[wasm] remove faux code objects

src/compiler/arm64/code-generator-arm64.cc

 // 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.
 
 #include "src/compiler/code-generator.h"
 
 #include "src/arm64/frames-arm64.h"
 #include "src/arm64/macro-assembler-arm64.h"
 #include "src/ast/scopes.h"
 #include "src/compiler/code-generator-impl.h"
@@ skipping 555 matching lines @@
   __ bind(&done);
 }
 
 // Assembles an instruction after register allocation, producing machine code.
 CodeGenerator::CodeGenResult CodeGenerator::AssembleArchInstruction(
     Instruction* instr) {
   Arm64OperandConverter i(this, instr);
   InstructionCode opcode = instr->opcode();
   ArchOpcode arch_opcode = ArchOpcodeField::decode(opcode);
   switch (arch_opcode) {
+    case kArchCallWasmFunction: {
+      DCHECK(instr->InputAt(0)->IsImmediate());
+      Constant callee_operand = i.ToConstant(instr->InputAt(0));
+      DCHECK(callee_operand.type() == Constant::Type::kInt32);
+      __ Call(reinterpret_cast<Address>(callee_operand.ToInt32()),
+              callee_operand.rmode());
+      RecordCallPosition(instr);
+      // TODO(titzer): this is ugly. JSSP should be a caller-save register
+      // in this case, but it is not possible to express in the register
+      // allocator.
+      CallDescriptor::Flags flags(MiscField::decode(opcode));
+      if (flags & CallDescriptor::kRestoreJSSP) {
+        __ Ldr(jssp, MemOperand(csp));
+        __ Mov(csp, jssp);
+      }
+      if (flags & CallDescriptor::kRestoreCSP) {
+        __ Mov(csp, jssp);
+        __ AssertCspAligned();
+      }
+      frame_access_state()->ClearSPDelta();
+      break;
+    }
     case kArchCallCodeObject: {
       EnsureSpaceForLazyDeopt();
       if (instr->InputAt(0)->IsImmediate()) {
         __ Call(Handle<Code>::cast(i.InputHeapObject(0)),
                 RelocInfo::CODE_TARGET);
       } else {
         Register target = i.InputRegister(0);
         __ Add(target, target, Code::kHeaderSize - kHeapObjectTag);
         __ Call(target);
       }
@@ skipping 1341 matching lines @@
       padding_size -= kInstructionSize;
     }
   }
 }
 
 #undef __
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8