diff options
Diffstat (limited to 'gcc-4.8/gcc/loop-unswitch.c')
| -rw-r--r-- | gcc-4.8/gcc/loop-unswitch.c | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/gcc-4.8/gcc/loop-unswitch.c b/gcc-4.8/gcc/loop-unswitch.c index 6a12952cc..d3b16b898 100644 --- a/gcc-4.8/gcc/loop-unswitch.c +++ b/gcc-4.8/gcc/loop-unswitch.c @@ -191,6 +191,7 @@ may_unswitch_on (basic_block bb, struct loop *loop, rtx *cinsn) if (!test) return NULL_RTX; + mode = VOIDmode; for (i = 0; i < 2; i++) { op[i] = XEXP (test, i); @@ -205,11 +206,15 @@ may_unswitch_on (basic_block bb, struct loop *loop, rtx *cinsn) return NULL_RTX; op[i] = get_iv_value (&iv, const0_rtx); + if (iv.extend != IV_UNKNOWN_EXTEND + && iv.mode != iv.extend_mode) + op[i] = lowpart_subreg (iv.mode, op[i], iv.extend_mode); + if (mode == VOIDmode) + mode = iv.mode; + else + gcc_assert (mode == iv.mode); } - mode = GET_MODE (op[0]); - if (mode == VOIDmode) - mode = GET_MODE (op[1]); if (GET_MODE_CLASS (mode) == MODE_CC) { if (at != BB_END (bb)) |