On Thu, Sep 9, 2021 at 11:21 AM H.J. Lu via Gcc-patches
<gcc-patches@gcc.gnu.org> wrote:
>
> 1. Add TARGET_AVX256_MOVE_BY_PIECES to perform move by-pieces operation
> with 256-bit AVX instructions.
> 2. Add TARGET_AVX256_STORE_BY_PIECES to perform move and store by-pieces
> operations with 256-bit AVX instructions.
>
> They are enabled only for Intel Alder Lake and Intel processors with
> AVX512.
This patch fixes the regression on znver2 and kabylake, although we
don't know why the mov with ymm would behave differently on non-avx512
(except for alderlake) and avx512 machines, the microarchitecture
tuning seems like a reasonable choice.
I'll install this patch if there's no objections in next 72 hours.
>
> gcc/
>
> PR target/101935
> * config/i386/i386.h (TARGET_AVX256_MOVE_BY_PIECES): New.
> (TARGET_AVX256_STORE_BY_PIECES): Likewise.
> (MOVE_MAX): Check TARGET_AVX256_MOVE_BY_PIECES and
> TARGET_AVX256_STORE_BY_PIECES instead of
> TARGET_AVX256_SPLIT_UNALIGNED_LOAD and
> TARGET_AVX256_SPLIT_UNALIGNED_STORE.
> (STORE_MAX_PIECES): Check TARGET_AVX256_STORE_BY_PIECES instead
> of TARGET_AVX256_SPLIT_UNALIGNED_STORE.
> * config/i386/x86-tune.def (X86_TUNE_AVX256_MOVE_BY_PIECES): New.
> (X86_TUNE_AVX256_STORE_BY_PIECES): Likewise.
>
> gcc/testsuite/
>
> PR target/101935
> * g++.target/i386/pr80566-1.C: Add
> -mtune-ctrl=avx256_store_by_pieces.
> * gcc.target/i386/pr100865-4a.c: Likewise.
> * gcc.target/i386/pr100865-10a.c: Likewise.
> * gcc.target/i386/pr90773-20.c: Likewise.
> * gcc.target/i386/pr90773-21.c: Likewise.
> * gcc.target/i386/pr90773-22.c: Likewise.
> * gcc.target/i386/pr90773-23.c: Likewise.
> * g++.target/i386/pr80566-2.C: Add
> -mtune-ctrl=avx256_move_by_pieces.
> * gcc.target/i386/eh_return-1.c: Likewise.
> * gcc.target/i386/pr90773-26.c: Likewise.
> * gcc.target/i386/pieces-memcpy-12.c: Replace -mtune=haswell
> with -mtune-ctrl=avx256_move_by_pieces.
> * gcc.target/i386/pieces-memcpy-15.c: Likewise.
> * gcc.target/i386/pieces-memset-2.c: Replace -mtune=haswell
> with -mtune-ctrl=avx256_store_by_pieces.
> * gcc.target/i386/pieces-memset-5.c: Likewise.
> * gcc.target/i386/pieces-memset-11.c: Likewise.
> * gcc.target/i386/pieces-memset-14.c: Likewise.
> * gcc.target/i386/pieces-memset-20.c: Likewise.
> * gcc.target/i386/pieces-memset-23.c: Likewise.
> * gcc.target/i386/pieces-memset-29.c: Likewise.
> * gcc.target/i386/pieces-memset-30.c: Likewise.
> * gcc.target/i386/pieces-memset-33.c: Likewise.
> * gcc.target/i386/pieces-memset-34.c: Likewise.
> * gcc.target/i386/pieces-memset-44.c: Likewise.
> * gcc.target/i386/pieces-memset-37.c: Replace -mtune=generic
> with -mtune-ctrl=avx256_store_by_pieces.
