https://github.com/arsenm created
https://github.com/llvm/llvm-project/pull/160485
None
>From 549ba6c5469304a2949e2a1482f2a18a42ee1d54 Mon Sep 17 00:00:00 2001
From: Matt Arsenault <matthew.arsena...@amd.com>
Date: Wed, 24 Sep 2025 19:06:39 +0900
Subject: [PATCH] Greedy: Merge VirtRegMap queries into one use (NFC)
---
llvm/lib/CodeGen/RegAllocGreedy.cpp | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/llvm/lib/CodeGen/RegAllocGreedy.cpp
b/llvm/lib/CodeGen/RegAllocGreedy.cpp
index dc23ab3ce9d2b..6957548ac6c7a 100644
--- a/llvm/lib/CodeGen/RegAllocGreedy.cpp
+++ b/llvm/lib/CodeGen/RegAllocGreedy.cpp
@@ -2502,8 +2502,10 @@ void RAGreedy::tryHintRecoloring(const LiveInterval
&VirtReg) {
do {
Reg = RecoloringCandidates.pop_back_val();
+ MCRegister CurrPhys = VRM->getPhys(Reg);
+
// This may be a skipped register.
- if (!VRM->hasPhys(Reg)) {
+ if (!CurrPhys) {
assert(!shouldAllocateRegister(Reg) &&
"We have an unallocated variable which should have been handled");
continue;
@@ -2512,7 +2514,6 @@ void RAGreedy::tryHintRecoloring(const LiveInterval
&VirtReg) {
// Get the live interval mapped with this virtual register to be able
// to check for the interference with the new color.
LiveInterval &LI = LIS->getInterval(Reg);
- MCRegister CurrPhys = VRM->getPhys(Reg);
// Check that the new color matches the register class constraints and
// that it is free for this live range.
if (CurrPhys != PhysReg && (!MRI->getRegClass(Reg)->contains(PhysReg) ||
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