[llvm] RegAllocGreedy: Remove unnecessary null register class check (PR #128487)

[Matt Arsenault via llvm-commits]

https://github.com/arsenm created https://github.com/llvm/llvm-project/pull/128487

None

>From 3cdeda60d12da07f13a37b6a1e098c46d62f404c Mon Sep 17 00:00:00 2001
From: Matt Arsenault <Matthew.Arsenault at amd.com>
Date: Mon, 24 Feb 2025 16:58:12 +0700
Subject: [PATCH] RegAllocGreedy: Remove unnecessary null register class check

---
 llvm/lib/CodeGen/RegAllocGreedy.cpp | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/llvm/lib/CodeGen/RegAllocGreedy.cpp b/llvm/lib/CodeGen/RegAllocGreedy.cpp
index 08aec54f02408..6b494a2ce006d 100644
--- a/llvm/lib/CodeGen/RegAllocGreedy.cpp
+++ b/llvm/lib/CodeGen/RegAllocGreedy.cpp
@@ -2710,9 +2710,6 @@ bool RAGreedy::hasVirtRegAlloc() {
     Register Reg = Register::index2VirtReg(I);
     if (MRI->reg_nodbg_empty(Reg))
       continue;
-    const TargetRegisterClass *RC = MRI->getRegClass(Reg);
-    if (!RC)
-      continue;
     if (shouldAllocateRegister(Reg))
       return true;
   }