From 58bd290e5b19164a956e08ffadc3684640c61e39 Mon Sep 17 00:00:00 2001 From: Kyrylo Tkachov Date: Tue, 18 Nov 2014 16:26:02 +0000 Subject: [PATCH] [ARM/AArch64] Improve modeled latency between FP operations and FP->GP register moves * config/arm/cortex-a15-neon.md (cortex_a15_vfp_to_from_gp): Split into... (cortex_a15_gp_to_vfp): ...This. (cortex_a15_fp_to_gp): ...And this. Define and comment bypass from vfp operations to fp->gp moves. From-SVN: r217725 --- gcc/ChangeLog | 8 ++++++++ gcc/config/arm/cortex-a15-neon.md | 16 +++++++++++++--- 2 files changed, 21 insertions(+), 3 deletions(-) diff --git a/gcc/ChangeLog b/gcc/ChangeLog index a15197eefc6..4a825c17310 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,11 @@ +2014-11-18 Kyrylo Tkachov + + * config/arm/cortex-a15-neon.md (cortex_a15_vfp_to_from_gp): + Split into... + (cortex_a15_gp_to_vfp): ...This. + (cortex_a15_fp_to_gp): ...And this. + Define and comment bypass from vfp operations to fp->gp moves. + 2014-11-18 Martin Liska * var-tracking.c (vt_find_locations): New fibonacci_node is used. diff --git a/gcc/config/arm/cortex-a15-neon.md b/gcc/config/arm/cortex-a15-neon.md index 02d4a530b2b..bc09cd6a4d7 100644 --- a/gcc/config/arm/cortex-a15-neon.md +++ b/gcc/config/arm/cortex-a15-neon.md @@ -655,10 +655,20 @@ (eq_attr "type" "fmov")) "ca15_issue1,ca15_cx_perm") -(define_insn_reservation "cortex_a15_vfp_to_from_gp" 5 +(define_insn_reservation "cortex_a15_gp_to_vfp" 5 (and (eq_attr "tune" "cortexa15") - (eq_attr "type" "f_mcr, f_mcrr, f_mrc, f_mrrc")) - "ca15_issue1,ca15_ls1+ca15_ls2") + (eq_attr "type" "f_mcr, f_mcrr")) + "ca15_issue1,ca15_ls") + +(define_insn_reservation "cortex_a15_mov_vfp_to_gp" 5 + (and (eq_attr "tune" "cortexa15") + (eq_attr "type" "f_mrc, f_mrrc")) + "ca15_issue1,ca15_ls") + +;; Moves from floating point registers to general purpose registers +;; induce additional latency. +(define_bypass 10 "cortex_a15_vfp*, cortex_a15_neon*, cortex_a15_gp_to_vfp" "cortex_a15_mov_vfp_to_gp") + (define_insn_reservation "cortex_a15_vfp_ariths" 7 (and (eq_attr "tune" "cortexa15") -- 2.30.2