diff options
| author | rth <rth@138bc75d-0d04-0410-961f-82ee72b054a4> | 1999-03-07 02:00:27 +0000 |
|---|---|---|
| committer | rth <rth@138bc75d-0d04-0410-961f-82ee72b054a4> | 1999-03-07 02:00:27 +0000 |
| commit | fa3954ef92d98180019e914f6d7f56d06ae43b11 (patch) | |
| tree | 7fd18861b5e0d57d9c624befe4a4bba79c8006eb /gcc/cse.c | |
| parent | b512966aea6a49f01bc7cfcef0d4ec95b128c11d (diff) | |
| download | gcc-fa3954ef92d98180019e914f6d7f56d06ae43b11.tar.gz | |
* cse.c (canon_hash): Never reject hard regs in CCmode.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@25623 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/cse.c')
| -rw-r--r-- | gcc/cse.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/gcc/cse.c b/gcc/cse.c index 0852615d031..7d9690899e5 100644 --- a/gcc/cse.c +++ b/gcc/cse.c @@ -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; |