MatCat.OpenSource/8sa1-gcc
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

(emit_libcall_block): Don't move insns that reference things set in

Browse Source 
previous insns.

From-SVN: r5268
This commit is contained in:
Richard Kenner 1993-09-06 13:27:49 -04:00
parent f8163c9219
commit ccf5f34234
1 changed files with 6 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

9
gcc/optabs.c
View File

@ -2295,9 +2295,10 @@ emit_libcall_block (insns, target, result, equiv)
rtx prev, next, first, last, insn;
/* First emit all insns that set pseudos. Remove them from the list as
we go. Avoid insns that set pseudo which were referenced in previous
we go. Avoid insns that set pseudos which were referenced in previous
insns. These can be generated by move_by_pieces, for example,
to update an address. */
to update an address. Similarly, avoid insns that reference things
set in previous insns. */
for (insn = insns; insn; insn = next)
{
@ -2309,7 +2310,9 @@ emit_libcall_block (insns, target, result, equiv)
&& REGNO (SET_DEST (set)) >= FIRST_PSEUDO_REGISTER
&& (insn == insns
|| (! reg_mentioned_p (SET_DEST (set), PATTERN (insns))
&& ! reg_used_between_p (SET_DEST (set), insns, insn))))
&& ! reg_used_between_p (SET_DEST (set), insns, insn)
&& ! modified_in_p (SET_SRC (set), insns)
&& ! modified_between_p (SET_SRC (set), insns, insn))))
{
if (PREV_INSN (insn))
NEXT_INSN (PREV_INSN (insn)) = next;