[builtins] Introduce proper base::ieee754::log.

src/compiler/ia32/code-generator-ia32.cc

 // Copyright 2013 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/compiler/code-generator.h"
 
 #include "src/ast/scopes.h"
 #include "src/compiler/code-generator-impl.h"
 #include "src/compiler/gap-resolver.h"
 #include "src/compiler/node-matchers.h"
@@ skipping 599 matching lines @@
           frame_access_state()->GetFrameOffset(i.InputInt32(0));
       Register base;
       if (offset.from_stack_pointer()) {
         base = esp;
       } else {
         base = ebp;
       }
       __ lea(i.OutputRegister(), Operand(base, offset.offset()));
       break;
     }
+    case kIeee754Float64Log: {
+      // Pass one double as argument on the stack.
+      __ PrepareCallCFunction(2, eax);
+      __ movsd(Operand(esp, 0 * kDoubleSize), i.InputDoubleRegister(0));
+      __ CallCFunction(ExternalReference::ieee754_log_function(isolate()), 2);
+      // Return value is in st(0) on ia32.
+      // Store it into the result register.
+      __ sub(esp, Immediate(kDoubleSize));
+      __ fstp_d(Operand(esp, 0));
+      __ movsd(i.OutputDoubleRegister(), Operand(esp, 0));
+      __ add(esp, Immediate(kDoubleSize));
+      break;
+    }
     case kIA32Add:
       if (HasImmediateInput(instr, 1)) {
         __ add(i.InputOperand(0), i.InputImmediate(1));
       } else {
         __ add(i.InputRegister(0), i.InputOperand(1));
       }
       break;
     case kIA32And:
       if (HasImmediateInput(instr, 1)) {
         __ and_(i.InputOperand(0), i.InputImmediate(1));
@@ skipping 183 matching lines @@
       break;
     case kIA32Lzcnt:
       __ Lzcnt(i.OutputRegister(), i.InputOperand(0));
       break;
     case kIA32Tzcnt:
       __ Tzcnt(i.OutputRegister(), i.InputOperand(0));
       break;
     case kIA32Popcnt:
       __ Popcnt(i.OutputRegister(), i.InputOperand(0));
       break;
-    case kX87Float64Log:
-      __ sub(esp, Immediate(kDoubleSize));
-      __ movsd(Operand(esp, 0), i.InputDoubleRegister(0));
-      __ fldln2();
-      __ fld_d(Operand(esp, 0));
-      __ fyl2x();
-      __ fstp_d(Operand(esp, 0));
-      __ movsd(i.OutputDoubleRegister(), Operand(esp, 0));
-      __ add(esp, Immediate(kDoubleSize));
-      break;
     case kSSEFloat32Cmp:
       __ ucomiss(i.InputDoubleRegister(0), i.InputOperand(1));
       break;
     case kSSEFloat32Add:
       __ addss(i.InputDoubleRegister(0), i.InputOperand(1));
       break;
     case kSSEFloat32Sub:
       __ subss(i.InputDoubleRegister(0), i.InputOperand(1));
       break;
     case kSSEFloat32Mul:
@@ skipping 1129 matching lines @@
     int padding_size = last_lazy_deopt_pc_ + space_needed - current_pc;
     __ Nop(padding_size);
   }
 }
 
 #undef __
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8