Add code comment to ia32 disassembly as well, bug fix new ia32 compiler, remove use of TMP register…

runtime/vm/flow_graph_compiler_x64.cc

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "vm/globals.h"  // Needed here to get TARGET_ARCH_X64.
 #if defined(TARGET_ARCH_X64)
 
 #include "vm/flow_graph_compiler.h"
 
 #include "lib/error.h"
@@ skipping 910 matching lines @@
   if (local_count > 0) {
     __ movq(RAX, Immediate(reinterpret_cast<intptr_t>(Object::null())));
     const int base = parsed_function().first_stack_local_index();
     for (int i = 0; i < local_count; ++i) {
       // Subtract index i (locals lie at lower addresses than RBP).
       __ movq(Address(RBP, (base - i) * kWordSize), RAX);
     }
   }
 
   // Generate stack overflow check.
-  __ movq(TMP, Immediate(Isolate::Current()->stack_limit_address()));
-  __ cmpq(RSP, Address(TMP, 0));
+  __ movq(RDI, Immediate(Isolate::Current()->stack_limit_address()));
+  __ cmpq(RSP, Address(RDI, 0));
   Label no_stack_overflow;
   __ j(ABOVE, &no_stack_overflow, Assembler::kNearJump);
   GenerateCallRuntime(AstNode::kNoId,
                       function.token_index(),
                       CatchClauseNode::kInvalidTryIndex,
                       kStackOverflowRuntimeEntry);
   __ Bind(&no_stack_overflow);
 
   if (FLAG_print_scopes) {
     // Print the function scope (again) after generating the prologue in order
@@ skipping 86 matching lines @@
   __ cvtsi2sd(result, temp);
   __ Bind(&done);
 }
 
 
 #undef __
 
 }  // namespace dart
 
 #endif  // defined TARGET_ARCH_X64