On 18/08/11 14:03, Richard Sandiford wrote: > Following on from: > > http://gcc.gnu.org/ml/gcc/2011-08/msg00306.html > > this patch stops the ARM and Thumb-2 rtx costs from giving SETs a base > cost of COSTS_N_INSNS (4). In current trunk, the main effect is to stop > ivopts from being excessively conservative in the number of ivopts that > it creates. > > I measured the effect on an embedded benchmark, which showed some nice > improvements. (Results sent to Ramana privately.) > > Tested on arm-linux-gnueabi. OK to install? > > Richard > > > gcc/ > * config/arm/arm.c (arm_rtx_costs_1): Don't modify the costs of SET. > (arm_size_rtx_costs): Likewise.
Erm... Cough! Ok. R.
