MIPS: [turbofan] Improve code generation for unordered comparisons.

src/compiler/mips64/instruction-selector-mips64.cc

 // Copyright 2014 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/base/bits.h"
 #include "src/compiler/instruction-selector-impl.h"
 #include "src/compiler/node-matchers.h"
 
 namespace v8 {
 namespace internal {
@@ skipping 891 matching lines @@
       case IrOpcode::kInt64LessThan:
         cont->OverwriteAndNegateIfEqual(kSignedLessThan);
         return VisitWord64Compare(selector, value, cont);
       case IrOpcode::kInt64LessThanOrEqual:
         cont->OverwriteAndNegateIfEqual(kSignedLessThanOrEqual);
         return VisitWord64Compare(selector, value, cont);
       case IrOpcode::kUint64LessThan:
         cont->OverwriteAndNegateIfEqual(kUnsignedLessThan);
         return VisitWord64Compare(selector, value, cont);
       case IrOpcode::kFloat64Equal:
-        cont->OverwriteAndNegateIfEqual(kUnorderedEqual);
+        cont->OverwriteAndNegateIfEqual(kEqual);
         return VisitFloat64Compare(selector, value, cont);
       case IrOpcode::kFloat64LessThan:
-        cont->OverwriteAndNegateIfEqual(kUnorderedLessThan);
+        cont->OverwriteAndNegateIfEqual(kUnsignedLessThan);
         return VisitFloat64Compare(selector, value, cont);
       case IrOpcode::kFloat64LessThanOrEqual:
-        cont->OverwriteAndNegateIfEqual(kUnorderedLessThanOrEqual);
+        cont->OverwriteAndNegateIfEqual(kUnsignedLessThanOrEqual);
         return VisitFloat64Compare(selector, value, cont);
       case IrOpcode::kProjection:
         // Check if this is the overflow output projection of an
         // <Operation>WithOverflow node.
         if (OpParameter<size_t>(value) == 1u) {
           // We cannot combine the <Operation>WithOverflow with this branch
           // unless the 0th projection (the use of the actual value of the
           // <Operation> is either NULL, which means there's no use of the
           // actual value, or was already defined, which means it is scheduled
           // *AFTER* this branch).
@@ skipping 113 matching lines @@
 }
 
 
 void InstructionSelector::VisitUint64LessThan(Node* node) {
   FlagsContinuation cont(kUnsignedLessThan, node);
   VisitWord64Compare(this, node, &cont);
 }
 
 
 void InstructionSelector::VisitFloat64Equal(Node* node) {
-  FlagsContinuation cont(kUnorderedEqual, node);
+  FlagsContinuation cont(kEqual, node);
   VisitFloat64Compare(this, node, &cont);
 }
 
 
 void InstructionSelector::VisitFloat64LessThan(Node* node) {
-  FlagsContinuation cont(kUnorderedLessThan, node);
+  FlagsContinuation cont(kUnsignedLessThan, node);
   VisitFloat64Compare(this, node, &cont);
 }
 
 
 void InstructionSelector::VisitFloat64LessThanOrEqual(Node* node) {
-  FlagsContinuation cont(kUnorderedLessThanOrEqual, node);
+  FlagsContinuation cont(kUnsignedLessThanOrEqual, node);
   VisitFloat64Compare(this, node, &cont);
 }
 
 
 // static
 MachineOperatorBuilder::Flags
 InstructionSelector::SupportedMachineOperatorFlags() {
   return MachineOperatorBuilder::kFloat64Floor |
          MachineOperatorBuilder::kFloat64Ceil |
          MachineOperatorBuilder::kFloat64RoundTruncate;
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8