[intrinsics] Drop the now obsolete %_DoubleHi and %_DoubleLo intrinsics.

src/crankshaft/mips64/lithium-mips64.h

 // Copyright 2012 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.
 
 #ifndef V8_CRANKSHAFT_MIPS64_LITHIUM_MIPS_H_
 #define V8_CRANKSHAFT_MIPS64_LITHIUM_MIPS_H_
 
 #include "src/crankshaft/hydrogen.h"
 #include "src/crankshaft/lithium.h"
 #include "src/crankshaft/lithium-allocator.h"
@@ skipping 45 matching lines @@
   V(ConstantS)                               \
   V(ConstantT)                               \
   V(Context)                                 \
   V(DebugBreak)                              \
   V(DeclareGlobals)                          \
   V(Deoptimize)                              \
   V(DivByConstI)                             \
   V(DivByPowerOf2I)                          \
   V(DivI)                                    \
   V(DoubleToI)                               \
-  V(DoubleBits)                              \
   V(DoubleToSmi)                             \
   V(Drop)                                    \
   V(Dummy)                                   \
   V(DummyUse)                                \
   V(FastAllocate)                            \
   V(FlooringDivByConstI)                     \
   V(FlooringDivByPowerOf2I)                  \
   V(FlooringDivI)                            \
   V(ForInCacheArray)                         \
   V(ForInPrepareMap)                         \
@@ skipping 2250 matching lines @@
     temps_[0] = temp;
   }
 
   LOperand* unclamped() { return inputs_[0]; }
   LOperand* temp() { return temps_[0]; }
 
   DECLARE_CONCRETE_INSTRUCTION(ClampTToUint8, "clamp-t-to-uint8")
 };
 
 
-class LDoubleBits final : public LTemplateInstruction<1, 1, 0> {
- public:
-  explicit LDoubleBits(LOperand* value) {
-    inputs_[0] = value;
-  }
-
-  LOperand* value() { return inputs_[0]; }
-
-  DECLARE_CONCRETE_INSTRUCTION(DoubleBits, "double-bits")
-  DECLARE_HYDROGEN_ACCESSOR(DoubleBits)
-};
-
-
 class LAllocate final : public LTemplateInstruction<1, 2, 2> {
  public:
   LAllocate(LOperand* context,
             LOperand* size,
             LOperand* temp1,
             LOperand* temp2) {
     inputs_[0] = context;
     inputs_[1] = size;
     temps_[0] = temp1;
     temps_[1] = temp2;
@@ skipping 287 matching lines @@
   DISALLOW_COPY_AND_ASSIGN(LChunkBuilder);
 };
 
 #undef DECLARE_HYDROGEN_ACCESSOR
 #undef DECLARE_CONCRETE_INSTRUCTION
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_CRANKSHAFT_MIPS64_LITHIUM_MIPS_H_