From 4bb83350d48a512294f661a484353481b97e7360 Mon Sep 17 00:00:00 2001 From: Jan Hubicka Date: Mon, 11 Jun 2001 15:49:24 +0200 Subject: [PATCH] * jump.c (duplicate_loop_exit_test): Fix loop header heuristics. From-SVN: r43189 --- gcc/ChangeLog | 4 ++++ gcc/jump.c | 9 +++++---- 2 files changed, 9 insertions(+), 4 deletions(-) diff --git a/gcc/ChangeLog b/gcc/ChangeLog index c39562b2ca4..5f480ff643b 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,7 @@ +Mon Jun 11 15:47:45 CEST 2001 Jan Hubicka + + * jump.c (duplicate_loop_exit_test): Fix loop header heuristics. + 2001-06-11 Joseph S. Myers * c-decl.c (store_parm_decls): When comparing types in an diff --git a/gcc/jump.c b/gcc/jump.c index 067b7aafcdc..cc87b687641 100644 --- a/gcc/jump.c +++ b/gcc/jump.c @@ -1257,10 +1257,11 @@ duplicate_loop_exit_test (loop_start) rtx label = JUMP_LABEL (copy); if (label) { - if (PREV_INSN (label) - && GET_CODE (PREV_INSN (label)) == NOTE - && (NOTE_LINE_NUMBER (PREV_INSN (label)) - == NOTE_INSN_LOOP_CONT)) + /* The jump_insn after loop_start should be followed + by barrier and loopback label. */ + if (prev_nonnote_insn (label) + && (PREV_INSN (prev_nonnote_insn (label)) + == NEXT_INSN (loop_start))) predict_insn_def (copy, PRED_LOOP_HEADER, TAKEN); else predict_insn_def (copy, PRED_LOOP_HEADER, NOT_TAKEN); -- 2.30.2