> ---
> gcc/config/i386/i386.h | 10 +++++++---
> gcc/config/i386/x86-tune.def | 11 +++++++++++
> gcc/testsuite/g++.target/i386/pr80566-1.C | 2 +-
> gcc/testsuite/g++.target/i386/pr80566-2.C | 2 +-
> gcc/testsuite/gcc.target/i386/eh_return-1.c | 2 +-
> gcc/testsuite/gcc.target/i386/pieces-memcpy-12.c | 2 +-
> gcc/testsuite/gcc.target/i386/pieces-memcpy-15.c | 2 +-
> gcc/testsuite/gcc.target/i386/pieces-memset-11.c | 2 +-
> gcc/testsuite/gcc.target/i386/pieces-memset-14.c | 2 +-
> gcc/testsuite/gcc.target/i386/pieces-memset-2.c | 2 +-
> gcc/testsuite/gcc.target/i386/pieces-memset-20.c | 2 +-
> gcc/testsuite/gcc.target/i386/pieces-memset-23.c | 2 +-
> gcc/testsuite/gcc.target/i386/pieces-memset-29.c | 2 +-
> gcc/testsuite/gcc.target/i386/pieces-memset-30.c | 2 +-
> gcc/testsuite/gcc.target/i386/pieces-memset-33.c | 2 +-
> gcc/testsuite/gcc.target/i386/pieces-memset-34.c | 2 +-
> gcc/testsuite/gcc.target/i386/pieces-memset-37.c | 2 +-
> gcc/testsuite/gcc.target/i386/pieces-memset-44.c | 2 +-
> gcc/testsuite/gcc.target/i386/pieces-memset-5.c | 2 +-
> gcc/testsuite/gcc.target/i386/pr100865-10a.c | 2 +-
> gcc/testsuite/gcc.target/i386/pr100865-4a.c | 2 +-
> gcc/testsuite/gcc.target/i386/pr90773-20.c | 2 +-
> gcc/testsuite/gcc.target/i386/pr90773-21.c | 2 +-
> gcc/testsuite/gcc.target/i386/pr90773-22.c | 2 +-
> gcc/testsuite/gcc.target/i386/pr90773-23.c | 2 +-
> gcc/testsuite/gcc.target/i386/pr90773-26.c | 2 +-
> 26 files changed, 42 insertions(+), 27 deletions(-)
>
> diff --git a/gcc/config/i386/i386.h b/gcc/config/i386/i386.h
> index f671dae9236..9d45fe9611b 100644
> --- a/gcc/config/i386/i386.h
> +++ b/gcc/config/i386/i386.h
> @@ -403,6 +403,10 @@ extern unsigned char ix86_tune_features[X86_TUNE_LAST];
> ix86_tune_features[X86_TUNE_AVOID_LEA_FOR_ADDR]
> #define TARGET_SOFTWARE_PREFETCHING_BENEFICIAL \
> ix86_tune_features[X86_TUNE_SOFTWARE_PREFETCHING_BENEFICIAL]
> +#define TARGET_AVX256_MOVE_BY_PIECES \
> + ix86_tune_features[X86_TUNE_AVX256_MOVE_BY_PIECES]
> +#define TARGET_AVX256_STORE_BY_PIECES \
> + ix86_tune_features[X86_TUNE_AVX256_STORE_BY_PIECES]
> #define TARGET_AVX256_SPLIT_REGS \
> ix86_tune_features[X86_TUNE_AVX256_SPLIT_REGS]
> #define TARGET_GENERAL_REGS_SSE_SPILL \
> @@ -1781,8 +1785,8 @@ typedef struct ix86_args {
> ? 64 \
> : ((TARGET_AVX \
> && !TARGET_PREFER_AVX128 \
> - && !TARGET_AVX256_SPLIT_UNALIGNED_LOAD \
> - && !TARGET_AVX256_SPLIT_UNALIGNED_STORE) \
> + && (TARGET_AVX256_MOVE_BY_PIECES \
> + || TARGET_AVX256_STORE_BY_PIECES)) \
> ? 32 \
> : ((TARGET_SSE2 \
> && TARGET_SSE_UNALIGNED_LOAD_OPTIMAL \
