From c77b8713a77e9b30420fc8c594b9c35c95580daa Mon Sep 17 00:00:00 2001 From: Pat Haugen Date: Tue, 13 Sep 2016 15:58:52 +0000 Subject: [PATCH] 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 --- gcc/ChangeLog | 7 +++++++ gcc/config/rs6000/rs6000.md | 6 ++++-- 2 files changed, 11 insertions(+), 2 deletions(-) diff --git a/gcc/ChangeLog b/gcc/ChangeLog index a11a273ea8b..58ab8355a75 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,10 @@ +2016-09-13 Pat Haugen + + 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 * optabs.c (prepare_cmp_insn): Update documentation comment. diff --git a/gcc/config/rs6000/rs6000.md b/gcc/config/rs6000/rs6000.md index 7da4370242d..8d09c8cd2dd 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) - && 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); -- 2.30.2