On 12/02/2021 14:20, Christophe Lyon via Gcc-patches wrote:
> This test forces -march=armv8.1-m.main, which supports only Thumb mode.
> However, if the toolchain is not configured --with-thumb, the test
> fails with:
> error: target CPU does not support ARM mode
>
> Adding -mthumb to dg-options fixes the problem.
>
Hmm, this sounds like a different problem. The driver, these days, is
supposed to detect when the architecture only supports thumb and to add
that automatically when calling cc1 etc. So why isn't that working in
this case?
(See gcc/common/config/arm/arm-common.c:arm_target_thumb_only).
R.
> Committed as obvious.
>
> 2021-02-12 Christophe Lyon <christophe.l...@linaro.org>
>
> PR target/98931
> gcc/testsuite/
> * gcc.target/arm/pr98931.c: Add -mthumb
> ---
> gcc/testsuite/gcc.target/arm/pr98931.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/gcc/testsuite/gcc.target/arm/pr98931.c
> b/gcc/testsuite/gcc.target/arm/pr98931.c
> index 313876a..66070ad 100644
> --- a/gcc/testsuite/gcc.target/arm/pr98931.c
> +++ b/gcc/testsuite/gcc.target/arm/pr98931.c
> @@ -1,6 +1,6 @@
> /* { dg-do assemble } */
> /* { dg-skip-if "avoid conflicting multilib options" { *-*-* } { "-marm"
> "-mcpu=*" } } */
> -/* { dg-options "-march=armv8.1-m.main -O3
> --param=max-completely-peeled-insns=1300 --save-temps" } */
> +/* { dg-options "-march=armv8.1-m.main -O3
> --param=max-completely-peeled-insns=1300 --save-temps -mthumb" } */
>
> extern long long a[][20][26][26][22];
>
>
