[llvm-branch-commits] [llvm] Greedy: Merge VirtRegMap queries into one use (NFC) (PR #160485)

[Matt Arsenault via llvm-branch-commits]

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.Arsenault at 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) ||