On Wed, Mar 19, 2014 at 9:55 AM, Kyrill Tkachov <kyrylo.tkac...@arm.com> wrote: > Hi all, > > In order to properly cost the rev16 instruction we need a new field in the > cost tables. > This patch adds that and specifies its value for the existing cost tables. > Since rev16 is used to implement the BSWAP operation we add handling of that > in the rtx cost function using the new field. > > Tested on arm-none-eabi and bootstrapped on an arm linux target. > > Does it look ok for stage1?
Ok for stage1 if no regressions. > > Thanks, > Kyrill > > 2014-03-19 Kyrylo Tkachov <kyrylo.tkac...@arm.com> > > * config/arm/aarch-common-protos.h (alu_cost_table): Add rev field. > * config/arm/aarch-cost-tables.h (generic_extra_costs): Specify > rev cost. > (cortex_a53_extra_costs): Likewise. > (cortex_a57_extra_costs): Likewise. > * config/arm/arm.c (cortexa9_extra_costs): Likewise. > (cortexa7_extra_costs): Likewise. > (cortexa12_extra_costs): Likewise. > (cortexa15_extra_costs): Likewise. > (v7m_extra_costs): Likewise. > (arm_new_rtx_costs): Handle BSWAP.
