diff options
| author | Doug Evans <dje@gnu.org> | 1997-07-21 18:07:27 +0000 |
|---|---|---|
| committer | Doug Evans <dje@gnu.org> | 1997-07-21 18:07:27 +0000 |
| commit | 866aa3b64b91e88a50ebe02bf75c39d368bde1cd (patch) | |
| tree | d5764b705755fb4d86d8c452c654e60438d92a91 /gcc/reload1.c | |
| parent | 7c0ae5f17f84a9282e30e828aa06fe4d441ca566 (diff) | |
| download | gcc-866aa3b64b91e88a50ebe02bf75c39d368bde1cd.zip gcc-866aa3b64b91e88a50ebe02bf75c39d368bde1cd.tar.gz gcc-866aa3b64b91e88a50ebe02bf75c39d368bde1cd.tar.bz2 | |
reload1.c (reload_cse_mem_conflict_p): Restore handling of (mem:BLK const0_rtx) meaning all memory is clobbered.
* reload1.c (reload_cse_mem_conflict_p): Restore handling of
(mem:BLK const0_rtx) meaning all memory is clobbered.
From-SVN: r14512
Diffstat (limited to 'gcc/reload1.c')
| -rw-r--r-- | gcc/reload1.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/gcc/reload1.c b/gcc/reload1.c index 564a579..f777c5b 100644 --- a/gcc/reload1.c +++ b/gcc/reload1.c @@ -7668,8 +7668,8 @@ reload_cse_invalidate_regno (regno, mode, clobber) } } -/* The memory at address MEM_BASE is being changed. MEM_MODE is the mode of - the memory reference. Return whether this change will invalidate VAL. */ +/* The memory at address MEM_BASE is being changed. + Return whether this change will invalidate VAL. */ static int reload_cse_mem_conflict_p (mem_base, val) @@ -7696,6 +7696,9 @@ reload_cse_mem_conflict_p (mem_base, val) return 0; case MEM: + if (GET_MODE (mem_base) == BLKmode + || GET_MODE (val) == BLKmode) + return 1; return anti_dependence (val, mem_base); default: |