[turbofan] Clean up and factor out branch generation logic.

src/compiler/arm64/instruction-selector-arm64.cc

Index: src/compiler/arm64/instruction-selector-arm64.cc
diff --git a/src/compiler/arm64/instruction-selector-arm64.cc b/src/compiler/arm64/instruction-selector-arm64.cc
index aba7eb0189e1bb960624f8f7a4e2ba47a505b222..c0759cfafff2c8e9dc6b62ff6413bcb4536c8213 100644
--- a/src/compiler/arm64/instruction-selector-arm64.cc
+++ b/src/compiler/arm64/instruction-selector-arm64.cc
@@ -1120,12 +1120,6 @@ void InstructionSelector::VisitBranch(Node* branch, BasicBlock* tbranch,
 
   FlagsContinuation cont(kNotEqual, tbranch, fbranch);
 
-  // If we can fall through to the true block, invert the branch.
-  if (IsNextInAssemblyOrder(tbranch)) {
-    cont.Negate();
-    cont.SwapBlocks();
-  }
-
   // Try to combine with comparisons against 0 by simply inverting the branch.
   while (CanCover(user, value)) {
     if (value->opcode() == IrOpcode::kWord32Equal) {