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author | Andrew Haley <aph@redhat.com> | 2002-10-01 12:19:36 +0000 |
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committer | Andrew Haley <aph@gcc.gnu.org> | 2002-10-01 12:19:36 +0000 |
commit | a646f6ccc1113db8d1faeb1a902b44c1c7774e8c (patch) | |
tree | 150e6abd5f8f691ae4cd7d2c2f60135ff3b9682d /gcc/flow.c | |
parent | 3f7967e390a7cb0a06527a5ebf8a7f6a040b047b (diff) | |
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flow.c (insn_dead_p): When using non-call-exceptions, don't eliminate insns that may trap.
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.
From-SVN: r57688
Diffstat (limited to 'gcc/flow.c')
-rw-r--r-- | gcc/flow.c | 4 |
1 files changed, 4 insertions, 0 deletions
@@ -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. */ |