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- Subject: LuaJIT optimization bug?
- From: Pierre Chapuis <catwell@...>
- Date: Tue, 16 Aug 2011 17:50:01 +0200
Apparently, I might have found another LuaJIT bug.
I am using git head on OS X 64 bits.
I have code that is supposed to produce deterministic output
and a tool that checks this output. This code involves use of
the FFI among other things.
I have found that the behavior of this code changes depending
on whether or not I add useless instructions in the middle of
it when I use "-O3". For instance, if I add this somewhere in
the middle of a loop:
I get the correct output, but not if I comment it...
I also get the correct output if I use "-O3 -O-fwd".
This bug happens in a rather large program which I cannot publish
and I have not been able to make a snippet that reproduces it.
Is there anything else I can do to help debug this?
Pierre 'catwell' Chapuis