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Re: Identical? i386.md patterns for TARGET_64BIT and not
- To: Zack Weinberg <zackw at stanford dot edu>
- Subject: Re: Identical? i386.md patterns for TARGET_64BIT and not
- From: Jan Hubicka <jh at suse dot cz>
- Date: Tue, 15 May 2001 12:21:11 +0200
- Cc: gcc at gcc dot gnu dot org, Jan Hubicka <hubicka at freesoft dot cz>
- References: <20010515000823.M774@stanford.edu>
> Why do we need both these insns? As far as I can see the *only*
> difference is that one is TARGET_64BIT and one is !TARGET_64BIT. This
> sort of duplication is widespread.
There is diference in the pointer size:
> (compare:CC (mem:BLK (match_operand:SI 4 "register_operand" "0"))
> (compare:CC (mem:BLK (match_operand:DI 4 "register_operand" "0"))
As Richard mentioned, it may be nice to allow :P in the patterns, as this is
tricky to implement we are still sick on this scheme.