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| author | Jonathan Wright <jonathan.wright@arm.com> | 2021-03-04 12:36:09 +0000 |
|---|---|---|
| committer | Jonathan Wright <jonathan.wright@arm.com> | 2021-05-19 14:44:10 +0100 |
| commit | 4e26303e0b90038473e3d7490dc0369a74866b1b (patch) | |
| tree | e478d5f9b8d2f3e54b637500bb381e3d96b459a1 /libcpp/include/cpplib.h | |
| parent | 3eddaad02dcce21fb67c42cc6e1e8f951a630ac1 (diff) | |
| download | gcc-4e26303e0b90038473e3d7490dc0369a74866b1b.zip gcc-4e26303e0b90038473e3d7490dc0369a74866b1b.tar.gz gcc-4e26303e0b90038473e3d7490dc0369a74866b1b.tar.bz2 | |
aarch64: Relax aarch64_<sur>q<r>shr<u>n2_n<mode> RTL pattern
Implement saturating right-shift and narrow high Neon intrinsic RTL
patterns using a vec_concat of a register_operand and a VQSHRN_N
unspec - instead of just a VQSHRN_N unspec. This more relaxed pattern
allows for more aggressive combinations and ultimately better code
generation.
gcc/ChangeLog:
2021-03-04 Jonathan Wright <jonathan.wright@arm.com>
* config/aarch64/aarch64-simd.md (aarch64_<sur>q<r>shr<u>n2_n<mode>):
Implement as an expand emitting a big/little endian
instruction pattern.
(aarch64_<sur>q<r>shr<u>n2_n<mode>_insn_le): Define.
(aarch64_<sur>q<r>shr<u>n2_n<mode>_insn_be): Define.
Diffstat (limited to 'libcpp/include/cpplib.h')
0 files changed, 0 insertions, 0 deletions