PPC/s390: [builtins] Introduce proper Float64Exp operator.

src/crankshaft/s390/lithium-s390.h

 // 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.
 
 #ifndef V8_CRANKSHAFT_S390_LITHIUM_S390_H_
 #define V8_CRANKSHAFT_S390_LITHIUM_S390_H_
 
 #include "src/crankshaft/hydrogen.h"
 #include "src/crankshaft/lithium.h"
 #include "src/crankshaft/lithium-allocator.h"
@@ skipping 818 matching lines @@
 
 class LMathClz32 final : public LTemplateInstruction<1, 1, 0> {
  public:
   explicit LMathClz32(LOperand* value) { inputs_[0] = value; }
 
   LOperand* value() { return inputs_[0]; }
 
   DECLARE_CONCRETE_INSTRUCTION(MathClz32, "math-clz32")
 };
 
-class LMathExp final : public LTemplateInstruction<1, 1, 3> {
+class LMathExp final : public LTemplateInstruction<1, 1, 0> {
  public:
-  LMathExp(LOperand* value, LOperand* double_temp, LOperand* temp1,
-           LOperand* temp2) {
-    inputs_[0] = value;
-    temps_[0] = temp1;
-    temps_[1] = temp2;
-    temps_[2] = double_temp;
-    ExternalReference::InitializeMathExpData();
-  }
+  explicit LMathExp(LOperand* value) { inputs_[0] = value; }
 
   LOperand* value() { return inputs_[0]; }
-  LOperand* temp1() { return temps_[0]; }
-  LOperand* temp2() { return temps_[1]; }
-  LOperand* double_temp() { return temps_[2]; }
 
   DECLARE_CONCRETE_INSTRUCTION(MathExp, "math-exp")
 };
 
 class LMathSqrt final : public LTemplateInstruction<1, 1, 0> {
  public:
   explicit LMathSqrt(LOperand* value) { inputs_[0] = value; }
 
   LOperand* value() { return inputs_[0]; }
 
@@ skipping 1542 matching lines @@
 
   DISALLOW_COPY_AND_ASSIGN(LChunkBuilder);
 };
 
 #undef DECLARE_HYDROGEN_ACCESSOR
 #undef DECLARE_CONCRETE_INSTRUCTION
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_CRANKSHAFT_S390_LITHIUM_S390_H_