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reload.c (find_equiv_reg): If need_stable_sp is set, check if stack pointer is changed directly. 

* reload.c (find_equiv_reg): If need_stable_sp is set,
	check if stack pointer is changed directly.

From-SVN: r20984
This commit is contained in:
J"orn Rennecke 1998-07-07 00:18:02 +00:00 committed by Jeff Law
parent 27da1b4d5a
commit 1b4d8b2b5c
2 changed files with 5 additions and 0 deletions
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gcc/ChangeLog
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@ -76,6 +76,9 @@ Mon Jul 6 22:50:48 1998 Jason Merrill <jason@yorick.cygnus.com>
Mon Jul 6 22:47:55 1998 J"orn Rennecke <amylaar@cygnus.co.uk>
* reload.c (find_equiv_reg): If need_stable_sp is set,
check if stack pointer is changed directly.
* reload1.c (delete_dead_insn): Don't delete feeding insn
if that insn has side effects.

2
gcc/reload.c
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@ -6220,6 +6220,8 @@ find_equiv_reg (goal, insn, class, other, reload_reg_p, goalreg, mode)
if (goal_mem_addr_varies
&& reg_overlap_mentioned_for_reload_p (dest, goal))
return 0;
if (xregno == STACK_POINTER_REGNUM && need_stable_sp)
return 0;
}
else if (goal_mem && GET_CODE (dest) == MEM
&& ! push_operand (dest, GET_MODE (dest)))