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Re: Fix twolf -funroll-loops -O3 miscompilation (a semi-latent web.c bug)


Il 27/11/2012 13:00, Steven Bosscher ha scritto:
> It all
> starts with PRE creating a REG_EQUAL note that references the register
> that's SET in the insn the note is attached to, but the register is
> live after the insn so from that point of view the note is not
> invalid.

This note seems very very weird.  For one thing, it becomes invalid on
the very instruction where it is created.  I would say that it should
not be there.

Paolo


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