Add flag --disassemble-optimized to selectively disassemble function with optimized code.

Add flag --disassemble-optimized to selectively disassemble function with optimized code.
Committed: https://code.google.com/p/dart/source/detail?r=10489

[Vyacheslav Egorov (Google), 2012-08-10 10:41:36]

lgtm

https://chromiumcodereview.appspot.com/10827275/diff/1/vm/compiler.cc
File vm/compiler.cc (right):

https://chromiumcodereview.appspot.com/10827275/diff/1/vm/compiler.cc#newcode343
vm/compiler.cc:343: 
add empty line here

[srdjan, 2012-08-10 14:00:10]

DBC

https://chromiumcodereview.appspot.com/10827275/diff/1/vm/compiler.cc
File vm/compiler.cc (right):

https://chromiumcodereview.appspot.com/10827275/diff/1/vm/compiler.cc#newcode393
vm/compiler.cc:393: DisassembleCode(function, true);
I do not understand why you call DisassembleCode twice.
Also, you may want to handle case with --disassemble --disassemble_optimized so
that you do not disassemble more than once.

[Florian Schneider, 2012-08-13 08:26:01]

https://chromiumcodereview.appspot.com/10827275/diff/1/vm/compiler.cc
File vm/compiler.cc (right):

https://chromiumcodereview.appspot.com/10827275/diff/1/vm/compiler.cc#newcode343
vm/compiler.cc:343: 
On 2012/08/10 10:41:36, Vyacheslav Egorov (Google) wrote:
> add empty line here

Done.

https://chromiumcodereview.appspot.com/10827275/diff/1/vm/compiler.cc#newcode393
vm/compiler.cc:393: DisassembleCode(function, true);
On 2012/08/10 14:00:10, srdjan wrote:
> I do not understand why you call DisassembleCode twice.
> Also, you may want to handle case with --disassemble --disassemble_optimized
so
> that you do not disassemble more than once.

This is just to see the non-optimized code together with the optimized code for
all optimized functions. Yes, if --disassemble is on, we don't want to
disassembe twice. I'll fix that.