2008-09-14 Cameron Zwarich <cwzwarich@uwaterloo.ca>

2008-09-14  Cameron Zwarich  <cwzwarich@uwaterloo.ca>

        Reviewed by Oliver Hunt.

        Bug 20816: op_lesseq should be optimized
        <https://bugs.webkit.org/show_bug.cgi?id=20816>

        Add a loop_if_lesseq opcode that is similar to the loop_if_less opcode.

        This is a 9.4% speedup on the V8 Crypto benchmark.

        * VM/CTI.cpp:
        (JSC::CTI::privateCompileMainPass):
        (JSC::CTI::privateCompileSlowCases):
        * VM/CodeBlock.cpp:
        (JSC::CodeBlock::dump):
        * VM/CodeGenerator.cpp:
        (JSC::CodeGenerator::emitJumpIfTrue):
        * VM/Machine.cpp:
        (JSC::Machine::privateExecute):
        (JSC::Machine::cti_op_loop_if_lesseq):
        * VM/Machine.h:
        * VM/Opcode.h:

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@36408 268f45cc-cd09-0410-ab3c-d52691b4dbfc