OpenE2K
/
gcc
2
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

(scan_loop): For the replace_rtx call, copy the rtx that is 

being substituted in before the call.

From-SVN: r8779
This commit is contained in:
Jim Wilson 1995-01-20 17:30:34 -08:00
parent 23ed92ca4c
commit 5eeedd4d9e
1 changed files with 4 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
gcc/loop.c
View File

@ -746,10 +746,12 @@ scan_loop (loop_start, end, nregs)
&& validate_replace_rtx (SET_DEST (set), SET_SRC (set),
reg_single_usage[regno]))
{
/* Replace any usage in a REG_EQUAL note. */
/* Replace any usage in a REG_EQUAL note. Must copy the
new source, so that we don't get rtx sharing between the
SET_SOURCE and REG_NOTES of insn p. */
REG_NOTES (reg_single_usage[regno])
= replace_rtx (REG_NOTES (reg_single_usage[regno]),
SET_DEST (set), SET_SRC (set));
SET_DEST (set), copy_rtx (SET_SRC (set)));
PUT_CODE (p, NOTE);
NOTE_LINE_NUMBER (p) = NOTE_INSN_DELETED;