[intrinsics] Kill the %_IsMinusZero intrinsic.

src/crankshaft/arm64/lithium-arm64.h

 // 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.
 
 #ifndef V8_CRANKSHAFT_ARM64_LITHIUM_ARM64_H_
 #define V8_CRANKSHAFT_ARM64_LITHIUM_ARM64_H_
 
 #include "src/crankshaft/hydrogen.h"
 #include "src/crankshaft/lithium.h"
 #include "src/crankshaft/lithium-allocator.h"
@@ skipping 37 matching lines @@
   V(CheckValue)                              \
   V(ClampDToUint8)                           \
   V(ClampIToUint8)                           \
   V(ClampTToUint8)                           \
   V(ClassOfTestAndBranch)                    \
   V(CmpHoleAndBranchD)                       \
   V(CmpHoleAndBranchT)                       \
   V(CmpMapAndBranch)                         \
   V(CmpObjectEqAndBranch)                    \
   V(CmpT)                                    \
-  V(CompareMinusZeroAndBranch)               \
   V(CompareNumericAndBranch)                 \
   V(ConstantD)                               \
   V(ConstantE)                               \
   V(ConstantI)                               \
   V(ConstantS)                               \
   V(ConstantT)                               \
   V(ConstructDouble)                         \
   V(Context)                                 \
   V(DebugBreak)                              \
   V(DeclareGlobals)                          \
@@ skipping 1070 matching lines @@
 
   DECLARE_CONCRETE_INSTRUCTION(CmpT, "cmp-t")
   DECLARE_HYDROGEN_ACCESSOR(CompareGeneric)
 
   Strength strength() { return hydrogen()->strength(); }
 
   Token::Value op() const { return hydrogen()->token(); }
 };
 
 
-class LCompareMinusZeroAndBranch final : public LControlInstruction<1, 1> {
- public:
-  LCompareMinusZeroAndBranch(LOperand* value, LOperand* temp) {
-    inputs_[0] = value;
-    temps_[0] = temp;
-  }
-
-  LOperand* value() { return inputs_[0]; }
-  LOperand* temp() { return temps_[0]; }
-
-  DECLARE_CONCRETE_INSTRUCTION(CompareMinusZeroAndBranch,
-                               "cmp-minus-zero-and-branch")
-  DECLARE_HYDROGEN_ACCESSOR(CompareMinusZeroAndBranch)
-};
-
-
 class LCompareNumericAndBranch final : public LControlInstruction<2, 0> {
  public:
   LCompareNumericAndBranch(LOperand* left, LOperand* right) {
     inputs_[0] = left;
     inputs_[1] = right;
   }
 
   LOperand* left() { return inputs_[0]; }
   LOperand* right() { return inputs_[1]; }
 
@@ skipping 1963 matching lines @@
   DISALLOW_COPY_AND_ASSIGN(LChunkBuilder);
 };
 
 #undef DECLARE_HYDROGEN_ACCESSOR
 #undef DECLARE_CONCRETE_INSTRUCTION
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_CRANKSHAFT_ARM64_LITHIUM_ARM64_H_