diff options
Diffstat (limited to 'gcc/cselib.c')
| -rw-r--r-- | gcc/cselib.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/gcc/cselib.c b/gcc/cselib.c index 4070da7c01f..46053885721 100644 --- a/gcc/cselib.c +++ b/gcc/cselib.c @@ -1473,9 +1473,11 @@ cselib_init (bool record_memory) sizeof (cselib_val), 10); value_pool = create_alloc_pool ("value", RTX_CODE_SIZE (VALUE), 100); cselib_record_memory = record_memory; - /* This is only created once. */ + + /* (mem:BLK (scratch)) is a special mechanism to conflict with everything, + see canon_true_dependence. This is only created once. */ if (! callmem) - callmem = gen_rtx_MEM (BLKmode, const0_rtx); + callmem = gen_rtx_MEM (BLKmode, gen_rtx_SCRATCH (VOIDmode)); cselib_nregs = max_reg_num (); |