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Re: PATCH: Properly check the end of basic block


On Wed, Nov 17, 2010 at 7:44 AM, H.J. Lu <hongjiu.lu@intel.com> wrote:

> insn != BB_END (bb) && NEXT_INSN (insn) == NEXT_INSN (BB_END (bb))
>
> We should check NEXT_INSN (insn) != NEXT_INSN (BB_END (bb)) in
> move_or_delete_vzeroupper_2. ?This patch does it.

Huh? The loop does simple linear scan of all insns in the bb, so it
can't miss BB_END. IIUC, in your case the bb does not have BB_END
(bb), but it has NEXT_INSN (BB_END (bb))?

Can you please provide a test case that illustrates this?

Uros.


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