llvmbot wrote:

<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-backend-x86

Author: Matt Arsenault (arsenm)

<details>
<summary>Changes</summary>



---
Full diff: https://github.com/llvm/llvm-project/pull/160486.diff


1 Files Affected:

- (modified) llvm/lib/CodeGen/RegAllocGreedy.cpp (+2-4) 


``````````diff
diff --git a/llvm/lib/CodeGen/RegAllocGreedy.cpp 
b/llvm/lib/CodeGen/RegAllocGreedy.cpp
index 6957548ac6c7a..bb8ebe7d7ddf1 100644
--- a/llvm/lib/CodeGen/RegAllocGreedy.cpp
+++ b/llvm/lib/CodeGen/RegAllocGreedy.cpp
@@ -2486,15 +2486,13 @@ void RAGreedy::tryHintRecoloring(const LiveInterval 
&VirtReg) {
   // We have a broken hint, check if it is possible to fix it by
   // reusing PhysReg for the copy-related live-ranges. Indeed, we evicted
   // some register and PhysReg may be available for the other live-ranges.
-  SmallSet<Register, 4> Visited;
-  SmallVector<Register, 2> RecoloringCandidates;
   HintsInfo Info;
   Register Reg = VirtReg.reg();
   MCRegister PhysReg = VRM->getPhys(Reg);
   // Start the recoloring algorithm from the input live-interval, then
   // it will propagate to the ones that are copy-related with it.
-  Visited.insert(Reg);
-  RecoloringCandidates.push_back(Reg);
+  SmallSet<Register, 4> Visited = {Reg};
+  SmallVector<Register, 2> RecoloringCandidates = {Reg};
 
   LLVM_DEBUG(dbgs() << "Trying to reconcile hints for: " << printReg(Reg, TRI)
                     << '(' << printReg(PhysReg, TRI) << ")\n");

``````````

</details>


https://github.com/llvm/llvm-project/pull/160486
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