From 6a9ee02f7afa32a1bded5d4d0644ac1b02064148 Mon Sep 17 00:00:00 2001 From: Kyrylo Tkachov Date: Tue, 10 Nov 2015 17:29:46 +0000 Subject: [PATCH] [ARM] Fix costing of vmul+vcvt combine pattern * config/arm/arm.c (arm_new_rtx_costs, FIX case): Handle combine_vcvtf2i pattern. From-SVN: r230116 --- gcc/ChangeLog | 5 +++++ gcc/config/arm/arm.c | 17 +++++++++++++++++ 2 files changed, 22 insertions(+) diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 07f574f..5eca05d 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,5 +1,10 @@ 2015-11-10 Kyrylo Tkachov + * config/arm/arm.c (arm_new_rtx_costs, FIX case): Handle + combine_vcvtf2i pattern. + +2015-11-10 Kyrylo Tkachov + * config/arm/arm.c (neon_valid_immediate): Remove integer CONST_DOUBLE handling. It should never occur. diff --git a/gcc/config/arm/arm.c b/gcc/config/arm/arm.c index f5c8825..736e6c8 100644 --- a/gcc/config/arm/arm.c +++ b/gcc/config/arm/arm.c @@ -11049,6 +11049,23 @@ arm_new_rtx_costs (rtx x, enum rtx_code code, enum rtx_code outer_code, case UNSIGNED_FIX: if (TARGET_HARD_FLOAT) { + /* The *combine_vcvtf2i reduces a vmul+vcvt into + a vcvt fixed-point conversion. */ + if (code == FIX && mode == SImode + && GET_CODE (XEXP (x, 0)) == FIX + && GET_MODE (XEXP (x, 0)) == SFmode + && GET_CODE (XEXP (XEXP (x, 0), 0)) == MULT + && vfp3_const_double_for_bits (XEXP (XEXP (XEXP (x, 0), 0), 1)) + > 0) + { + if (speed_p) + *cost += extra_cost->fp[0].toint; + + *cost += rtx_cost (XEXP (XEXP (XEXP (x, 0), 0), 0), mode, + code, 0, speed_p); + return true; + } + if (GET_MODE_CLASS (mode) == MODE_INT) { mode = GET_MODE (XEXP (x, 0)); -- 2.7.4