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Re: Preserving clobbers in scheduling
On Thu, Aug 30, 2001 at 01:04:00AM -0400, Jeff Sturm wrote:
> Since SPARC uses %i0-i3 for EH return data, the above applies in this
> case. And the clobber works as expected, if not for the scheduling pass,
> where it is moved beyond the insns that are dependent on it.
Do this right after the clobbers:
/* @@@ This is a kludge. Not all machine descriptions define a blockage
insn, but we must not allow the code we just generated to be reordered
by scheduling. So emit an ASM_INPUT to act as blockage insn. */
emit_insn (gen_rtx_ASM_INPUT (VOIDmode, ""));