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| author | Pat Haugen <pthaugen@us.ibm.com> | 2016-09-13 15:58:52 +0000 |
|---|---|---|
| committer | Pat Haugen <pthaugen@gcc.gnu.org> | 2016-09-13 15:58:52 +0000 |
| commit | c77b8713a77e9b30420fc8c594b9c35c95580daa (patch) | |
| tree | c855b6cb054201fe7e84b3438c0d2ccd8521c473 /gcc | |
| parent | 42763690bd1f536692054d4b8d530d1a5a9c29a1 (diff) | |
| download | gcc-c77b8713a77e9b30420fc8c594b9c35c95580daa.zip gcc-c77b8713a77e9b30420fc8c594b9c35c95580daa.tar.gz gcc-c77b8713a77e9b30420fc8c594b9c35c95580daa.tar.bz2 | |
re PR tree-optimization/77536 (Vectorizer not maintaining relationship of relative block frequencies in absence of real profile data)
PR tree-optimization/77536
PR rtl-optimization/68212
* config/rs6000/rs6000.md (div->recip splitter): Remove
optimize_insn_for_speed_p condition.
From-SVN: r240113
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 7 | ||||
| -rw-r--r-- | gcc/config/rs6000/rs6000.md | 6 |
2 files changed, 11 insertions, 2 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index a11a273..58ab835 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,10 @@ +2016-09-13 Pat Haugen <pthaugen@us.ibm.com> + + PR tree-optimization/77536 + PR rtl-optimization/68212 + * config/rs6000/rs6000.md (div->recip splitter): Remove + optimize_insn_for_speed_p condition. + 2016-09-13 Maciej W. Rozycki <macro@imgtec.com> * optabs.c (prepare_cmp_insn): Update documentation comment. diff --git a/gcc/config/rs6000/rs6000.md b/gcc/config/rs6000/rs6000.md index 7da4370..8d09c8c 100644 --- a/gcc/config/rs6000/rs6000.md +++ b/gcc/config/rs6000/rs6000.md @@ -4323,13 +4323,15 @@ ;; Split to create division from FRE/FRES/etc. and fixup instead of the normal ;; hardware division. This is only done before register allocation and with ;; -ffast-math. This must appear before the divsf3/divdf3 insns. +;; We used to also check optimize_insn_for_speed_p () but problems with guessed +;; frequencies (pr68212/pr77536) yields that unreliable so it was removed. (define_split [(set (match_operand:RECIPF 0 "gpc_reg_operand" "") (div:RECIPF (match_operand 1 "gpc_reg_operand" "") (match_operand 2 "gpc_reg_operand" "")))] "RS6000_RECIP_AUTO_RE_P (<MODE>mode) - && can_create_pseudo_p () && optimize_insn_for_speed_p () - && flag_finite_math_only && !flag_trapping_math && flag_reciprocal_math" + && can_create_pseudo_p () && flag_finite_math_only + && !flag_trapping_math && flag_reciprocal_math" [(const_int 0)] { rs6000_emit_swdiv (operands[0], operands[1], operands[2], true); |