[arm] Improve generation of flag setting instructions.

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

Index: src/compiler/arm/instruction-selector-arm.cc
diff --git a/src/compiler/arm/instruction-selector-arm.cc b/src/compiler/arm/instruction-selector-arm.cc
index 4fa1a1dfe94b0076af3067511a08a5a18f06e6b5..7ac3df0bb0d5473bfafb1223bba904552810a02e 100644
--- a/src/compiler/arm/instruction-selector-arm.cc
+++ b/src/compiler/arm/instruction-selector-arm.cc
@@ -1958,6 +1958,10 @@ void VisitWordCompareZero(InstructionSelector* selector, Node* user,
     break;
   }
 
+  if (user->opcode() == IrOpcode::kWord32Equal) {
+    return VisitWordCompare(selector, user, cont);
+  }
+
   // Continuation could not be combined with a compare, emit compare against 0.
   ArmOperandGenerator g(selector);
   InstructionCode const opcode =