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Re: Patch to split x86 movdi
- To: John Wehle <john at feith dot com>, egcs-patches at egcs dot cygnus dot com
- Subject: Re: Patch to split x86 movdi
- From: Richard Henderson <rth at cygnus dot com>
- Date: Sat, 10 Apr 1999 22:45:55 -0700
- References: <199904110021.UAA04523@jwlab.FEITH.COM>
On Sat, Apr 10, 1999 at 08:21:05PM -0400, John Wehle wrote:
> + (define_split
> + [(set (match_operand:DI 0 "nonimmediate_operand" "")
> + (match_operand:DI 1 "nonimmediate_operand" ""))]
> + "reload_completed && ! reg_overlap_mentioned_p (operands[0], operands[1])"
> + [(set (match_dup 2)
> + (match_dup 4))
> + (set (match_dup 3)
> + (match_dup 5))]
> + "split_di (&operands[0], 1, &operands[2], &operands[3]);
> + split_di (&operands[1], 1, &operands[4], &operands[5]);")
We should be able to trivially handle overlapped register
pairs as well, no?
r~