From: Christoph Muellner <christoph.muellner@vrull.eu>
To: gcc-patches@gcc.gnu.org, Kito Cheng <kito.cheng@sifive.com>,
Jim Wilson <jim.wilson.gcc@gmail.com>,
Palmer Dabbelt <palmer@dabbelt.com>,
Andrew Waterman <andrew@sifive.com>,
Philipp Tomsich <philipp.tomsich@vrull.eu>,
Jeff Law <jeffreyalaw@gmail.com>,
Vineet Gupta <vineetg@rivosinc.com>
Cc: "Christoph Müllner" <christoph.muellner@vrull.eu>
Subject: [PATCH 0/7] riscv: Improve builtins expansion
Date: Mon, 14 Nov 2022 00:05:14 +0100 [thread overview]
Message-ID: <20221113230521.712693-1-christoph.muellner@vrull.eu> (raw)
From: Christoph Müllner <christoph.muellner@vrull.eu>
This patchset adds includes patches to improve the following builtin
expansions:
* cpymemsi: Allow by-pieces to generate overlapping memory accesses
* cmpstrsi: Add expansion for strcmp and strncmp for aligned strings when zbb/orc.b is available
* strlen<mode>: Add expansion for strlen when zbb/orc.b is available
This changes were inspired a lot by the PowerPC backend
(e.g. moving the expansion code into riscv-string.cc and emitting an
unrolled loop which eventually calls the C runtime if necessary).
This series is meant to be applied on top of the VT1 support series:
https://gcc.gnu.org/pipermail/gcc-patches/2022-November/605959.html
The patches come with their own tests and show no regressions to
existing tests. Further the series has been tested with all SPEC CPU2017
benchmarks.
Christoph Müllner (6):
riscv: bitmanip/zbb: Add prefix/postfix and enable visiblity
riscv: Enable overlap-by-pieces via tune param
riscv: Move riscv_block_move_loop to separate file
riscv: Use by-pieces to do overlapping accesses in block_move_straight
riscv: Add support for strlen inline expansion
riscv: Add support for str(n)cmp inline expansion
Philipp Tomsich (1):
riscv: bitmanip: add orc.b as an unspec
gcc/config.gcc | 3 +-
gcc/config/riscv/bitmanip.md | 12 +-
gcc/config/riscv/riscv-protos.h | 7 +-
gcc/config/riscv/riscv-string.cc | 687 ++++++++++++++++++
gcc/config/riscv/riscv.cc | 172 +----
gcc/config/riscv/riscv.md | 105 ++-
gcc/config/riscv/riscv.opt | 5 +
gcc/config/riscv/t-riscv | 4 +
.../gcc.target/riscv/memcpy-nonoverlapping.c | 54 ++
.../gcc.target/riscv/memcpy-overlapping.c | 47 ++
.../gcc.target/riscv/memset-nonoverlapping.c | 45 ++
.../gcc.target/riscv/memset-overlapping.c | 43 ++
.../gcc.target/riscv/zbb-strcmp-unaligned.c | 36 +
gcc/testsuite/gcc.target/riscv/zbb-strcmp.c | 55 ++
.../gcc.target/riscv/zbb-strlen-unaligned.c | 13 +
gcc/testsuite/gcc.target/riscv/zbb-strlen.c | 18 +
16 files changed, 1132 insertions(+), 174 deletions(-)
create mode 100644 gcc/config/riscv/riscv-string.cc
create mode 100644 gcc/testsuite/gcc.target/riscv/memcpy-nonoverlapping.c
create mode 100644 gcc/testsuite/gcc.target/riscv/memcpy-overlapping.c
create mode 100644 gcc/testsuite/gcc.target/riscv/memset-nonoverlapping.c
create mode 100644 gcc/testsuite/gcc.target/riscv/memset-overlapping.c
create mode 100644 gcc/testsuite/gcc.target/riscv/zbb-strcmp-unaligned.c
create mode 100644 gcc/testsuite/gcc.target/riscv/zbb-strcmp.c
create mode 100644 gcc/testsuite/gcc.target/riscv/zbb-strlen-unaligned.c
create mode 100644 gcc/testsuite/gcc.target/riscv/zbb-strlen.c
--
2.38.1
next reply other threads:[~2022-11-13 23:05 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-11-13 23:05 Christoph Muellner [this message]
2022-11-13 23:05 ` [PATCH 1/7] riscv: bitmanip: add orc.b as an unspec Christoph Muellner
2022-11-14 16:51 ` Jeff Law
2022-11-14 17:53 ` Jeff Law
2022-11-14 19:05 ` Philipp Tomsich
2022-11-13 23:05 ` [PATCH 2/7] riscv: bitmanip/zbb: Add prefix/postfix and enable visiblity Christoph Muellner
2022-11-14 16:55 ` Jeff Law
2022-11-13 23:05 ` [PATCH 3/7] riscv: Enable overlap-by-pieces via tune param Christoph Muellner
2022-11-14 2:48 ` Vineet Gupta
2022-11-14 7:59 ` Philipp Tomsich
2022-11-14 8:29 ` Christoph Müllner
2022-11-14 19:04 ` Jeff Law
2022-11-14 19:07 ` Christoph Müllner
2022-11-13 23:05 ` [PATCH 4/7] riscv: Move riscv_block_move_loop to separate file Christoph Muellner
2022-11-14 16:56 ` Jeff Law
2022-11-13 23:05 ` [PATCH 5/7] riscv: Use by-pieces to do overlapping accesses in block_move_straight Christoph Muellner
2022-11-14 17:16 ` Jeff Law
2022-11-14 19:01 ` Christoph Müllner
2022-11-14 19:05 ` Jeff Law
2022-11-13 23:05 ` [PATCH 6/7] riscv: Add support for strlen inline expansion Christoph Muellner
2022-11-14 18:17 ` Jeff Law
2022-11-14 21:07 ` Christoph Müllner
2022-11-13 23:05 ` [PATCH 7/7] riscv: Add support for str(n)cmp " Christoph Muellner
2022-11-14 19:28 ` Jeff Law
2022-11-14 21:49 ` Christoph Müllner
2022-11-15 0:22 ` Jeff Law
2022-11-15 0:46 ` Kito Cheng
2022-11-15 0:53 ` Palmer Dabbelt
2022-11-15 1:55 ` Kito Cheng
2022-11-15 3:41 ` Jeff Law
2022-11-15 22:22 ` Christoph Müllner
2022-11-16 0:15 ` Philipp Tomsich
2022-11-21 3:24 ` Kito Cheng
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