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| author | hubicka <hubicka@138bc75d-0d04-0410-961f-82ee72b054a4> | 2001-06-18 15:35:47 +0000 |
|---|---|---|
| committer | hubicka <hubicka@138bc75d-0d04-0410-961f-82ee72b054a4> | 2001-06-18 15:35:47 +0000 |
| commit | f6664feec514b2e3b3f36fb59c9b1b14dc5a52fc (patch) | |
| tree | 0803743d2349ea46ce205c05df7cae76a3374b1f /gcc/predict.c | |
| parent | 55af5e57a6fa3e4016d3723e03c3a1926ea9e9ee (diff) | |
| download | ppe42-gcc-f6664feec514b2e3b3f36fb59c9b1b14dc5a52fc.tar.gz ppe42-gcc-f6664feec514b2e3b3f36fb59c9b1b14dc5a52fc.zip | |
* unroll.c: Include predict.h.
(unroll_loop): Drop prediction notes on preconditioning.
* predict.def (PRED_LOOP_PRECONDITIONG, PRED_LOOP_CONDITION):
New; add comments on the others.
* Makefile.in: (unroll.o): Add dependancy on predict.h.
* loop.c (strength_reduce): Fix branch prediction.
* stmt.c (emit_case_nodes): Optimize test whether index is in given
interval.
* predict.c (estimate_probability): Do not bail out early
when note is present.
(combine_predictions_for_insn): Fix note removal code.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@43441 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/predict.c')
| -rw-r--r-- | gcc/predict.c | 7 |
1 files changed, 2 insertions, 5 deletions
diff --git a/gcc/predict.c b/gcc/predict.c index 21c7149070f..38818cbc079 100644 --- a/gcc/predict.c +++ b/gcc/predict.c @@ -208,7 +208,6 @@ combine_predictions_for_insn (insn, bb) probability combination techniques. */ while (*pnote) { - rtx *next_pnote = &XEXP (*pnote, 1); if (REG_NOTE_KIND (*pnote) == REG_BR_PRED) { int predictor = INTVAL (XEXP (XEXP (*pnote, 0), 0)); @@ -219,7 +218,8 @@ combine_predictions_for_insn (insn, bb) best_probability = probability, best_predictor = predictor; *pnote = XEXP (*pnote, 1); } - pnote = next_pnote; + else + pnote = &XEXP (*pnote, 1); } dump_prediction (PRED_FIRST_MATCH, best_probability, bb); if (!prob_note) @@ -313,9 +313,6 @@ estimate_probability (loops_info) || ! any_condjump_p (last_insn)) continue; - if (find_reg_note (last_insn, REG_BR_PROB, 0)) - continue; - for (e = bb->succ; e; e = e->succ_next) { /* Predict edges to blocks that return immediately to be |
