diff options
Diffstat (limited to 'gcc/ifcvt.c')
| -rw-r--r-- | gcc/ifcvt.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/gcc/ifcvt.c b/gcc/ifcvt.c index 569b9bf..db5b8a2 100644 --- a/gcc/ifcvt.c +++ b/gcc/ifcvt.c @@ -1112,12 +1112,13 @@ noce_try_store_flag_constants (struct noce_if_info *if_info) ifalse = INTVAL (if_info->a); itrue = INTVAL (if_info->b); + diff = (unsigned HOST_WIDE_INT) itrue - ifalse; /* Make sure we can represent the difference between the two values. */ - if ((itrue - ifalse > 0) + if ((diff > 0) != ((ifalse < 0) != (itrue < 0) ? ifalse < 0 : ifalse < itrue)) return FALSE; - diff = trunc_int_for_mode (itrue - ifalse, mode); + diff = trunc_int_for_mode (diff, mode); can_reverse = (reversed_comparison_code (if_info->cond, if_info->jump) != UNKNOWN); @@ -1148,7 +1149,7 @@ noce_try_store_flag_constants (struct noce_if_info *if_info) if (reversep) { tmp = itrue; itrue = ifalse; ifalse = tmp; - diff = trunc_int_for_mode (-diff, mode); + diff = trunc_int_for_mode (-(unsigned HOST_WIDE_INT) diff, mode); } start_sequence (); |