https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111621
JuzheZhong <juzhe.zhong at rivai dot ai> changed:
What |Removed |Added
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CC| |juzhe.zhong at rivai dot ai
--- Comment #3 from JuzheZhong <juzhe.zhong at rivai dot ai> ---
I don't think this is a bug.
You are using __riscv_vadd_vx_i32m4_m.
The vd is not necessary same as vs2 and this intrinsic is supposed to use
TAMA which means that the tailed element and mask-inactive elements are
agnostic (can be either all ones or original value).
So the codegen is correct even though -O0 result is different from -O2/-O3.
If you want to use make vd same as vs2, you should use these following
intrinsics:
__riscv_vadd_vx_i32m4_tu
__riscv_vadd_vx_i32m4_mu
__riscv_vadd_vx_i32m4_tumu
