Re: [PATCH v1] RISC-V: Fix one potential test failure for RVV vsetvl

[Kito Cheng <kito.cheng@gmail.com>]

OK for this patch, and I am thinking we should adjust rvv.exp to
just exclude -O0, -Os and -Oz for some testcases run to simplify many
testcases.


On Mon, Jun 12, 2023 at 8:20 PM Pan Li via Gcc-patches
<gcc-patches@gcc.gnu.org> wrote:
>
> From: Pan Li <pan2.li@intel.com>
>
> The test will fail on below command with multi-thread like below.  However,
> it comes from one missed "Oz" option when check vsetvl.
>
> make -j $(nproc) report RUNTESTFLAGS="rvv.exp riscv.exp"
>
> To some reason, this failure cannot be reproduced by RUNTESTFLAGS="rvv.exp"
> or make without -j option. We would like to fix it and root cause the
> reason later.
>
> Signed-off-by: Pan Li <pan2.li@intel.com>
>
> gcc/testsuite/ChangeLog:
>
>         * gcc.target/riscv/rvv/vsetvl/vsetvl-23.c: Adjust test checking.
> ---
>  gcc/testsuite/gcc.target/riscv/rvv/vsetvl/vsetvl-23.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/gcc/testsuite/gcc.target/riscv/rvv/vsetvl/vsetvl-23.c b/gcc/testsuite/gcc.target/riscv/rvv/vsetvl/vsetvl-23.c
> index 66c90ac10e7..f3420be8ab6 100644
> --- a/gcc/testsuite/gcc.target/riscv/rvv/vsetvl/vsetvl-23.c
> +++ b/gcc/testsuite/gcc.target/riscv/rvv/vsetvl/vsetvl-23.c
> @@ -34,4 +34,4 @@ void f(int8_t *base, int8_t *out, size_t vl, size_t m, size_t k) {
>  /* { dg-final { scan-assembler-times {slli\s+[a-x0-9]+,\s*[a-x0-9]+,\s*4} 1 { target { no-opts "-O0" no-opts "-g" no-opts "-funroll-loops" } } } } */
>  /* { dg-final { scan-assembler-times {srli\s+[a-x0-9]+,\s*[a-x0-9]+,\s*8} 1 { target { no-opts "-O0" no-opts "-g" no-opts "-funroll-loops" } } } } */
>  /* { dg-final { scan-assembler-times {vsetvli} 5 { target { no-opts "-O0" no-opts "-Os" no-opts "-Oz" no-opts "-g" no-opts "-funroll-loops" } } } } */
> -/* { dg-final { scan-assembler-times {vsetvli\s+zero,\s*[a-x0-9]+,\s*e8,\s*mf8,\s*tu,\s*m[au]} 5 { target { no-opts "-O0" no-opts "-Os" no-opts "-g" no-opts "-funroll-loops" } } } } */
> +/* { dg-final { scan-assembler-times {vsetvli\s+zero,\s*[a-x0-9]+,\s*e8,\s*mf8,\s*tu,\s*m[au]} 5 { target { no-opts "-O0" no-opts "-Os" no-opts "-Oz" no-opts "-g" no-opts "-funroll-loops" } } } } */
> --
> 2.34.1
>