Convert Linkage to use MachineSignature.

src/compiler/arm/code-generator-arm.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/arm/macro-assembler-arm.h"
 #include "src/compiler/code-generator-impl.h"
 #include "src/compiler/gap-resolver.h"
 #include "src/compiler/node-matchers.h"
@@ skipping 138 matching lines @@
       } else {
         __ add(ip, i.InputRegister(0),
                Operand(Code::kHeaderSize - kHeapObjectTag));
         __ Call(ip);
       }
       AddSafepointAndDeopt(instr);
       DCHECK_EQ(LeaveCC, i.OutputSBit());
       break;
     }
     case kArchCallJSFunction: {
-      // TODO(jarin) The load of the context should be separated from the call.
       Register func = i.InputRegister(0);
-      __ ldr(cp, FieldMemOperand(func, JSFunction::kContextOffset));
+      if (FLAG_debug_code) {
+        // Check the function's context matches the context argument.
+        __ ldr(kScratchReg, FieldMemOperand(func, JSFunction::kContextOffset));
+        __ cmp(cp, kScratchReg);
+        __ Assert(eq, kWrongFunctionContext);
+      }
       __ ldr(ip, FieldMemOperand(func, JSFunction::kCodeEntryOffset));
       __ Call(ip);
       AddSafepointAndDeopt(instr);
       DCHECK_EQ(LeaveCC, i.OutputSBit());
       break;
     }
     case kArchDrop: {
       int words = MiscField::decode(instr->opcode());
       __ Drop(words);
       DCHECK_LT(0, words);
@@ skipping 502 matching lines @@
       // Restore registers.
       const RegList saves = descriptor->CalleeSavedRegisters();
       if (saves != 0) {
         __ ldm(ia_w, sp, saves);
       }
     }
     __ LeaveFrame(StackFrame::MANUAL);
     __ Ret();
   } else {
     __ LeaveFrame(StackFrame::MANUAL);
-    int pop_count =
-        descriptor->IsJSFunctionCall() ? descriptor->ParameterCount() : 0;
+    int pop_count = descriptor->IsJSFunctionCall()
+                        ? static_cast<int>(descriptor->JSParameterCount())
+                        : 0;
     __ Drop(pop_count);
     __ Ret();
   }
 }
 
 
 void CodeGenerator::AssembleMove(InstructionOperand* source,
                                  InstructionOperand* destination) {
   ArmOperandConverter g(this, NULL);
   // Dispatch on the source and destination operand kinds.  Not all
@@ skipping 143 matching lines @@
 
 void CodeGenerator::AddNopForSmiCodeInlining() {
   // On 32-bit ARM we do not insert nops for inlined Smi code.
 }
 
 #undef __
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8