Re: [PATCH v2 3/7] aarch64: Add eh_return compile tests

[Andrew Pinski <pinskia@gmail.com>]

On Fri, Nov 3, 2023 at 8:37 AM Szabolcs Nagy <szabolcs.nagy@arm.com> wrote:
>
> gcc/testsuite/ChangeLog:
>
>         * gcc.target/aarch64/eh_return-2.c: New test.
>         * gcc.target/aarch64/eh_return-3.c: New test.


gcc.target/aarch64/eh_return-3.c fails when running the testsuite with
`-march=armv9-a+sve` . I think it is a good idea to try to keep the
testsuite clean when running with different -march=/-mcpu= options
even. I know there are many failures due to -march=/-mcpu option right
now but this is a new testcase and all.

Thanks,
Andrew

>
> ---
> v2: check-function-bodies in eh_return-3.c
> (this is not very robust, but easier to read)
> ---
>  .../gcc.target/aarch64/eh_return-2.c          |  9 ++++++
>  .../gcc.target/aarch64/eh_return-3.c          | 30 +++++++++++++++++++
>  2 files changed, 39 insertions(+)
>  create mode 100644 gcc/testsuite/gcc.target/aarch64/eh_return-2.c
>  create mode 100644 gcc/testsuite/gcc.target/aarch64/eh_return-3.c
>
> diff --git a/gcc/testsuite/gcc.target/aarch64/eh_return-2.c b/gcc/testsuite/gcc.target/aarch64/eh_return-2.c
> new file mode 100644
> index 00000000000..4a9d124e891
> --- /dev/null
> +++ b/gcc/testsuite/gcc.target/aarch64/eh_return-2.c
> @@ -0,0 +1,9 @@
> +/* { dg-do compile } */
> +/* { dg-final { scan-assembler "add\tsp, sp, x5" } } */
> +/* { dg-final { scan-assembler "br\tx6" } } */
> +
> +void
> +foo (unsigned long off, void *handler)
> +{
> +  __builtin_eh_return (off, handler);
> +}
> diff --git a/gcc/testsuite/gcc.target/aarch64/eh_return-3.c b/gcc/testsuite/gcc.target/aarch64/eh_return-3.c
> new file mode 100644
> index 00000000000..bfbe92af427
> --- /dev/null
> +++ b/gcc/testsuite/gcc.target/aarch64/eh_return-3.c
> @@ -0,0 +1,30 @@
> +/* { dg-do compile } */
> +/* { dg-options "-O2 -mbranch-protection=pac-ret+leaf" } */
> +/* { dg-final { check-function-bodies "**" "" "" } } */
> +
> +/*
> +**foo:
> +**     hint    25 // paciasp
> +**     stp     x0, x1, .*
> +**     stp     x2, x3, .*
> +**     cbz     w2, .*
> +**     mov     x4, 0
> +**     ldp     x2, x3, .*
> +**     ldp     x0, x1, .*
> +**     cbz     x4, .*
> +**     add     sp, sp, x5
> +**     br      x6
> +**     hint    29 // autiasp
> +**     ret
> +**     mov     x5, x0
> +**     mov     x6, x1
> +**     mov     x4, 1
> +**     b       .*
> +*/
> +void
> +foo (unsigned long off, void *handler, int c)
> +{
> +  if (c)
> +    return;
> +  __builtin_eh_return (off, handler);
> +}
> --
> 2.25.1
>