runtime/vm/intermediate_language_ia32.cc - Issue 1058793003: A CheckClass instruction that compares against a null class only can be optimized to check instance…

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Unified Diff: runtime/vm/intermediate_language_ia32.cc

Issue 1058793003: A CheckClass instruction that compares against a null class only can be optimized to check instance… (Closed) Base URL: http://dart.googlecode.com/svn/branches/bleeding_edge/dart/

Patch Set: Created 5 years, 9 months ago

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Index: runtime/vm/intermediate_language_ia32.cc

===================================================================

--- runtime/vm/intermediate_language_ia32.cc (revision 44874)

+++ runtime/vm/intermediate_language_ia32.cc (working copy)

@@ -5763,7 +5763,9 @@

const Immediate& raw_null =

Immediate(reinterpret_cast<intptr_t>(Object::null()));

__ cmpl(locs()->in(0).reg(), raw_null);

- __ j(EQUAL, deopt);

+ ASSERT(DeoptIfNull() || DeoptIfNotNull());

+ Condition cond = DeoptIfNull() ? EQUAL : NOT_EQUAL;

+ __ j(cond, deopt);

return;

}

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