On Wed, Aug 17, 2016 at 10:11 PM, H.J. Lu <hongjiu...@intel.com> wrote:
> builtin_memset_gen_str returns a register used for memset, which only
> supports integer registers. But a target may use vector registers in
> memmset. This patch adds a TARGET_GEN_MEMSET_VALUE hook to duplicate
> QImode value to mode derived from STORE_MAX_PIECES, which can be used
> with vector instructions. The default hook is the same as the original
> builtin_memset_gen_str. A target can override it to support vector
> instructions for STORE_MAX_PIECES.
>
> Tested on x86-64 and i686. Any comments?
It looks to me you have attached an older version of the patch,
STORE_MAX_PIECES change in i386.h is already in the mainline.
(The patch needs middle-end review first).
Uros.
> H.J.
> ---
> gcc/
>
> * builtins.c (builtin_memset_gen_str): Call targetm.gen_memset_value.
> (default_gen_memset_value): New function.
> * target.def (gen_memset_value): New hook.
> * targhooks.c: Inclue "expmed.h" and "builtins.h".
> (default_gen_memset_value): New function.
> * targhooks.h (default_gen_memset_value): New prototype.
> * config/i386/i386.c (ix86_gen_memset_value): New function.
> (TARGET_GEN_MEMSET_VALUE): New.
> * config/i386/i386.h (STORE_MAX_PIECES): Likewise.
> * doc/tm.texi.in: Add TARGET_GEN_MEMSET_VALUE hook.
> * doc/tm.texi: Updated.
>
> gcc/testsuite/
>
> * gcc.target/i386/pieces-memset-1.c: New test.
> * gcc.target/i386/pieces-memset-2.c: Likewise.
> * gcc.target/i386/pieces-memset-3.c: Likewise.
> * gcc.target/i386/pieces-memset-4.c: Likewise.
> * gcc.target/i386/pieces-memset-5.c: Likewise.
> * gcc.target/i386/pieces-memset-6.c: Likewise.
> * gcc.target/i386/pieces-memset-7.c: Likewise.
> * gcc.target/i386/pieces-memset-8.c: Likewise.
> * gcc.target/i386/pieces-memset-9.c: Likewise.
> * gcc.target/i386/pieces-memset-10.c: Likewise.
> * gcc.target/i386/pieces-memset-11.c: Likewise.
> * gcc.target/i386/pieces-memset-12.c: Likewise.
> * gcc.target/i386/pieces-memset-13.c: Likewise.
> * gcc.target/i386/pieces-memset-14.c: Likewise.
> * gcc.target/i386/pieces-memset-15.c: Likewise.
> * gcc.target/i386/pieces-memset-16.c: Likewise.
> * gcc.target/i386/pieces-memset-17.c: Likewise.
> * gcc.target/i386/pieces-memset-18.c: Likewise.
> * gcc.target/i386/pieces-memset-19.c: Likewise.
> * gcc.target/i386/pieces-memset-20.c: Likewise.
> * gcc.target/i386/pieces-memset-21.c: Likewise.
> * gcc.target/i386/pieces-memset-22.c: Likewise.
> * gcc.target/i386/pieces-memset-23.c: Likewise.
> * gcc.target/i386/pieces-memset-24.c: Likewise.
> * gcc.target/i386/pieces-memset-25.c: Likewise.
> * gcc.target/i386/pieces-memset-26.c: Likewise.
> * gcc.target/i386/pieces-memset-27.c: Likewise.
> * gcc.target/i386/pieces-memset-28.c: Likewise.
> * gcc.target/i386/pieces-memset-29.c: Likewise.
> * gcc.target/i386/pieces-memset-30.c: Likewise.
> * gcc.target/i386/pieces-memset-31.c: Likewise.
> * gcc.target/i386/pieces-memset-32.c: Likewise.
> * gcc.target/i386/pieces-memset-33.c: Likewise.
> * gcc.target/i386/pieces-memset-34.c: Likewise.
> * gcc.target/i386/pieces-memset-35.c: Likewise.
> * gcc.target/i386/pieces-memset-36.c: Likewise.
> * gcc.target/i386/pieces-memset-37.c: Likewise.
> * gcc.target/i386/pieces-memset-38.c: Likewise.
