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

src/crankshaft/x87/lithium-codegen-x87.cc

 // 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.
 
 #if V8_TARGET_ARCH_X87
 
 #include "src/crankshaft/x87/lithium-codegen-x87.h"
 
 #include "src/base/bits.h"
 #include "src/code-factory.h"
@@ skipping 5265 matching lines @@
   __ bind(&is_smi);
   if (!input_reg.is(result_reg)) {
     __ mov(result_reg, input_reg);
   }
   __ SmiUntag(result_reg);
   __ ClampUint8(result_reg);
   __ bind(&done);
 }
 
 
-void LCodeGen::DoDoubleBits(LDoubleBits* instr) {
-  X87Register value_reg = ToX87Register(instr->value());
-  Register result_reg = ToRegister(instr->result());
-  X87Fxch(value_reg);
-  __ sub(esp, Immediate(kDoubleSize));
-  __ fst_d(Operand(esp, 0));
-  if (instr->hydrogen()->bits() == HDoubleBits::HIGH) {
-    __ mov(result_reg, Operand(esp, kPointerSize));
-  } else {
-    __ mov(result_reg, Operand(esp, 0));
-  }
-  __ add(esp, Immediate(kDoubleSize));
-}
-
-
 void LCodeGen::DoAllocate(LAllocate* instr) {
   class DeferredAllocate final : public LDeferredCode {
    public:
     DeferredAllocate(LCodeGen* codegen,
                      LAllocate* instr,
                      const X87Stack& x87_stack)
         : LDeferredCode(codegen, x87_stack), instr_(instr) { }
     void Generate() override { codegen()->DoDeferredAllocate(instr_); }
     LInstruction* instr() override { return instr_; }
 
@@ skipping 482 matching lines @@
   __ bind(deferred->exit());
   __ bind(&done);
 }
 
 #undef __
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_X87