[webkit-dev] x86-64 JIT
mh+webkit at glandium.org
Wed Mar 18 13:47:35 PDT 2009
On Wed, Mar 18, 2009 at 01:07:51PM -0700, Gavin Barraclough wrote:
> On Mar 18, 2009, at 11:06 AM, Mike Hommey wrote:
>> An earlier call to JSC::JITStubs::cti_op_call_NotJSFunction works and a
>> of other stub functions are called before the crash, so it means most
>> the JIT works, but it is failing in a subtle way.
> I'd suggest trying to produce a reduction of the test case your looking
> at – JIT crashers can usually be reduced down to a very small test case.
> You may then want to step though the JIT code to see where the bogus
> value is coming from. Adding calls to breakpoint() from
> JIT::privateCompile and JIT::privateCompileMainPass can help with this,
> inserting breakpoints into the JIT code that the debugger will then hit.
crash. The default homepage, google.com does trigger it, and the much
simpler alert() testcase i found with a quick search crashes too.
I'll give a try to breakpoints when I'll have the occasion.
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