在 2025/2/14 下午8:21, Xi Ruoyao 写道:
This series is intended to fix some test failures on
vect-reduc-chain-*.c by adding the [su]dot_prod* expand for LSX and LASX
vector modes. But the code base of the related instructions was not
readable, so clean it up first (using the approach learnt from AArch64)
before adding the expands.
v2 => v3:
- Move the introduction of V1TI and V2TI from patch 3 to patch 2, so
each commit is buildable.
v1 => v2:
- Only simplify vpick{ev,od}, not xvpick{ev,od} (where
vect_par_cnst_even_or_odd_half is not suitable).
- Keep {sign,zero}_extend out of vec_select.
- Remove vect_par_cnst_{even,odd}_half for simd_h<optab>w_<mode>_<su>,
to simplify the code and allow it to match the RTL in case the even
half is selected for the left operand of addsub. Swap the operands if
needed when outputting the asm.
- Fix typos in commit subjects.
- Mention V2TI in loongarch-modes.def.
v2 bootstrapped and regtested on loongarch64-linux-gnu, no new code
change in v3. Ok for trunk?
LGTM.
Thanks!
Xi Ruoyao (8):
LoongArch: Try harder using vrepli instructions to materialize const
vectors
LoongArch: Allow moving TImode vectors
LoongArch: Simplify {lsx_,lasx_x}v{add,sub,mul}l{ev,od} description
LoongArch: Simplify {lsx_,lasx_x}vh{add,sub}w description
LoongArch: Simplify {lsx_,lasx_x}vmaddw description
LoongArch: Simplify lsx_vpick description
LoongArch: Implement vec_widen_mult_{even,odd}_* for LSX and LASX
modes
LoongArch: Implement [su]dot_prod* for LSX and LASX modes
gcc/config/loongarch/constraints.md | 2 +-
gcc/config/loongarch/lasx.md | 1070 +----------------
gcc/config/loongarch/loongarch-builtins.cc | 60 +
gcc/config/loongarch/loongarch-modes.def | 5 +-
gcc/config/loongarch/loongarch-protos.h | 3 +
gcc/config/loongarch/loongarch.cc | 50 +-
gcc/config/loongarch/loongarch.md | 2 +-
gcc/config/loongarch/lsx.md | 1006 +---------------
gcc/config/loongarch/predicates.md | 27 +
gcc/config/loongarch/simd.md | 390 +++++-
gcc/testsuite/gcc.target/loongarch/vrepli.c | 15 +
.../gcc.target/loongarch/wide-mul-reduc-1.c | 18 +
.../gcc.target/loongarch/wide-mul-reduc-2.c | 18 +
13 files changed, 612 insertions(+), 2054 deletions(-)
create mode 100644 gcc/testsuite/gcc.target/loongarch/vrepli.c
create mode 100644 gcc/testsuite/gcc.target/loongarch/wide-mul-reduc-1.c
create mode 100644 gcc/testsuite/gcc.target/loongarch/wide-mul-reduc-2.c
