On Mon, Jun 13, 2022 at 9:39 AM Takayuki 'January June' Suwa <jjsuwa_sys3...@yahoo.co.jp> wrote: > > Changes from v1: > (*shift_per_byte_omit_AND_1): changed to be split as early as possible > > > === > This patch introduces funnel shifter utilization, and rearranges existing > "per-byte shift" insn patterns. > > gcc/ChangeLog: > > * config/xtensa/predicates.md (logical_shift_operator, > xtensa_shift_per_byte_operator): New predicates. > * config/xtensa/xtensa-protos.h (xtensa_shlrd_which_direction): > New prototype. > * config/xtensa/xtensa.cc (xtensa_shlrd_which_direction): > New helper function for funnel shift patterns. > * config/xtensa/xtensa.md (ior_op): New code iterator. > (*ashlsi3_1): Replace with new split pattern. > (*shift_per_byte): Unify *ashlsi3_3x, *ashrsi3_3x and *lshrsi3_3x. > (*shift_per_byte_omit_AND_0, *shift_per_byte_omit_AND_1): > New insn-and-split patterns that redirect to *xtensa_shift_per_byte, > in order to omit unnecessary bitwise AND operation. > (*shlrd_reg_<code>, *shlrd_const_<code>, *shlrd_per_byte_<code>, > *shlrd_per_byte_<code>_omit_AND): > New insn patterns for funnel shifts. > > gcc/testsuite/ChangeLog: > > * gcc.target/xtensa/funnel_shifter.c: New. > --- > gcc/config/xtensa/predicates.md | 6 + > gcc/config/xtensa/xtensa-protos.h | 1 + > gcc/config/xtensa/xtensa.cc | 14 ++ > gcc/config/xtensa/xtensa.md | 213 ++++++++++++++---- > .../gcc.target/xtensa/funnel_shifter.c | 17 ++ > 5 files changed, 213 insertions(+), 38 deletions(-) > create mode 100644 gcc/testsuite/gcc.target/xtensa/funnel_shifter.c
Regtested for target=xtensa-linux-uclibc, no new regressions. Committed to master. -- Thanks. -- Max
