[turbofan][arm64] Use immediates instead of MiscField for stack operations.

src/compiler/arm64/instruction-codes-arm64.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_COMPILER_ARM64_INSTRUCTION_CODES_ARM64_H_
 #define V8_COMPILER_ARM64_INSTRUCTION_CODES_ARM64_H_
 
 namespace v8 {
 namespace internal {
 namespace compiler {
@@ skipping 59 matching lines @@
   V(Arm64Sxth32)                   \
   V(Arm64Sxtw)                     \
   V(Arm64Ubfx)                     \
   V(Arm64Ubfx32)                   \
   V(Arm64Bfi)                      \
   V(Arm64TestAndBranch32)          \
   V(Arm64TestAndBranch)            \
   V(Arm64CompareAndBranch32)       \
   V(Arm64Claim)                    \
   V(Arm64Poke)                     \
-  V(Arm64PokePairZero)             \
   V(Arm64PokePair)                 \
   V(Arm64Float64Cmp)               \
   V(Arm64Float64Add)               \
   V(Arm64Float64Sub)               \
   V(Arm64Float64Mul)               \
   V(Arm64Float64Div)               \
   V(Arm64Float64Mod)               \
   V(Arm64Float64Sqrt)              \
   V(Arm64Float64RoundDown)         \
   V(Arm64Float64RoundTiesAway)     \
@@ skipping 50 matching lines @@
   V(Operand2_R_ASR_I) /* %r0 ASR K */                       \
   V(Operand2_R_ROR_I) /* %r0 ROR K */                       \
   V(Operand2_R_UXTB)  /* %r0 UXTB (unsigned extend byte) */ \
   V(Operand2_R_UXTH)  /* %r0 UXTH (unsigned extend halfword) */
 
 }  // namespace internal
 }  // namespace compiler
 }  // namespace v8
 
 #endif  // V8_COMPILER_ARM64_INSTRUCTION_CODES_ARM64_H_