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[v2,0/1] RISC-V: Optimze the reverse conditions of rotate shift

Message ID 20221206091153.27281-1-wangfeng@eswincomputing.com
Headers
Series RISC-V: Optimze the reverse conditions of rotate shift |

Message

Feng Wang Dec. 6, 2022, 9:11 a.m. UTC 
  The first patch is https://gcc.gnu.org/pipermail/gcc-patches/2022-November/607332.html.
Accroding to Jeff's suggestion I added some conditions when reverse the rotate
shift during RTL expansion and RTL optimization.

wangfeng (1):
  RISC-V: Optimze the reverse conditions of rotate shift

 gcc/config/riscv/bitmanip.md                  |  4 +-
 gcc/expmed.cc                                 | 14 ++--
 gcc/rtl.h                                     |  1 +
 gcc/simplify-rtx.cc                           | 49 ++++++++++----
 .../gcc.target/riscv/zbb-rol-ror-04.c         | 52 +++++++++++++++
 .../gcc.target/riscv/zbb-rol-ror-05.c         | 24 +++++++
 .../gcc.target/riscv/zbb-rol-ror-06.c         | 36 +++++++++++
 .../gcc.target/riscv/zbb-rol-ror-07.c         | 64 +++++++++++++++++++
 8 files changed, 219 insertions(+), 25 deletions(-)
 create mode 100644 gcc/testsuite/gcc.target/riscv/zbb-rol-ror-04.c
 create mode 100644 gcc/testsuite/gcc.target/riscv/zbb-rol-ror-05.c
 create mode 100644 gcc/testsuite/gcc.target/riscv/zbb-rol-ror-06.c
 create mode 100644 gcc/testsuite/gcc.target/riscv/zbb-rol-ror-07.c