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| author | Jim Wilson <wilson@cygnus.com> | 1999-11-12 04:34:37 +0000 |
|---|---|---|
| committer | Jim Wilson <wilson@gcc.gnu.org> | 1999-11-11 20:34:37 -0800 |
| commit | d5e3f1513fdfd98ca59738d1fa3ae05b5a766bb5 (patch) | |
| tree | 3dd8c95096c1f522c2a715e7a1e0aaaad407ba71 /gcc/loop.c | |
| parent | f292dac5d54e445c9d0372f109c25932a3888eca (diff) | |
| download | gcc-d5e3f1513fdfd98ca59738d1fa3ae05b5a766bb5.zip gcc-d5e3f1513fdfd98ca59738d1fa3ae05b5a766bb5.tar.gz gcc-d5e3f1513fdfd98ca59738d1fa3ae05b5a766bb5.tar.bz2 | |
Fix yet another gcc2 merge problem, this one broke linux kernel compiles
Fix yet another gcc2 merge problem, this one broke linux kernel compiles
* loop.c (invariant_p, case MEM): Put MEM_VOLATILE_P check back.
From-SVN: r30496
Diffstat (limited to 'gcc/loop.c')
| -rw-r--r-- | gcc/loop.c | 6 |
1 files changed, 6 insertions, 0 deletions
@@ -3301,6 +3301,12 @@ invariant_p (x) return VARRAY_INT (set_in_loop, REGNO (x)) == 0; case MEM: + /* Volatile memory references must be rejected. Do this before + checking for read-only items, so that volatile read-only items + will be rejected also. */ + if (MEM_VOLATILE_P (x)) + return 0; + /* If we had a subroutine call, any location in memory could have been clobbered. We used to test here for volatile and readonly, but true_dependence knows how to do that better |