned> countPrefix;
 
-  if (!counters.contains(op))
-    counters[op] = -1;
-
   Operation *iter = op;
-  ++counters[op];
+  ++counters.try_emplace(op, -1).first->second;
   while (iter) {
     countPrefix.push_back(counters[iter]);
     StringAttr symbolName =

``````````

</details>


https://github.com/llvm/llvm-project/pull/113249