> * gcc.target/i386/pieces-memset-39.c: Likewise.
> * gcc.target/i386/pieces-memset-40.c: Likewise.
> * gcc.target/i386/pieces-memset-41.c: Likewise.
> * gcc.target/i386/pieces-memset-42.c: Likewise.
> * gcc.target/i386/pieces-memset-43.c: Likewise.
> * gcc.target/i386/pieces-memset-44.c: Likewise.
> ---
> gcc/builtins.c | 32 ++++++++++++--------
> gcc/config/i386/i386.c | 38
> ++++++++++++++++++++++++
> gcc/config/i386/i386.h | 13 ++++++++
> gcc/doc/tm.texi | 7 +++++
> gcc/doc/tm.texi.in | 2 ++
> gcc/target.def | 9 ++++++
> gcc/targhooks.h | 1 +
> gcc/testsuite/gcc.target/i386/pieces-memset-1.c | 12 ++++++++
> gcc/testsuite/gcc.target/i386/pieces-memset-10.c | 12 ++++++++
> gcc/testsuite/gcc.target/i386/pieces-memset-11.c | 12 ++++++++
> gcc/testsuite/gcc.target/i386/pieces-memset-12.c | 12 ++++++++
> gcc/testsuite/gcc.target/i386/pieces-memset-13.c | 12 ++++++++
> gcc/testsuite/gcc.target/i386/pieces-memset-14.c | 12 ++++++++
> gcc/testsuite/gcc.target/i386/pieces-memset-15.c | 12 ++++++++
> gcc/testsuite/gcc.target/i386/pieces-memset-16.c | 12 ++++++++
> gcc/testsuite/gcc.target/i386/pieces-memset-17.c | 12 ++++++++
> gcc/testsuite/gcc.target/i386/pieces-memset-18.c | 12 ++++++++
> gcc/testsuite/gcc.target/i386/pieces-memset-19.c | 13 ++++++++
> gcc/testsuite/gcc.target/i386/pieces-memset-2.c | 12 ++++++++
> gcc/testsuite/gcc.target/i386/pieces-memset-20.c | 13 ++++++++
> gcc/testsuite/gcc.target/i386/pieces-memset-21.c | 13 ++++++++
> gcc/testsuite/gcc.target/i386/pieces-memset-22.c | 13 ++++++++
> gcc/testsuite/gcc.target/i386/pieces-memset-23.c | 13 ++++++++
> gcc/testsuite/gcc.target/i386/pieces-memset-24.c | 13 ++++++++
> gcc/testsuite/gcc.target/i386/pieces-memset-25.c | 13 ++++++++
> gcc/testsuite/gcc.target/i386/pieces-memset-26.c | 13 ++++++++
> gcc/testsuite/gcc.target/i386/pieces-memset-27.c | 13 ++++++++
> gcc/testsuite/gcc.target/i386/pieces-memset-28.c | 13 ++++++++
> gcc/testsuite/gcc.target/i386/pieces-memset-29.c | 13 ++++++++
> gcc/testsuite/gcc.target/i386/pieces-memset-3.c | 13 ++++++++
> gcc/testsuite/gcc.target/i386/pieces-memset-30.c | 13 ++++++++
> gcc/testsuite/gcc.target/i386/pieces-memset-31.c | 13 ++++++++
> gcc/testsuite/gcc.target/i386/pieces-memset-32.c | 13 ++++++++
> gcc/testsuite/gcc.target/i386/pieces-memset-33.c | 13 ++++++++
> gcc/testsuite/gcc.target/i386/pieces-memset-34.c | 13 ++++++++
> gcc/testsuite/gcc.target/i386/pieces-memset-35.c | 13 ++++++++
> gcc/testsuite/gcc.target/i386/pieces-memset-36.c | 13 ++++++++
> gcc/testsuite/gcc.target/i386/pieces-memset-37.c | 13 ++++++++
> gcc/testsuite/gcc.target/i386/pieces-memset-38.c | 13 ++++++++
> gcc/testsuite/gcc.target/i386/pieces-memset-39.c | 13 ++++++++
> gcc/testsuite/gcc.target/i386/pieces-memset-4.c | 12 ++++++++
> gcc/testsuite/gcc.target/i386/pieces-memset-40.c | 13 ++++++++
> gcc/testsuite/gcc.target/i386/pieces-memset-41.c | 12 ++++++++
> gcc/testsuite/gcc.target/i386/pieces-memset-42.c | 13 ++++++++
> gcc/testsuite/gcc.target/i386/pieces-memset-43.c | 13 ++++++++
