pa reload problem

[Michael Meissner]

On Fri, Dec 08, 2000 at 03:45:27PM -0800, Richard Henderson wrote:
> On Fri, Dec 08, 2000 at 05:05:21PM -0500, John David Anglin wrote:
> > I am wondering if side_effects_p should return 1 if it encounters
> > an UNSPEC.
> 
> No, because an UNSPEC has no side effects.

To be pedantic, an UNSPEC by itself has no side effects, but obviously an
UNSPEC could have arguments that use PRE_DEC, PRE_INC, POST_MODIFY, etc.

> As I said before, the simplest thing is to check for general_operand
> before creating the REG_EQUAL note.  Any other solution requires reload
> to Do Things to the INSN_CODE during rematerialization.

-- 
Michael Meissner, Red Hat, Inc.
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