On 24/08/12 08:45, Christophe Lyon wrote: > Hi, > > The patch below enables GCC for ARM to implement relevant constant > vector permutations using the Neon vext instruction, by extending the > support currently in place for vrev, vzip, vunzip and vtrn. > > For the cases where vext and vrev would lead to the same result, I > have chosen to keep using vrev to avoid updating the testsuite when > both are equivalent (1 cycle) or when vrev is faster (1 cycle when > operating on Qn vs 2 cycles for vext). > > Tested with qemu-arm on arm-none-linux-gnueabi. > > Christophe. > > 2012-08-23 Christophe Lyon <christophe.l...@linaro.org> > > gcc/ > * config/arm/arm.c (arm_evpc_neon_vext): New > function. > (arm_expand_vec_perm_const_1): Add call to > arm_evpc_neon_vext. > > gcc/testsuite/ > * gcc.target/arm/neon-vext.c: New tests.= >
Has this been tested for big-endian? R.
