From 9ddff0b93e01d603a1a9b04c32505095841c5be5 Mon Sep 17 00:00:00 2001
From: Simon Pilgrim <llvm-dev@redking.me.uk>
Date: Thu, 8 Aug 2024 18:40:59 +0100
Subject: [PATCH] [X86] FindSingleBitChange - reduce scope of dyn_cast checks.
 NFC.

---
 llvm/lib/Target/X86/X86ISelLowering.cpp | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/llvm/lib/Target/X86/X86ISelLowering.cpp b/llvm/lib/Target/X86/X86ISelLowering.cpp
index 4800b2bdf011a..f69606783f25c 100644
--- a/llvm/lib/Target/X86/X86ISelLowering.cpp
+++ b/llvm/lib/Target/X86/X86ISelLowering.cpp
@@ -30529,8 +30529,7 @@ enum BitTestKind : unsigned {
 static std::pair<Value *, BitTestKind> FindSingleBitChange(Value *V) {
   using namespace llvm::PatternMatch;
   BitTestKind BTK = UndefBit;
-  auto *C = dyn_cast<ConstantInt>(V);
-  if (C) {
+  if (auto *C = dyn_cast<ConstantInt>(V)) {
     // Check if V is a power of 2 or NOT power of 2.
     if (isPowerOf2_64(C->getZExtValue()))
       BTK = ConstantBit;
@@ -30540,8 +30539,7 @@ static std::pair<Value *, BitTestKind> FindSingleBitChange(Value *V) {
   }
 
   // Check if V is some power of 2 pattern known to be non-zero
-  auto *I = dyn_cast<Instruction>(V);
-  if (I) {
+  if (auto *I = dyn_cast<Instruction>(V)) {
     bool Not = false;
     // Check if we have a NOT
     Value *PeekI;