[llvm] [GISel][AArch64] Reuse LHS and RHS in emitFPCompare instead of calling getReg() (NFC) (PR #155263)

[via llvm-commits]

https://github.com/AZero13 created https://github.com/llvm/llvm-project/pull/155263

None

>From ac2d6da511f8715cbc6cfa7a4378f1fc1f0b136c Mon Sep 17 00:00:00 2001
From: AZero13 <gfunni234 at gmail.com>
Date: Mon, 25 Aug 2025 11:51:23 -0400
Subject: [PATCH] [GISel][AArch64] Reuse LHS and RHS in emitFPCompare instead
 of calling getReg() (NFC)

---
 llvm/lib/Target/AArch64/GISel/AArch64InstructionSelector.cpp | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/llvm/lib/Target/AArch64/GISel/AArch64InstructionSelector.cpp b/llvm/lib/Target/AArch64/GISel/AArch64InstructionSelector.cpp
index 0bceb322726d1..0aefce8d32b2c 100644
--- a/llvm/lib/Target/AArch64/GISel/AArch64InstructionSelector.cpp
+++ b/llvm/lib/Target/AArch64/GISel/AArch64InstructionSelector.cpp
@@ -4875,8 +4875,7 @@ MachineInstr *AArch64InstructionSelector::emitConjunctionRec(
       auto Dst = MRI.cloneVirtualRegister(LHS);
       if (isa<GICmp>(Cmp))
         return emitSUBS(Dst, Cmp->getOperand(2), Cmp->getOperand(3), MIB);
-      return emitFPCompare(Cmp->getOperand(2).getReg(),
-                           Cmp->getOperand(3).getReg(), MIB);
+      return emitFPCompare(LHS, RHS, MIB, CC);
     }
     // Otherwise produce a ccmp.
     return emitConditionalComparison(LHS, RHS, CC, Predicate, OutCC, MIB);