> @@ -1799,7 +1803,7 @@ typedef struct ix86_args {
> ? 64 \
> : ((TARGET_AVX \
> && !TARGET_PREFER_AVX128 \
> - && !TARGET_AVX256_SPLIT_UNALIGNED_STORE) \
> + && TARGET_AVX256_STORE_BY_PIECES) \
> ? 32 \
> : ((TARGET_SSE2 \
> && TARGET_SSE_UNALIGNED_STORE_OPTIMAL) \
> diff --git a/gcc/config/i386/x86-tune.def b/gcc/config/i386/x86-tune.def
> index 8f55da89c92..2f221b1f8c9 100644
> --- a/gcc/config/i386/x86-tune.def
> +++ b/gcc/config/i386/x86-tune.def
> @@ -484,6 +484,17 @@ DEF_TUNE (X86_TUNE_AVX128_OPTIMAL, "avx128_optimal",
> m_BDVER | m_BTVER2
> instructions in the auto-vectorizer. */
> DEF_TUNE (X86_TUNE_AVX256_OPTIMAL, "avx256_optimal", m_CORE_AVX512)
>
> +/* X86_TUNE_AVX256_MOVE_BY_PIECES: Optimize move_by_pieces with 256-bit
> + AVX instructions. */
> +DEF_TUNE (X86_TUNE_AVX256_MOVE_BY_PIECES, "avx256_move_by_pieces",
> + m_ALDERLAKE | m_CORE_AVX512)
> +
> +/* X86_TUNE_AVX256_STORE_BY_PIECES: Optimize store_by_pieces with 256-bit
> + AVX instructions. */
> +DEF_TUNE (X86_TUNE_AVX256_STORE_BY_PIECES, "avx256_store_by_pieces",
> + m_ALDERLAKE | m_CORE_AVX512)
> +
> +/*****************************************************************************/
>
> /*****************************************************************************/
> /* Historical relics: tuning flags that helps a specific old CPU designs
> */
>
> /*****************************************************************************/
> diff --git a/gcc/testsuite/g++.target/i386/pr80566-1.C
> b/gcc/testsuite/g++.target/i386/pr80566-1.C
> index 753f9740529..29da31d6bb6 100644
> --- a/gcc/testsuite/g++.target/i386/pr80566-1.C
> +++ b/gcc/testsuite/g++.target/i386/pr80566-1.C
> @@ -1,5 +1,5 @@
> // { dg-do compile }
> -// { dg-options "-O2 -march=haswell" }
> +// { dg-options "-O2 -march=haswell -mtune-ctrl=avx256_store_by_pieces" }
>
> #include <cstring>
>
> diff --git a/gcc/testsuite/g++.target/i386/pr80566-2.C
> b/gcc/testsuite/g++.target/i386/pr80566-2.C
> index 2a2e82d0a3a..9ffd2c8cadb 100644
> --- a/gcc/testsuite/g++.target/i386/pr80566-2.C
> +++ b/gcc/testsuite/g++.target/i386/pr80566-2.C
> @@ -1,5 +1,5 @@
> // { dg-do compile }
> -// { dg-options "-O2 -march=haswell" }
> +// { dg-options "-O2 -march=haswell -mtune-ctrl=avx256_move_by_pieces" }
>
> #include <cstring>
>
> diff --git a/gcc/testsuite/gcc.target/i386/eh_return-1.c
> b/gcc/testsuite/gcc.target/i386/eh_return-1.c
> index 671ba635e88..b21fd75fc93 100644
> --- a/gcc/testsuite/gcc.target/i386/eh_return-1.c
> +++ b/gcc/testsuite/gcc.target/i386/eh_return-1.c
