RegAllocGreedy: Remove unnecessary null register class check

[arsenm]

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[arsenm]

• RegAllocGreedy: Remove unnecessary null register class check #128487 👈 (View in Graphite)
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[llvmbot]

@llvm/pr-subscribers-llvm-regalloc

Author: Matt Arsenault (arsenm)

Changes

---

Full diff: https://github.com/llvm/llvm-project/pull/128487.diff

1 Files Affected:

• (modified) llvm/lib/CodeGen/RegAllocGreedy.cpp (-3)

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;
   }