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| author | Martin Liska <mliska@suse.cz> | 2018-01-19 13:06:18 +0100 |
|---|---|---|
| committer | Martin Liska <marxin@gcc.gnu.org> | 2018-01-19 12:06:18 +0000 |
| commit | 664d17c65c7505608c576515f32fa5099727358b (patch) | |
| tree | a2d3167baa2038e3ff43769e1e360f89d33a607a /gcc/predict.def | |
| parent | e2a1e6a441f9ced9412609cd4d8ae8ede52628a3 (diff) | |
| download | gcc-664d17c65c7505608c576515f32fa5099727358b.zip gcc-664d17c65c7505608c576515f32fa5099727358b.tar.gz gcc-664d17c65c7505608c576515f32fa5099727358b.tar.bz2 | |
Adjust predictor values according to SPEC2006 and SPEC2017.
2018-01-19 Martin Liska <mliska@suse.cz>
* predict.def (PRED_LOOP_EXIT): Change from 85 to 89.
(PRED_LOOP_EXIT_WITH_RECURSION): Change from 72 to 78.
(PRED_LOOP_EXTRA_EXIT): Change from 83 to 67.
(PRED_OPCODE_POSITIVE): Change from 64 to 59.
(PRED_TREE_OPCODE_POSITIVE): Change from 64 to 59.
(PRED_CONST_RETURN): Change from 69 to 65.
(PRED_NULL_RETURN): Change from 91 to 71.
(PRED_LOOP_IV_COMPARE_GUESS): Change from 98 to 64.
(PRED_LOOP_GUARD): Change from 66 to 73.
From-SVN: r256888
Diffstat (limited to 'gcc/predict.def')
| -rw-r--r-- | gcc/predict.def | 18 |
1 files changed, 9 insertions, 9 deletions
diff --git a/gcc/predict.def b/gcc/predict.def index 390b9a3..fe72080 100644 --- a/gcc/predict.def +++ b/gcc/predict.def @@ -89,16 +89,16 @@ DEF_PREDICTOR (PRED_COLD_FUNCTION, "cold function call", PROB_VERY_LIKELY, PRED_FLAG_FIRST_MATCH) /* Edge causing loop to terminate is probably not taken. */ -DEF_PREDICTOR (PRED_LOOP_EXIT, "loop exit", HITRATE (85), +DEF_PREDICTOR (PRED_LOOP_EXIT, "loop exit", HITRATE (89), PRED_FLAG_FIRST_MATCH) /* Same as LOOP_EXIT but for loops containing recursive call. */ DEF_PREDICTOR (PRED_LOOP_EXIT_WITH_RECURSION, "loop exit with recursion", - HITRATE (72), PRED_FLAG_FIRST_MATCH) + HITRATE (78), PRED_FLAG_FIRST_MATCH) /* Edge causing loop to terminate by computing value used by later conditional. */ -DEF_PREDICTOR (PRED_LOOP_EXTRA_EXIT, "extra loop exit", HITRATE (83), +DEF_PREDICTOR (PRED_LOOP_EXTRA_EXIT, "extra loop exit", HITRATE (67), PRED_FLAG_FIRST_MATCH) /* Pointers are usually not NULL. */ @@ -106,11 +106,11 @@ DEF_PREDICTOR (PRED_POINTER, "pointer", HITRATE (70), 0) DEF_PREDICTOR (PRED_TREE_POINTER, "pointer (on trees)", HITRATE (70), 0) /* NE is probable, EQ not etc... */ -DEF_PREDICTOR (PRED_OPCODE_POSITIVE, "opcode values positive", HITRATE (64), 0) +DEF_PREDICTOR (PRED_OPCODE_POSITIVE, "opcode values positive", HITRATE (59), 0) DEF_PREDICTOR (PRED_OPCODE_NONEQUAL, "opcode values nonequal", HITRATE (66), 0) DEF_PREDICTOR (PRED_FPOPCODE, "fp_opcode", HITRATE (90), 0) DEF_PREDICTOR (PRED_TREE_OPCODE_POSITIVE, "opcode values positive (on trees)", - HITRATE (64), 0) + HITRATE (59), 0) DEF_PREDICTOR (PRED_TREE_OPCODE_NONEQUAL, "opcode values nonequal (on trees)", HITRATE (66), 0) DEF_PREDICTOR (PRED_TREE_FPOPCODE, "fp_opcode (on trees)", HITRATE (90), 0) @@ -136,18 +136,18 @@ DEF_PREDICTOR (PRED_TREE_EARLY_RETURN, "early return (on trees)", HITRATE (66), DEF_PREDICTOR (PRED_GOTO, "goto", HITRATE (66), 0) /* Branch ending with return constant is probably not taken. */ -DEF_PREDICTOR (PRED_CONST_RETURN, "const return", HITRATE (69), 0) +DEF_PREDICTOR (PRED_CONST_RETURN, "const return", HITRATE (65), 0) /* Branch ending with return negative constant is probably not taken. */ DEF_PREDICTOR (PRED_NEGATIVE_RETURN, "negative return", HITRATE (98), 0) /* Branch ending with return; is probably not taken */ -DEF_PREDICTOR (PRED_NULL_RETURN, "null return", HITRATE (91), 0) +DEF_PREDICTOR (PRED_NULL_RETURN, "null return", HITRATE (71), 0) /* Branches to compare induction variable to a loop bound is extremely likely. */ DEF_PREDICTOR (PRED_LOOP_IV_COMPARE_GUESS, "guess loop iv compare", - HITRATE (98), 0) + HITRATE (64), 0) /* Use number of loop iterations determined by # of iterations analysis to set probability of branches that compares IV to loop bound variable. */ @@ -160,7 +160,7 @@ DEF_PREDICTOR (PRED_LOOP_IV_COMPARE, "loop iv compare", PROB_UNINITIALIZED, for (loop2) body; guess that cond is unlikely. */ -DEF_PREDICTOR (PRED_LOOP_GUARD, "loop guard", HITRATE (66), 0) +DEF_PREDICTOR (PRED_LOOP_GUARD, "loop guard", HITRATE (73), 0) /* Same but for loops containing recursion. */ DEF_PREDICTOR (PRED_LOOP_GUARD_WITH_RECURSION, "loop guard with recursion", |