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| author | Richard Henderson <rth@redhat.com> | 2002-03-25 16:30:35 -0800 |
|---|---|---|
| committer | Richard Henderson <rth@gcc.gnu.org> | 2002-03-25 16:30:35 -0800 |
| commit | 6b2e80b7b46f99a60eefaa349e1cce2bb50344cd (patch) | |
| tree | c4f8d4bdc6a7c010706486f85f40149100773970 /gcc | |
| parent | 9ad6276f020d76c928e1b64167e32208bd012dc5 (diff) | |
| download | gcc-6b2e80b7b46f99a60eefaa349e1cce2bb50344cd.zip gcc-6b2e80b7b46f99a60eefaa349e1cce2bb50344cd.tar.gz gcc-6b2e80b7b46f99a60eefaa349e1cce2bb50344cd.tar.bz2 | |
recog.c (peephole2_optimize): Distribute EH_REGION -1 notes anywhere in the block.
* recog.c (peephole2_optimize): Distribute EH_REGION -1 notes
anywhere in the block. Don't refer to insns that have been
removed from the chain. Iterate backward through the new insns.
Don't refer to edges that have been removed.
From-SVN: r51357
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 7 | ||||
| -rw-r--r-- | gcc/recog.c | 30 |
2 files changed, 27 insertions, 10 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index bab7fdd..e030917 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,10 @@ +2002-03-25 Richard Henderson <rth@redhat.com> + + * recog.c (peephole2_optimize): Distribute EH_REGION -1 notes + anywhere in the block. Don't refer to insns that have been + removed from the chain. Iterate backward through the new insns. + Don't refer to edges that have been removed. + 2002-03-26 Alan Modra <amodra@bigpond.net.au> * combine.c (simplify_comparison <ASHIFTRT, LSHIFTRT>): Correct diff --git a/gcc/recog.c b/gcc/recog.c index 769c267..3289f6e 100644 --- a/gcc/recog.c +++ b/gcc/recog.c @@ -3045,7 +3045,7 @@ peephole2_optimize (dump_file) prev = PREV_INSN (insn); if (INSN_P (insn)) { - rtx try; + rtx try, before_try; int match_len; rtx note; @@ -3128,14 +3128,16 @@ peephole2_optimize (dump_file) if (i >= MAX_INSNS_PER_PEEP2 + 1) i -= MAX_INSNS_PER_PEEP2 + 1; + note = find_reg_note (peep2_insn_data[i].insn, + REG_EH_REGION, NULL_RTX); + /* Replace the old sequence with the new. */ try = emit_insn_after (try, peep2_insn_data[i].insn); + before_try = PREV_INSN (insn); delete_insn_chain (insn, peep2_insn_data[i].insn); /* Re-insert the EH_REGION notes. */ - if (try == bb->end - && (note = find_reg_note (peep2_insn_data[i].insn, - REG_EH_REGION, NULL_RTX))) + if (note) { rtx x; edge eh_edge; @@ -3145,11 +3147,11 @@ peephole2_optimize (dump_file) if (eh_edge->flags & EDGE_EH) break; - for (x = NEXT_INSN (peep2_insn_data[i].insn); - x != NEXT_INSN (try); x = NEXT_INSN (x)) + for (x = try ; x != before_try ; x = PREV_INSN (x)) if (GET_CODE (x) == CALL_INSN || (flag_non_call_exceptions - && may_trap_p (PATTERN (x)))) + && may_trap_p (PATTERN (x)) + && !find_reg_note (x, REG_EH_REGION, NULL))) { REG_NOTES (x) = gen_rtx_EXPR_LIST (REG_EH_REGION, @@ -3158,9 +3160,16 @@ peephole2_optimize (dump_file) if (x != bb->end && eh_edge) { - edge nfte = split_block (bb, x); - edge nehe = make_edge (nfte->src, eh_edge->dest, - eh_edge->flags); + edge nfte, nehe; + int flags; + + nfte = split_block (bb, x); + flags = EDGE_EH | EDGE_ABNORMAL; + if (GET_CODE (x) == CALL_INSN) + flags |= EDGE_ABNORMAL_CALL; + nehe = make_edge (nfte->src, eh_edge->dest, + flags); + nehe->probability = eh_edge->probability; nfte->probability = REG_BR_PROB_BASE - nehe->probability; @@ -3171,6 +3180,7 @@ peephole2_optimize (dump_file) changed = true; #endif bb = nfte->src; + eh_edge = nehe; } } |