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

test/unittests/compiler/mips64/instruction-selector-mips64-unittest.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 "test/unittests/compiler/instruction-selector-unittest.h"
 
 namespace v8 {
 namespace internal {
 namespace compiler {
 
@@ skipping 24 matching lines @@
 };
 
 struct FPCmp {
   MachInst2 mi;
   FlagsCondition cond;
 };
 
 const FPCmp kFPCmpInstructions[] = {
     {{&RawMachineAssembler::Float64Equal, "Float64Equal", kMips64CmpD,
       kMachFloat64},
-     kUnorderedEqual},
+     kEqual},
     {{&RawMachineAssembler::Float64LessThan, "Float64LessThan", kMips64CmpD,
       kMachFloat64},
-     kUnorderedLessThan},
+     kUnsignedLessThan},
     {{&RawMachineAssembler::Float64LessThanOrEqual, "Float64LessThanOrEqual",
       kMips64CmpD, kMachFloat64},
-     kUnorderedLessThanOrEqual},
+     kUnsignedLessThanOrEqual},
     {{&RawMachineAssembler::Float64GreaterThan, "Float64GreaterThan",
       kMips64CmpD, kMachFloat64},
-     kUnorderedLessThan},
+     kUnsignedLessThan},
     {{&RawMachineAssembler::Float64GreaterThanOrEqual,
       "Float64GreaterThanOrEqual", kMips64CmpD, kMachFloat64},
-     kUnorderedLessThanOrEqual}};
+     kUnsignedLessThanOrEqual}};
 
 struct Conversion {
   // The machine_type field in MachInst1 represents the destination type.
   MachInst1 mi;
   MachineType src_machine_type;
 };
 
 
 // ----------------------------------------------------------------------------
 // Logical instructions.
@@ skipping 730 matching lines @@
     ASSERT_EQ(2U, s[0]->InputCount());
     EXPECT_EQ(1U, s[0]->OutputCount());
     EXPECT_EQ(kFlags_set, s[0]->flags_mode());
     EXPECT_EQ(kEqual, s[0]->flags_condition());
   }
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8