[gcc(refs/vendors/riscv/heads/gcc-13-with-riscv-opts)] RISC-V: Enable RVV scalable vectorization by default[PR111311]

[gcc(refs/vendors/riscv/heads/gcc-13-with-riscv-opts)] RISC-V: Enable RVV scalable vectorization by default[PR111311]

[Jeff Law]

https://gcc.gnu.org/g:a2362e813b1bc1a646bd3acba0ad75de4f45d028

commit a2362e813b1bc1a646bd3acba0ad75de4f45d028
Author: Juzhe-Zhong <juzhe.zhong@rivai.ai>
Date:   Thu Sep 7 15:28:31 2023 +0800

    RISC-V: Enable RVV scalable vectorization by default[PR111311]
    
    This patch is not ready but they all will be fixed very soon.
    
    gcc/ChangeLog:
    
            PR target/111311
            * config/riscv/riscv.opt: Set default as scalable vectorization.
    
    (cherry picked from commit 88a0a883960910530bfefa750461168f539f4a00)

Diff:
---
 gcc/config/riscv/riscv.opt | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/gcc/config/riscv/riscv.opt b/gcc/config/riscv/riscv.opt
index 569e9af2e30..6f769c3020b 100644
--- a/gcc/config/riscv/riscv.opt
+++ b/gcc/config/riscv/riscv.opt
@@ -295,7 +295,7 @@ EnumValue
 Enum(riscv_autovec_preference) String(fixed-vlmax) Value(RVV_FIXED_VLMAX)
 
 -param=riscv-autovec-preference=
-Target RejectNegative Joined Enum(riscv_autovec_preference) Var(riscv_autovec_preference) Init(NO_AUTOVEC)
+Target RejectNegative Joined Enum(riscv_autovec_preference) Var(riscv_autovec_preference) Init(RVV_SCALABLE)
 -param=riscv-autovec-preference=<string>	Set the preference of auto-vectorization in the RISC-V port.
 
 Enum