diff options
Diffstat (limited to 'gcc/loop.c')
| -rw-r--r-- | gcc/loop.c | 15 |
1 files changed, 11 insertions, 4 deletions
diff --git a/gcc/loop.c b/gcc/loop.c index b616be0d524..ef64fd08be7 100644 --- a/gcc/loop.c +++ b/gcc/loop.c @@ -2564,14 +2564,21 @@ verify_dominator (loop_number) && GET_CODE (PATTERN (insn)) != RETURN) { rtx label = JUMP_LABEL (insn); - int label_luid = INSN_LUID (label); - - if (! condjump_p (insn) - && ! condjump_in_parallel_p (insn)) + int label_luid; + + /* If it is not a jump we can easily understand or for + which we do not have jump target information in the JUMP_LABEL + field (consider ADDR_VEC and ADDR_DIFF_VEC insns), then clear + LOOP_NUMBER_CONT_DOMINATOR. */ + if ((! condjump_p (insn) + && ! condjump_in_parallel_p (insn)) + || label == NULL_RTX) { loop_number_cont_dominator[loop_number] = NULL_RTX; return; } + + label_luid = INSN_LUID (label); if (label_luid < INSN_LUID (loop_number_loop_cont[loop_number]) && (label_luid > INSN_LUID (loop_number_cont_dominator[loop_number]))) |