> @@ -1,5 +1,5 @@
> /* { dg-do compile } */
> -/* { dg-options "-O2 -march=haswell -mno-avx512f" } */
> +/* { dg-options "-O2 -march=haswell -mno-avx512f
> -mtune-ctrl=avx256_move_by_pieces" } */
>
> struct _Unwind_Context
> {
> diff --git a/gcc/testsuite/gcc.target/i386/pieces-memcpy-12.c
> b/gcc/testsuite/gcc.target/i386/pieces-memcpy-12.c
> index f1432ebe517..8a82baff5f1 100644
> --- a/gcc/testsuite/gcc.target/i386/pieces-memcpy-12.c
> +++ b/gcc/testsuite/gcc.target/i386/pieces-memcpy-12.c
> @@ -1,5 +1,5 @@
> /* { dg-do compile } */
> -/* { dg-options "-O2 -mno-avx2 -mavx -mtune=haswell" } */
> +/* { dg-options "-O2 -mno-avx2 -mavx -mtune-ctrl=avx256_move_by_pieces" } */
>
> extern char *dst, *src;
>
> diff --git a/gcc/testsuite/gcc.target/i386/pieces-memcpy-15.c
> b/gcc/testsuite/gcc.target/i386/pieces-memcpy-15.c
> index 695e8c3fa67..4fb94ce7bd5 100644
> --- a/gcc/testsuite/gcc.target/i386/pieces-memcpy-15.c
> +++ b/gcc/testsuite/gcc.target/i386/pieces-memcpy-15.c
> @@ -1,5 +1,5 @@
> /* { dg-do compile } */
> -/* { dg-options "-O2 -mno-avx2 -mavx -mtune=haswell" } */
> +/* { dg-options "-O2 -mno-avx2 -mavx -mtune-ctrl=avx256_move_by_pieces" } */
>
> extern char *dst, *src;
>
> diff --git a/gcc/testsuite/gcc.target/i386/pieces-memset-11.c
> b/gcc/testsuite/gcc.target/i386/pieces-memset-11.c
> index 3fb9038b04f..3802eb7c147 100644
> --- a/gcc/testsuite/gcc.target/i386/pieces-memset-11.c
> +++ b/gcc/testsuite/gcc.target/i386/pieces-memset-11.c
> @@ -1,5 +1,5 @@
> /* { dg-do compile } */
> -/* { dg-options "-O2 -mno-avx2 -mavx -mtune=haswell" } */
> +/* { dg-options "-O2 -mno-avx2 -mavx -mtune-ctrl=avx256_store_by_pieces" } */
>
> extern char *dst;
>
> diff --git a/gcc/testsuite/gcc.target/i386/pieces-memset-14.c
> b/gcc/testsuite/gcc.target/i386/pieces-memset-14.c
> index 45ece482464..10bc085f83b 100644
> --- a/gcc/testsuite/gcc.target/i386/pieces-memset-14.c
> +++ b/gcc/testsuite/gcc.target/i386/pieces-memset-14.c
> @@ -1,5 +1,5 @@
> /* { dg-do compile } */
> -/* { dg-options "-O2 -mno-avx2 -mavx -mtune=haswell" } */
> +/* { dg-options "-O2 -mno-avx2 -mavx -mtune-ctrl=avx256_store_by_pieces" } */
>
> extern char *dst;
>
> diff --git a/gcc/testsuite/gcc.target/i386/pieces-memset-2.c
> b/gcc/testsuite/gcc.target/i386/pieces-memset-2.c
> index 649f344e8f6..4ebfc4df090 100644
> --- a/gcc/testsuite/gcc.target/i386/pieces-memset-2.c
> +++ b/gcc/testsuite/gcc.target/i386/pieces-memset-2.c
> @@ -1,5 +1,5 @@
> /* { dg-do compile } */
> -/* { dg-options "-O2 -mno-avx2 -mavx -mtune=haswell" } */
