[Bug target/112537] Is there a way to disable cpymem pass for rvv

[juzhe.zhong at rivai dot ai via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112537

--- Comment #10 from JuzheZhong <juzhe.zhong at rivai dot ai> ---
This following patch:

diff --git a/gcc/config/riscv/riscv-string.cc
b/gcc/config/riscv/riscv-string.cc
index 57e8ad698d7..c135d4efdb2 100644
--- a/gcc/config/riscv/riscv-string.cc
+++ b/gcc/config/riscv/riscv-string.cc
@@ -773,7 +773,7 @@ expand_block_move (rtx dst_in, rtx src_in, rtx length_in)
        bnez a2, loop                   # Any more?
        ret                             # Return
   */
-  if (!TARGET_VECTOR)
+  if (!TARGET_VECTOR || riscv_autovec_preference == NO_AUTOVEC ||
!flag_tree_vectorize)
     return false;
   HOST_WIDE_INT potential_ew
     = (MIN (MIN (MEM_ALIGN (src_in), MEM_ALIGN (dst_in)), BITS_PER_WORD)


Can fix this issue. Is it OK ?