diff options
Diffstat (limited to 'gcc/predict.def')
| -rw-r--r-- | gcc/predict.def | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/gcc/predict.def b/gcc/predict.def index 997f4d2cc98..22474b3db40 100644 --- a/gcc/predict.def +++ b/gcc/predict.def @@ -52,9 +52,9 @@ DEF_PREDICTOR (PRED_NO_PREDICTION, "no prediction", PROB_ALWAYS, 0) DEF_PREDICTOR (PRED_UNCONDITIONAL, "unconditional jump", PROB_ALWAYS, PRED_FLAG_FIRST_MATCH) -/* Use number of loop iterations determined by loop unroller to set - probability. We don't want to use Dempster-Shaffer theory here, - as the predictions is exact. */ +/* Use number of loop iterations determined by # of iterations + analysis to set probability. We don't want to use Dempster-Shaffer + theory here, as the predictions is exact. */ DEF_PREDICTOR (PRED_LOOP_ITERATIONS, "loop iterations", PROB_ALWAYS, PRED_FLAG_FIRST_MATCH) @@ -62,6 +62,10 @@ DEF_PREDICTOR (PRED_LOOP_ITERATIONS, "loop iterations", PROB_ALWAYS, DEF_PREDICTOR (PRED_BUILTIN_EXPECT, "__builtin_expect", PROB_VERY_LIKELY, PRED_FLAG_FIRST_MATCH) +/* Use number of loop iterations guessed by the contents of the loop. */ +DEF_PREDICTOR (PRED_LOOP_ITERATIONS_GUESSED, "guessed loop iterations", + PROB_ALWAYS, PRED_FLAG_FIRST_MATCH) + /* Branch containing goto is probably not taken. */ DEF_PREDICTOR (PRED_CONTINUE, "continue", HITRATE (56), 0) |