> +/* { dg-options "-O2 -mno-avx2 -mavx -mtune-ctrl=avx256_store_by_pieces" } */
>
> extern char *dst;
>
> diff --git a/gcc/testsuite/gcc.target/i386/pieces-memset-20.c
> b/gcc/testsuite/gcc.target/i386/pieces-memset-20.c
> index b8747e669e8..1dc4db180d3 100644
> --- a/gcc/testsuite/gcc.target/i386/pieces-memset-20.c
> +++ b/gcc/testsuite/gcc.target/i386/pieces-memset-20.c
> @@ -1,5 +1,5 @@
> /* { dg-do compile } */
> -/* { dg-options "-O2 -mno-avx2 -mavx -mtune=haswell" } */
> +/* { dg-options "-O2 -mno-avx2 -mavx -mtune-ctrl=avx256_store_by_pieces" } */
>
> extern char *dst;
>
> diff --git a/gcc/testsuite/gcc.target/i386/pieces-memset-23.c
> b/gcc/testsuite/gcc.target/i386/pieces-memset-23.c
> index a3b4ffc18e0..9232864024e 100644
> --- a/gcc/testsuite/gcc.target/i386/pieces-memset-23.c
> +++ b/gcc/testsuite/gcc.target/i386/pieces-memset-23.c
> @@ -1,5 +1,5 @@
> /* { dg-do compile } */
> -/* { dg-options "-O2 -mno-avx2 -mavx -mtune=haswell" } */
> +/* { dg-options "-O2 -mno-avx2 -mavx -mtune-ctrl=avx256_store_by_pieces" } */
>
> extern char *dst;
>
> diff --git a/gcc/testsuite/gcc.target/i386/pieces-memset-29.c
> b/gcc/testsuite/gcc.target/i386/pieces-memset-29.c
> index 650e6fe66a5..3b07a64e3f6 100644
> --- a/gcc/testsuite/gcc.target/i386/pieces-memset-29.c
> +++ b/gcc/testsuite/gcc.target/i386/pieces-memset-29.c
> @@ -1,5 +1,5 @@
> /* { dg-do compile } */
> -/* { dg-options "-O2 -mno-avx2 -mavx -mtune=haswell" } */
> +/* { dg-options "-O2 -mno-avx2 -mavx -mtune-ctrl=avx256_store_by_pieces" } */
>
> extern char *dst;
>
> diff --git a/gcc/testsuite/gcc.target/i386/pieces-memset-30.c
> b/gcc/testsuite/gcc.target/i386/pieces-memset-30.c
> index dcec2c700fc..59595e6d3c4 100644
> --- a/gcc/testsuite/gcc.target/i386/pieces-memset-30.c
> +++ b/gcc/testsuite/gcc.target/i386/pieces-memset-30.c
> @@ -1,5 +1,5 @@
> /* { dg-do compile } */
> -/* { dg-options "-O2 -mno-avx512f -mavx2 -mtune=haswell" } */
> +/* { dg-options "-O2 -mno-avx512f -mavx2 -mtune-ctrl=avx256_store_by_pieces"
> } */
>
> extern char *dst;
>
> diff --git a/gcc/testsuite/gcc.target/i386/pieces-memset-33.c
> b/gcc/testsuite/gcc.target/i386/pieces-memset-33.c
> index a87d1b80ae6..68646223b0e 100644
> --- a/gcc/testsuite/gcc.target/i386/pieces-memset-33.c
> +++ b/gcc/testsuite/gcc.target/i386/pieces-memset-33.c
> @@ -1,5 +1,5 @@
> /* { dg-do compile } */
> -/* { dg-options "-O2 -mno-avx2 -mavx -mtune=haswell" } */
> +/* { dg-options "-O2 -mno-avx2 -mavx -mtune-ctrl=avx256_store_by_pieces" } */
>
> extern char *dst;
>
> diff --git a/gcc/testsuite/gcc.target/i386/pieces-memset-34.c
