Preserving clobbers in scheduling

[Richard Henderson]

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, ""));



r~