[Turbofan] Simplify operand canonicalization on archs with simple FP aliasing.

src/compiler/instruction.cc

Index: src/compiler/instruction.cc
diff --git a/src/compiler/instruction.cc b/src/compiler/instruction.cc
index 5ca3600375aafd8f4b7bd5d55a0742235d732702..1ef42d6bccee432e02db647cbe9631b8c76e2177 100644
--- a/src/compiler/instruction.cc
+++ b/src/compiler/instruction.cc
@@ -61,16 +61,14 @@ FlagsCondition CommuteFlagsCondition(FlagsCondition condition) {
 }
 
 bool InstructionOperand::InterferesWith(const InstructionOperand& that) const {
-  if (!IsFPRegister() || !that.IsFPRegister()) return EqualsCanonicalized(that);
-
+  if (!IsFPRegister() || !that.IsFPRegister() || kSimpleFPAliasing)
+    return EqualsCanonicalized(that);
+  // Both operands are fp registers and aliasing is non-simple.
   const LocationOperand& loc1 = *LocationOperand::cast(this);
   const LocationOperand& loc2 = LocationOperand::cast(that);
-  const RegisterConfiguration* config = GetRegConfig();
-  if (config->fp_aliasing_kind() != RegisterConfiguration::COMBINE)
-    return loc1.register_code() == loc2.register_code();
-
-  return config->AreAliases(loc1.representation(), loc1.register_code(),
-                            loc2.representation(), loc2.register_code());
+  return GetRegConfig()->AreAliases(loc1.representation(), loc1.register_code(),
+                                    loc2.representation(),
+                                    loc2.register_code());
 }
 
 void InstructionOperand::Print(const RegisterConfiguration* config) const {