> b/gcc/testsuite/gcc.target/i386/pieces-memset-34.c
> index 0c2f1ee6049..52a16a0292d 100644
> --- a/gcc/testsuite/gcc.target/i386/pieces-memset-34.c
> +++ b/gcc/testsuite/gcc.target/i386/pieces-memset-34.c
> @@ -1,5 +1,5 @@
> /* { dg-do compile } */
> -/* { dg-options "-O2 -mno-avx512f -mavx2 -mtune=haswell" } */
> +/* { dg-options "-O2 -mno-avx512f -mavx2 -mtune-ctrl=avx256_store_by_pieces"
> } */
>
> extern char *dst;
>
> diff --git a/gcc/testsuite/gcc.target/i386/pieces-memset-37.c
> b/gcc/testsuite/gcc.target/i386/pieces-memset-37.c
> index ec59497b116..fd09bd153ce 100644
> --- a/gcc/testsuite/gcc.target/i386/pieces-memset-37.c
> +++ b/gcc/testsuite/gcc.target/i386/pieces-memset-37.c
> @@ -1,5 +1,5 @@
> /* { dg-do compile } */
> -/* { dg-options "-O2 -mno-avx512f -mavx2 -mtune=generic" } */
> +/* { dg-options "-O2 -mno-avx512f -mavx2 -mtune-ctrl=avx256_store_by_pieces"
> } */
>
> void
> foo (int a1, int a2, int a3, int a4, int a5, int a6, int x, char *dst)
> diff --git a/gcc/testsuite/gcc.target/i386/pieces-memset-44.c
> b/gcc/testsuite/gcc.target/i386/pieces-memset-44.c
> index ecc31be1a34..5986f8e8b23 100644
> --- a/gcc/testsuite/gcc.target/i386/pieces-memset-44.c
> +++ b/gcc/testsuite/gcc.target/i386/pieces-memset-44.c
> @@ -1,5 +1,5 @@
> /* { dg-do compile } */
> -/* { dg-options "-O2 -mno-avx2 -mavx -mtune=haswell" } */
> +/* { dg-options "-O2 -mno-avx2 -mavx -mtune-ctrl=avx256_store_by_pieces" } */
>
> extern char *dst;
>
> diff --git a/gcc/testsuite/gcc.target/i386/pieces-memset-5.c
> b/gcc/testsuite/gcc.target/i386/pieces-memset-5.c
> index 3e95db5efef..e2379df71aa 100644
> --- a/gcc/testsuite/gcc.target/i386/pieces-memset-5.c
> +++ b/gcc/testsuite/gcc.target/i386/pieces-memset-5.c
> @@ -1,5 +1,5 @@
> /* { dg-do compile } */
> -/* { dg-options "-O2 -mno-avx2 -mavx -mtune=haswell" } */
> +/* { dg-options "-O2 -mno-avx2 -mavx -mtune-ctrl=avx256_store_by_pieces" } */
>
> extern char *dst;
>
> diff --git a/gcc/testsuite/gcc.target/i386/pr100865-10a.c
> b/gcc/testsuite/gcc.target/i386/pr100865-10a.c
> index 98b6dfb16f3..1d849a381c0 100644
> --- a/gcc/testsuite/gcc.target/i386/pr100865-10a.c
> +++ b/gcc/testsuite/gcc.target/i386/pr100865-10a.c
> @@ -1,5 +1,5 @@
> /* { dg-do compile { target int128 } } */
> -/* { dg-options "-O3 -march=skylake" } */
> +/* { dg-options "-O3 -march=skylake -mtune-ctrl=avx256_store_by_pieces" } */
>
> extern __int128 array[16];
>
> diff --git a/gcc/testsuite/gcc.target/i386/pr100865-4a.c
> b/gcc/testsuite/gcc.target/i386/pr100865-4a.c
