diff options
Diffstat (limited to 'gcc/cse.c')
| -rw-r--r-- | gcc/cse.c | 10 |
1 files changed, 8 insertions, 2 deletions
@@ -2009,7 +2009,12 @@ canon_hash (x, mode) /* On some machines, we can't record any non-fixed hard register, because extending its life will cause reload problems. We - consider ap, fp, and sp to be fixed for this purpose. + consider ap, fp, and sp to be fixed for this purpose. + + We also consider CCmode registers to be fixed for this purpose; + failure to do so leads to failure to simplify 0<100 type of + conditionals. + On all machines, we can't record any global registers. */ if (regno < FIRST_PSEUDO_REGISTER @@ -2019,7 +2024,8 @@ canon_hash (x, mode) && regno != FRAME_POINTER_REGNUM && regno != HARD_FRAME_POINTER_REGNUM && regno != ARG_POINTER_REGNUM - && regno != STACK_POINTER_REGNUM))) + && regno != STACK_POINTER_REGNUM + && GET_MODE_CLASS (GET_MODE (x)) != MODE_CC))) { do_not_record = 1; return 0; |