[builtins] Introduce proper Float64Tan operator.

src/crankshaft/ia32/lithium-codegen-ia32.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_IA32
 
 #include "src/crankshaft/ia32/lithium-codegen-ia32.h"
 
 #include "src/base/bits.h"
 #include "src/code-factory.h"
@@ skipping 4806 matching lines @@
       XMMRegister xmm_scratch = double_scratch0();
       __ pshufd(xmm_scratch, value_reg, 1);
       __ movd(result_reg, xmm_scratch);
     }
   } else {
     __ movd(result_reg, value_reg);
   }
 }
 
 
-void LCodeGen::DoConstructDouble(LConstructDouble* instr) {
-  Register hi_reg = ToRegister(instr->hi());
-  Register lo_reg = ToRegister(instr->lo());
-  XMMRegister result_reg = ToDoubleRegister(instr->result());
-
-  if (CpuFeatures::IsSupported(SSE4_1)) {
-    CpuFeatureScope scope2(masm(), SSE4_1);
-    __ movd(result_reg, lo_reg);
-    __ pinsrd(result_reg, hi_reg, 1);
-  } else {
-    XMMRegister xmm_scratch = double_scratch0();
-    __ movd(result_reg, hi_reg);
-    __ psllq(result_reg, 32);
-    __ movd(xmm_scratch, lo_reg);
-    __ orps(result_reg, xmm_scratch);
-  }
-}
-
-
 void LCodeGen::DoAllocate(LAllocate* instr) {
   class DeferredAllocate final : public LDeferredCode {
    public:
     DeferredAllocate(LCodeGen* codegen,  LAllocate* instr)
         : LDeferredCode(codegen), instr_(instr) { }
     void Generate() override { codegen()->DoDeferredAllocate(instr_); }
     LInstruction* instr() override { return instr_; }
 
    private:
     LAllocate* instr_;
@@ skipping 475 matching lines @@
   __ bind(deferred->exit());
   __ bind(&done);
 }
 
 #undef __
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_IA32