> index 365487337ae..8609d1128b8 100644
> --- a/gcc/testsuite/gcc.target/i386/pr100865-4a.c
> +++ b/gcc/testsuite/gcc.target/i386/pr100865-4a.c
> @@ -1,5 +1,5 @@
> /* { dg-do compile } */
> -/* { dg-options "-O2 -march=skylake" } */
> +/* { dg-options "-O2 -march=skylake -mtune-ctrl=avx256_store_by_pieces" } */
>
> extern char array[64];
>
> diff --git a/gcc/testsuite/gcc.target/i386/pr90773-20.c
> b/gcc/testsuite/gcc.target/i386/pr90773-20.c
> index e61e405f2b6..884a5502b59 100644
> --- a/gcc/testsuite/gcc.target/i386/pr90773-20.c
> +++ b/gcc/testsuite/gcc.target/i386/pr90773-20.c
> @@ -1,5 +1,5 @@
> /* { dg-do compile } */
> -/* { dg-options "-O2 -march=skylake" } */
> +/* { dg-options "-O2 -march=skylake -mtune-ctrl=avx256_store_by_pieces" } */
>
> extern char *dst;
>
> diff --git a/gcc/testsuite/gcc.target/i386/pr90773-21.c
> b/gcc/testsuite/gcc.target/i386/pr90773-21.c
> index 16ad17f3cbb..5bbb387a3ea 100644
> --- a/gcc/testsuite/gcc.target/i386/pr90773-21.c
> +++ b/gcc/testsuite/gcc.target/i386/pr90773-21.c
> @@ -1,5 +1,5 @@
> /* { dg-do compile } */
> -/* { dg-options "-O2 -march=skylake" } */
> +/* { dg-options "-O2 -march=skylake -mtune-ctrl=avx256_store_by_pieces" } */
>
> extern char *dst;
>
> diff --git a/gcc/testsuite/gcc.target/i386/pr90773-22.c
> b/gcc/testsuite/gcc.target/i386/pr90773-22.c
> index 45a8ff65a84..245a436b7eb 100644
> --- a/gcc/testsuite/gcc.target/i386/pr90773-22.c
> +++ b/gcc/testsuite/gcc.target/i386/pr90773-22.c
> @@ -1,5 +1,5 @@
> /* { dg-do compile } */
> -/* { dg-options "-O2 -march=skylake" } */
> +/* { dg-options "-O2 -march=skylake -mtune-ctrl=avx256_store_by_pieces" } */
>
> extern char *dst;
>
> diff --git a/gcc/testsuite/gcc.target/i386/pr90773-23.c
> b/gcc/testsuite/gcc.target/i386/pr90773-23.c
> index 9256ce10ff0..ca4a86f30b8 100644
> --- a/gcc/testsuite/gcc.target/i386/pr90773-23.c
> +++ b/gcc/testsuite/gcc.target/i386/pr90773-23.c
> @@ -1,5 +1,5 @@
> /* { dg-do compile } */
> -/* { dg-options "-O2 -march=skylake" } */
> +/* { dg-options "-O2 -march=skylake -mtune-ctrl=avx256_store_by_pieces" } */
>
> extern char *dst;
>
> diff --git a/gcc/testsuite/gcc.target/i386/pr90773-26.c
> b/gcc/testsuite/gcc.target/i386/pr90773-26.c
> index b2513c3a9c8..76fb79f2e20 100644
> --- a/gcc/testsuite/gcc.target/i386/pr90773-26.c
> +++ b/gcc/testsuite/gcc.target/i386/pr90773-26.c
> @@ -1,5 +1,5 @@
> /* { dg-do compile } */
> -/* { dg-options "-O2 -march=skylake" } */
> +/* { dg-options "-O2 -march=skylake -mtune-ctrl=avx256_move_by_pieces" } */
>
> struct S
> {
> --
> 2.31.1
>
--
BR,
Hongtao
