Re: [patch] MIPS/gcc: Revert removal of DImode shifts for 32-bit targets

[Richard Henderson <rth@redhat.com>]

On Tue, Aug 31, 2004 at 08:51:20PM +0100, Richard Sandiford wrote:
> int TARGET_SHIFT_TRUNCATION_MASK (enum machine_mode MODE)
...
>      Note that, unlike `SHIFT_COUNT_TRUNCATED', this function does
>      _not_ apply to general shift rtxes; it applies only to instructions
>      that are generated by the named shift patterns.

I'm not particularly thrilled about this notion.  I'd much prefer a
target hook that could replace SHIFT_COUNT_TRUNCATED.  How often are
the named patterns going to differ from the rtxes anyway?


r~