Re: [PATCH v2, rtl-optimization]: Fix PR46829, ICE in spill_failure with -fschedule-insns [was: Fixing instability of -fschedule-insns for x86]

[Uros Bizjak <ubizjak at gmail dot com>]

On Sat, Aug 18, 2012 at 10:14 AM, Uros Bizjak <ubizjak@gmail.com> wrote:

> After discussion with Oleg, it looks that it is enough to prevent
> wrong registers in the output of the (multi-output) insn pattern. As
> far as inputs are concerned, combine already handles limited reload
> classes in the right way. The problem with x86 is, that reload tried
> to fix output operand of the multi-output ins, where scheduler already
> moved load of ax register before this insn.
>
> Version 2 of the patch now handles only output operands. Also,
> handling of empty constraints was fixed.

... but here we fail testcase from PR46843... so we HAVE to check
input operands.

Uros.