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| author | aph <aph@138bc75d-0d04-0410-961f-82ee72b054a4> | 2002-10-01 12:19:36 +0000 |
|---|---|---|
| committer | aph <aph@138bc75d-0d04-0410-961f-82ee72b054a4> | 2002-10-01 12:19:36 +0000 |
| commit | 8ca56a3b4098543949892fa278f23a83b87d5e5b (patch) | |
| tree | 150e6abd5f8f691ae4cd7d2c2f60135ff3b9682d /gcc/flow.c | |
| parent | e37591328350c2127733aa35f9a3013d4619478c (diff) | |
| download | gcc-8ca56a3b4098543949892fa278f23a83b87d5e5b.tar.gz | |
2002-09-30 Andrew Haley <aph@redhat.com>
* flow.c (insn_dead_p): When using non-call-exceptions, don't
eliminate insns that may trap.
* cse.c (insn_live_p): Likewise.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@57688 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/flow.c')
| -rw-r--r-- | gcc/flow.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/gcc/flow.c b/gcc/flow.c index 2905917cbcc..d9e3ae3ce40 100644 --- a/gcc/flow.c +++ b/gcc/flow.c @@ -2110,6 +2110,10 @@ insn_dead_p (pbi, x, call_ok, notes) { enum rtx_code code = GET_CODE (x); + /* Don't eliminate insns that may trap. */ + if (flag_non_call_exceptions && may_trap_p (x)) + return 0; + #ifdef AUTO_INC_DEC /* As flow is invoked after combine, we must take existing AUTO_INC expressions into account. */ |