* [PATCH v2] RISC-V: Document optimization parameter riscv-strcmp-inline-limit
@ 2023-12-04 9:55 Christoph Müllner
2023-12-04 13:17 ` Kito Cheng
0 siblings, 1 reply; 2+ messages in thread
From: Christoph Müllner @ 2023-12-04 9:55 UTC (permalink / raw)
To: gcc-patches, Kito Cheng, Jim Wilson, Palmer Dabbelt,
Andrew Waterman, Philipp Tomsich, Jeff Law, Jeremy Bennett
Cc: Christoph Müllner
This patch documents the optimization parameter
riscv-strcmp-inline-limit, which can be used to tweak the behaviour
of -minline-strcmp and -minline-strncmp.
gcc/ChangeLog:
PR target/112650
* doc/invoke.texi: Document riscv-strcmp-inline-limit.
Signed-off-by: Christoph Müllner <christoph.muellner@vrull.eu>
---
gcc/doc/invoke.texi | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi
index 6fe63b5f999..2b51ff304f6 100644
--- a/gcc/doc/invoke.texi
+++ b/gcc/doc/invoke.texi
@@ -29846,6 +29846,10 @@ Inlining will only be done if the strings are properly aligned
and instructions for accelerated processing are available.
The default is to not inline strcmp calls.
+The @option{--param riscv-strcmp-inline-limit=@var{n}} parameter controls
+the maximum number of bytes compared by the inlined code.
+The default value is 64.
+
@opindex minline-strncmp
@item -minline-strncmp
@itemx -mno-inline-strncmp
@@ -29854,6 +29858,10 @@ Inlining will only be done if the strings are properly aligned
and instructions for accelerated processing are available.
The default is to not inline strncmp calls.
+The @option{--param riscv-strcmp-inline-limit=@var{n}} parameter controls
+the maximum number of bytes compared by the inlined code.
+The default value is 64.
+
@opindex mshorten-memrefs
@item -mshorten-memrefs
@itemx -mno-shorten-memrefs
--
2.43.0
^ permalink raw reply [flat|nested] 2+ messages in thread* Re: [PATCH v2] RISC-V: Document optimization parameter riscv-strcmp-inline-limit
2023-12-04 9:55 [PATCH v2] RISC-V: Document optimization parameter riscv-strcmp-inline-limit Christoph Müllner
@ 2023-12-04 13:17 ` Kito Cheng
0 siblings, 0 replies; 2+ messages in thread
From: Kito Cheng @ 2023-12-04 13:17 UTC (permalink / raw)
To: Christoph Müllner
Cc: gcc-patches, Kito Cheng, Jim Wilson, Palmer Dabbelt,
Andrew Waterman, Philipp Tomsich, Jeff Law, Jeremy Bennett
LGTM
On Mon, Dec 4, 2023 at 5:55 PM Christoph Müllner
<christoph.muellner@vrull.eu> wrote:
>
> This patch documents the optimization parameter
> riscv-strcmp-inline-limit, which can be used to tweak the behaviour
> of -minline-strcmp and -minline-strncmp.
>
> gcc/ChangeLog:
>
> PR target/112650
> * doc/invoke.texi: Document riscv-strcmp-inline-limit.
>
> Signed-off-by: Christoph Müllner <christoph.muellner@vrull.eu>
> ---
> gcc/doc/invoke.texi | 8 ++++++++
> 1 file changed, 8 insertions(+)
>
> diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi
> index 6fe63b5f999..2b51ff304f6 100644
> --- a/gcc/doc/invoke.texi
> +++ b/gcc/doc/invoke.texi
> @@ -29846,6 +29846,10 @@ Inlining will only be done if the strings are properly aligned
> and instructions for accelerated processing are available.
> The default is to not inline strcmp calls.
>
> +The @option{--param riscv-strcmp-inline-limit=@var{n}} parameter controls
> +the maximum number of bytes compared by the inlined code.
> +The default value is 64.
> +
> @opindex minline-strncmp
> @item -minline-strncmp
> @itemx -mno-inline-strncmp
> @@ -29854,6 +29858,10 @@ Inlining will only be done if the strings are properly aligned
> and instructions for accelerated processing are available.
> The default is to not inline strncmp calls.
>
> +The @option{--param riscv-strcmp-inline-limit=@var{n}} parameter controls
> +the maximum number of bytes compared by the inlined code.
> +The default value is 64.
> +
> @opindex mshorten-memrefs
> @item -mshorten-memrefs
> @itemx -mno-shorten-memrefs
> --
> 2.43.0
>
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