* [PATCH] RISC-V: Avoid redundant flow in backward fusion
@ 2023-01-09 22:50 juzhe.zhong
2023-01-26 19:16 ` Kito Cheng
0 siblings, 1 reply; 2+ messages in thread
From: juzhe.zhong @ 2023-01-09 22:50 UTC (permalink / raw)
To: gcc-patches; +Cc: kito.cheng, palmer, Ju-Zhe Zhong
From: Ju-Zhe Zhong <juzhe.zhong@rivai.ai>
gcc/ChangeLog:
* config/riscv/riscv-vsetvl.cc (pass_vsetvl::backward_demand_fusion): Add pre-check to avoid redundant flow.
---
gcc/config/riscv/riscv-vsetvl.cc | 2 ++
1 file changed, 2 insertions(+)
diff --git a/gcc/config/riscv/riscv-vsetvl.cc b/gcc/config/riscv/riscv-vsetvl.cc
index 0ca1c51d121..a972c49561a 100644
--- a/gcc/config/riscv/riscv-vsetvl.cc
+++ b/gcc/config/riscv/riscv-vsetvl.cc
@@ -2020,6 +2020,8 @@ pass_vsetvl::backward_demand_fusion (void)
if (!backward_propagate_worthwhile_p (cfg_bb, curr_block_info))
continue;
+
+ if (cfg_bb == EXIT_BLOCK_PTR_FOR_FN (cfun))
continue;
edge e;
--
2.36.1
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: [PATCH] RISC-V: Avoid redundant flow in backward fusion
2023-01-09 22:50 [PATCH] RISC-V: Avoid redundant flow in backward fusion juzhe.zhong
@ 2023-01-26 19:16 ` Kito Cheng
0 siblings, 0 replies; 2+ messages in thread
From: Kito Cheng @ 2023-01-26 19:16 UTC (permalink / raw)
To: juzhe.zhong; +Cc: gcc-patches, palmer
[-- Attachment #1: Type: text/plain, Size: 860 bytes --]
merged into another commit,, thanks.
On Tue, Jan 10, 2023 at 6:51 AM <juzhe.zhong@rivai.ai> wrote:
> From: Ju-Zhe Zhong <juzhe.zhong@rivai.ai>
>
> gcc/ChangeLog:
>
> * config/riscv/riscv-vsetvl.cc
> (pass_vsetvl::backward_demand_fusion): Add pre-check to avoid redundant
> flow.
>
> ---
> gcc/config/riscv/riscv-vsetvl.cc | 2 ++
> 1 file changed, 2 insertions(+)
>
> diff --git a/gcc/config/riscv/riscv-vsetvl.cc
> b/gcc/config/riscv/riscv-vsetvl.cc
> index 0ca1c51d121..a972c49561a 100644
> --- a/gcc/config/riscv/riscv-vsetvl.cc
> +++ b/gcc/config/riscv/riscv-vsetvl.cc
> @@ -2020,6 +2020,8 @@ pass_vsetvl::backward_demand_fusion (void)
>
> if (!backward_propagate_worthwhile_p (cfg_bb, curr_block_info))
> continue;
> +
> + if (cfg_bb == EXIT_BLOCK_PTR_FOR_FN (cfun))
> continue;
>
> edge e;
> --
> 2.36.1
>
>
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