> gcc/testsuite/gcc.target/i386/pieces-memset-44.c | 13 ++++++++
> gcc/testsuite/gcc.target/i386/pieces-memset-5.c | 12 ++++++++
> gcc/testsuite/gcc.target/i386/pieces-memset-6.c | 12 ++++++++
> gcc/testsuite/gcc.target/i386/pieces-memset-7.c | 12 ++++++++
> gcc/testsuite/gcc.target/i386/pieces-memset-8.c | 12 ++++++++
> gcc/testsuite/gcc.target/i386/pieces-memset-9.c | 12 ++++++++
> 51 files changed, 643 insertions(+), 13 deletions(-)
> create mode 100644 gcc/testsuite/gcc.target/i386/pieces-memset-1.c
> create mode 100644 gcc/testsuite/gcc.target/i386/pieces-memset-10.c
> create mode 100644 gcc/testsuite/gcc.target/i386/pieces-memset-11.c
> create mode 100644 gcc/testsuite/gcc.target/i386/pieces-memset-12.c
> create mode 100644 gcc/testsuite/gcc.target/i386/pieces-memset-13.c
> create mode 100644 gcc/testsuite/gcc.target/i386/pieces-memset-14.c
> create mode 100644 gcc/testsuite/gcc.target/i386/pieces-memset-15.c
> create mode 100644 gcc/testsuite/gcc.target/i386/pieces-memset-16.c
> create mode 100644 gcc/testsuite/gcc.target/i386/pieces-memset-17.c
> create mode 100644 gcc/testsuite/gcc.target/i386/pieces-memset-18.c
> create mode 100644 gcc/testsuite/gcc.target/i386/pieces-memset-19.c
> create mode 100644 gcc/testsuite/gcc.target/i386/pieces-memset-2.c
> create mode 100644 gcc/testsuite/gcc.target/i386/pieces-memset-20.c
> create mode 100644 gcc/testsuite/gcc.target/i386/pieces-memset-21.c
> create mode 100644 gcc/testsuite/gcc.target/i386/pieces-memset-22.c
> create mode 100644 gcc/testsuite/gcc.target/i386/pieces-memset-23.c
> create mode 100644 gcc/testsuite/gcc.target/i386/pieces-memset-24.c
> create mode 100644 gcc/testsuite/gcc.target/i386/pieces-memset-25.c
> create mode 100644 gcc/testsuite/gcc.target/i386/pieces-memset-26.c
> create mode 100644 gcc/testsuite/gcc.target/i386/pieces-memset-27.c
> create mode 100644 gcc/testsuite/gcc.target/i386/pieces-memset-28.c
> create mode 100644 gcc/testsuite/gcc.target/i386/pieces-memset-29.c
> create mode 100644 gcc/testsuite/gcc.target/i386/pieces-memset-3.c
> create mode 100644 gcc/testsuite/gcc.target/i386/pieces-memset-30.c
> create mode 100644 gcc/testsuite/gcc.target/i386/pieces-memset-31.c
> create mode 100644 gcc/testsuite/gcc.target/i386/pieces-memset-32.c
> create mode 100644 gcc/testsuite/gcc.target/i386/pieces-memset-33.c
> create mode 100644 gcc/testsuite/gcc.target/i386/pieces-memset-34.c
> create mode 100644 gcc/testsuite/gcc.target/i386/pieces-memset-35.c
> create mode 100644 gcc/testsuite/gcc.target/i386/pieces-memset-36.c
> create mode 100644 gcc/testsuite/gcc.target/i386/pieces-memset-37.c
> create mode 100644 gcc/testsuite/gcc.target/i386/pieces-memset-38.c
> create mode 100644 gcc/testsuite/gcc.target/i386/pieces-memset-39.c
> create mode 100644 gcc/testsuite/gcc.target/i386/pieces-memset-4.c
> create mode 100644 gcc/testsuite/gcc.target/i386/pieces-memset-40.c
> create mode 100644 gcc/testsuite/gcc.target/i386/pieces-memset-41.c
