[Bug target/113607] [14] RISC-V rv64gcv vector: Runtime mismatch at -O3

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113607

--- Comment #15 from JuzheZhong <juzhe.zhong at rivai dot ai> ---
Hi, Robin.

I tried to disable vec_extract, then the case passed.

diff --git a/gcc/config/riscv/autovec.md b/gcc/config/riscv/autovec.md
index 3b32369f68c..b61b886ef3d 100644
--- a/gcc/config/riscv/autovec.md
+++ b/gcc/config/riscv/autovec.md
@@ -1386,7 +1386,7 @@
        (match_operand:V_VLS      1 "register_operand")
        (parallel
         [(match_operand          2 "nonmemory_operand")])))]
-  "TARGET_VECTOR"
+  "0"
 {
   /* Element extraction can be done by sliding down the requested element
      to index 0 and then v(f)mv.[xf].s it to a scalar register.  */


I am not so familiar with it (vec extract stuff), could you take a look at it ?