godzil/tack
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

set limit on optimization passes to prevent loop

Browse Source 
in optimizer in case of bad table.
This commit is contained in:
em 1986-09-09 13:10:15 +00:00
parent 1939e147a4
commit af1c3f29a8
1 changed files with 4 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
util/opt/peephole.c
View File

@ -609,7 +609,9 @@ basicblock(alpp) line_p *alpp; {
register byte *bp;
int i;
short index;
int npasses;
npasses = 0;
do { /* make pass over basicblock */
lpp = alpp; madeopt = FALSE;
while ((*lpp) != (line_p) 0 && ((*lpp)->l_instr&BMASK) != op_lab) {
@ -648,5 +650,6 @@ basicblock(alpp) line_p *alpp; {
}
lpp = next;
}
} while(madeopt); /* as long as there is progress */
} while(madeopt && ++npasses<5000); /* as long as there is progress */
assert(!madeopt);
}