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Fix ia64 abort while compiling gcc.c-torture/unsorted/logic.c. 

* regmove.c (optimize_reg_copy_1): If no REG_DEAD note, check for
	and handle REG_UNUSED note on insn.

From-SVN: r30813
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Jim Wilson 1999-12-07 00:24:38 +00:00 committed by Jim Wilson
parent 402b6c2a7a
commit 124d535f9b
2 changed files with 11 additions and 0 deletions
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3
gcc/ChangeLog
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@ -1,5 +1,8 @@
Mon Dec 6 15:12:14 1999 Jim Wilson <wilson@cygnus.com>
* regmove.c (optimize_reg_copy_1): If no REG_DEAD note, check for
and handle REG_UNUSED note on insn.
* combine.c (force_to_mode, case LSHIFTRT): New local inner_mask. Set
inner_mask instead of mask.

8
gcc/regmove.c
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@ -528,6 +528,14 @@ optimize_reg_copy_1 (insn, dest, src)
REG_NOTES (insn) = note;
}
/* DEST is also dead if INSN has a REG_UNUSED note for DEST. */
if (! dest_death
&& (dest_death = find_regno_note (insn, REG_UNUSED, dregno)))
{
PUT_REG_NOTE_KIND (dest_death, REG_DEAD);
remove_note (insn, dest_death);
}
/* Put death note of DEST on P if we saw it die. */
if (dest_death)
{