> -----Original Message-----
> From: Tamar Christina <tamar.christ...@arm.com>
> Sent: Tuesday, January 9, 2024 12:02 PM
> To: gcc-patches@gcc.gnu.org
> Cc: nd <n...@arm.com>; Richard Earnshaw <richard.earns...@arm.com>;
> ni...@redhat.com; Kyrylo Tkachov <kyrylo.tkac...@arm.com>
> Subject: [PATCH]Arm: Update early-break tests to accept thumb output too.
>
> Hi All,
>
> The tests I recently added for early break fail in thumb mode
> because in thumb mode `cbz/cbnz` exist and so the cmp+branch
> is fused. This updates the testcases to accept either output.
>
> Tested on arm-none-linux-gnueabihf with -mthumb/-marm.
>
> Ok for master?
>
> Thanks,
> Tamar
>
> gcc/testsuite/ChangeLog:
>
> * gcc.target/arm/vect-early-break-cbranch.c: Accept thumb output.
>
> --- inline copy of patch --
> diff --git a/gcc/testsuite/gcc.target/arm/vect-early-break-cbranch.c
> b/gcc/testsuite/gcc.target/arm/vect-early-break-cbranch.c
> index
> f57bbd8be428d75dcf35aa194b5892fe04124cf6..d5c6d56ec869b8fa868acb78d4c
> 3f40b2a241953 100644
> --- a/gcc/testsuite/gcc.target/arm/vect-early-break-cbranch.c
> +++ b/gcc/testsuite/gcc.target/arm/vect-early-break-cbranch.c
> @@ -16,8 +16,12 @@ int b[N] = {0};
> ** vpmax.u32 d[0-9]+, d[0-9]+, d[0-9]+
> ** vpmax.u32 d[0-9]+, d[0-9]+, d[0-9]+
> ** vmov r[0-9]+, s[0-9]+ @ int
> +** (
> ** cmp r[0-9]+, #0
> ** bne \.L[0-9]+
> +** |
> +** cbnz r[0-9]+, \.L.+
> +** )
If we want to be a bit fancy, I think the scan syntax allows to add a target
selector, you should be able to do
** | { target_thumb }
** cbnz...
Ok for trunk with or without that change.
Thanks,
Kyrill
> ** ...
> */
> void f1 ()
> @@ -37,8 +41,12 @@ void f1 ()
> ** vpmax.u32 d[0-9]+, d[0-9]+, d[0-9]+
> ** vpmax.u32 d[0-9]+, d[0-9]+, d[0-9]+
> ** vmov r[0-9]+, s[0-9]+ @ int
> +** (
> ** cmp r[0-9]+, #0
> ** bne \.L[0-9]+
> +** |
> +** cbnz r[0-9]+, \.L.+
> +** )
> ** ...
> */
> void f2 ()
> @@ -58,8 +66,12 @@ void f2 ()
> ** vpmax.u32 d[0-9]+, d[0-9]+, d[0-9]+
> ** vpmax.u32 d[0-9]+, d[0-9]+, d[0-9]+
> ** vmov r[0-9]+, s[0-9]+ @ int
> +** (
> ** cmp r[0-9]+, #0
> ** bne \.L[0-9]+
> +** |
> +** cbnz r[0-9]+, \.L.+
> +** )
> ** ...
> */
> void f3 ()
> @@ -80,8 +92,12 @@ void f3 ()
> ** vpmax.u32 d[0-9]+, d[0-9]+, d[0-9]+
> ** vpmax.u32 d[0-9]+, d[0-9]+, d[0-9]+
> ** vmov r[0-9]+, s[0-9]+ @ int
> +** (
> ** cmp r[0-9]+, #0
> ** bne \.L[0-9]+
> +** |
> +** cbnz r[0-9]+, \.L.+
> +** )
> ** ...
> */
> void f4 ()
> @@ -101,8 +117,12 @@ void f4 ()
> ** vpmax.u32 d[0-9]+, d[0-9]+, d[0-9]+
> ** vpmax.u32 d[0-9]+, d[0-9]+, d[0-9]+
> ** vmov r[0-9]+, s[0-9]+ @ int
> +** (
> ** cmp r[0-9]+, #0
> ** bne \.L[0-9]+
> +** |
> +** cbnz r[0-9]+, \.L.+
> +** )
> ** ...
> */
> void f5 ()
> @@ -122,8 +142,12 @@ void f5 ()
> ** vpmax.u32 d[0-9]+, d[0-9]+, d[0-9]+
> ** vpmax.u32 d[0-9]+, d[0-9]+, d[0-9]+
> ** vmov r[0-9]+, s[0-9]+ @ int
> +** (
> ** cmp r[0-9]+, #0
> ** bne \.L[0-9]+
> +** |
> +** cbnz r[0-9]+, \.L.+
> +** )
> ** ...
> */
> void f6 ()
>
>
>
>
> --
