[Bug optimization/12630] [3.4 regression] Various unrecognizable insns and ICEs at -O3

[dave at hiauly1 dot hia dot nrc dot ca]

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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12630



------- Additional Comments From dave at hiauly1 dot hia dot nrc dot ca  2003-10-20 22:06 -------
Subject: Re:  [3.4 regression] Various unrecognizable

> > Switching from match_dup to match_scratch introduced a need for two
> additional
> > temporaries.  We only have one register in the class R1_REGS.
> 
> Why these two temporaries are needed?
> R1_REGS has constraint 'a' that is not used in the pattern at all so why
> reload chooses to use it?

I don't know.  The PA backend only uses class R1_REGS for two very specific
situations and this isn't one of them.

Dave