[turbofan]: Fix TurboFan for out-of-line constant pool on Arm.

Use LeaveFrame so that the constant pool pointer register is correctly restored
when using the out-of-line constant pool.  Also clean up duplicate code in
builtins-arm.cc.

R=bmeurer@chromium.org

Review URL: https://codereview.chromium.org/469283002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@23134 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/arm/builtins-arm.cc

@@ -1422,13 +1422,7 @@ static void LeaveArgumentsAdaptorFrame(MacroAssembler* masm) {
   __ ldr(r1, MemOperand(fp, -(StandardFrameConstants::kFixedFrameSizeFromFp +
                               kPointerSize)));
 
-  if (FLAG_enable_ool_constant_pool) {
-    __ add(sp, fp, Operand(StandardFrameConstants::kConstantPoolOffset));
-    __ ldm(ia_w, sp, pp.bit() | fp.bit() | lr.bit());
-  } else {
-    __ mov(sp, fp);;
-    __ ldm(ia_w, sp, fp.bit() | lr.bit());
-  }
+  __ LeaveFrame(StackFrame::ARGUMENTS_ADAPTOR);
   __ add(sp, sp, Operand::PointerOffsetFromSmiKey(r1));
   __ add(sp, sp, Operand(kPointerSize));  // adjust for receiver
 }

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

@@ -665,12 +665,10 @@ void CodeGenerator::AssembleReturn() {
         __ ldm(ia_w, sp, saves);
       }
     }
-    __ mov(sp, fp);
-    __ ldm(ia_w, sp, fp.bit() | lr.bit());
+    __ LeaveFrame(StackFrame::MANUAL);
     __ Ret();
   } else {
-    __ mov(sp, fp);
-    __ ldm(ia_w, sp, fp.bit() | lr.bit());
+    __ LeaveFrame(StackFrame::MANUAL);
     int pop_count =
         descriptor->IsJSFunctionCall() ? descriptor->ParameterCount() : 0;
     __ Drop(pop_count);