From: LiaoShihua <shi...@iscas.ac.cn>
Zmmul extension is Multiply only extension for RISC-V.It implements the
multiplication subset of the M extension.
The encodings are identical to those of the corresponding M-extension
instructions.
When You both use M extension add Zmmul extension, it will warning "-mdiv
cannot use when the ZMMUL extension is present"
LiaoShihua (1):
RISC-V: Support Zmmul extension
gcc/common/config/riscv/riscv-common.cc | 3 +++
gcc/config/riscv/riscv-c.cc | 4 ++--
gcc/config/riscv/riscv-opts.h | 3 +++
gcc/config/riscv/riscv.cc | 4 +++-
gcc/config/riscv/riscv.md | 28 ++++++++++++------------
gcc/config/riscv/riscv.opt | 3 +++
gcc/testsuite/gcc.target/riscv/zmmul-1.c | 20 +++++++++++++++++
gcc/testsuite/gcc.target/riscv/zmmul-2.c | 20 +++++++++++++++++
8 files changed, 68 insertions(+), 17 deletions(-)
create mode 100644 gcc/testsuite/gcc.target/riscv/zmmul-1.c
create mode 100644 gcc/testsuite/gcc.target/riscv/zmmul-2.c
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2.31.1.windows.1
