diff options
Diffstat (limited to 'gcc/sched.c')
| -rw-r--r-- | gcc/sched.c | 39 |
1 files changed, 27 insertions, 12 deletions
diff --git a/gcc/sched.c b/gcc/sched.c index 87f72932407..477782b2c32 100644 --- a/gcc/sched.c +++ b/gcc/sched.c @@ -4108,21 +4108,36 @@ update_flow_info (notes, first, last, orig_insn) for (insn = first; ; insn = NEXT_INSN (insn)) { - set = single_set (insn); - if (set) + rtx pat; + int i; + + /* I'm not sure if this can happen, but let's be safe. */ + if (GET_RTX_CLASS (GET_CODE (insn)) != 'i') + continue; + + pat = PATTERN (insn); + i = GET_CODE (pat) == PARALLEL ? XVECLEN (pat, 0) : 0; + set = pat; + for (;;) { - if (GET_CODE (SET_DEST (set)) == REG - && REGNO (SET_DEST (set)) == REGNO (orig_dest)) - { - found_orig_dest = 1; - break; - } - else if (GET_CODE (SET_DEST (set)) == SUBREG - && SUBREG_REG (SET_DEST (set)) == orig_dest) + if (GET_CODE (set) == SET) { - found_split_dest = 1; - break; + if (GET_CODE (SET_DEST (set)) == REG + && REGNO (SET_DEST (set)) == REGNO (orig_dest)) + { + found_orig_dest = 1; + break; + } + else if (GET_CODE (SET_DEST (set)) == SUBREG + && SUBREG_REG (SET_DEST (set)) == orig_dest) + { + found_split_dest = 1; + break; + } } + if (--i < 0) + break; + set = XVECEXP (pat, 0, i); } if (insn == last) |