> create mode 100644 gcc/testsuite/gcc.target/i386/pieces-memset-42.c
> create mode 100644 gcc/testsuite/gcc.target/i386/pieces-memset-43.c
> create mode 100644 gcc/testsuite/gcc.target/i386/pieces-memset-44.c
> create mode 100644 gcc/testsuite/gcc.target/i386/pieces-memset-5.c
> create mode 100644 gcc/testsuite/gcc.target/i386/pieces-memset-6.c
> create mode 100644 gcc/testsuite/gcc.target/i386/pieces-memset-7.c
> create mode 100644 gcc/testsuite/gcc.target/i386/pieces-memset-8.c
> create mode 100644 gcc/testsuite/gcc.target/i386/pieces-memset-9.c
>
> diff --git a/gcc/builtins.c b/gcc/builtins.c
> index 03a0dc8..79be38e 100644
> --- a/gcc/builtins.c
> +++ b/gcc/builtins.c
> @@ -3411,21 +3411,10 @@ static rtx
> builtin_memset_gen_str (void *data, HOST_WIDE_INT offset ATTRIBUTE_UNUSED,
> machine_mode mode)
> {
> - rtx target, coeff;
> - size_t size;
> - char *p;
> -
> - size = GET_MODE_SIZE (mode);
> - if (size == 1)
> + if (GET_MODE_SIZE (mode) == 1)
> return (rtx) data;
>
> - p = XALLOCAVEC (char, size);
> - memset (p, 1, size);
> - coeff = c_readstr (p, mode);
> -
> - target = convert_to_mode (mode, (rtx) data, 1);
> - target = expand_mult (mode, target, coeff, NULL_RTX, 1);
> - return force_reg (mode, target);
> + return targetm.gen_memset_value ((rtx) data, mode);
> }
>
> /* Expand expression EXP, which is a call to the memset builtin. Return
> @@ -10172,3 +10161,20 @@ is_inexpensive_builtin (tree decl)
>
> return false;
> }
> +
> +/* Default implementation of TARGET_GEN_MEMSET_VALUE. */
> +
> +rtx
> +default_gen_memset_value (rtx data, machine_mode mode)
> +{
> + rtx target, coeff;
> + char *p;
> + size_t size = GET_MODE_SIZE (mode);
> + p = XALLOCAVEC (char, size);
> + memset (p, 1, size);
> + coeff = c_readstr (p, mode);
> +
> + target = convert_to_mode (mode, (rtx) data, 1);
> + target = expand_mult (mode, target, coeff, NULL_RTX, 1);
> + return force_reg (mode, target);
> +}
> diff --git a/gcc/config/i386/i386.c b/gcc/config/i386/i386.c
> index 3805817..23ec694 100644
> --- a/gcc/config/i386/i386.c
> +++ b/gcc/config/i386/i386.c
> @@ -55314,6 +55314,41 @@ ix86_optab_supported_p (int op, machine_mode mode1,
> machine_mode,
> }
> }
>
> +/* Implement the TARGET_GEN_MEMSET_VALUE hook. */
> +
> +static rtx
> +ix86_gen_memset_value (rtx data, machine_mode mode)
> +{
> + if (GET_MODE_SIZE (mode) <= 8)
> + return default_gen_memset_value (data, mode);
> +
> + if (GET_MODE_SIZE (mode) != 16)
> + gcc_unreachable ();
> +
> + rtx one, target;
> + machine_mode one_mode;
> +
> + if (TARGET_AVX2)
> + {
> + one_mode = QImode;
> + one = data;
> + }
> + else
> + {
> + one_mode = SImode;
> + one = default_gen_memset_value (data, one_mode);
> + }
> +
> + machine_mode vector_mode
> + = mode_for_vector (one_mode,
> + GET_MODE_SIZE (mode) / GET_MODE_SIZE (one_mode));
> + target = gen_reg_rtx (vector_mode);
> + if (ix86_vector_duplicate_value (vector_mode, target, one))
> + return convert_to_mode (mode, target, 1);
> + else
> + gcc_unreachable ();
> +}
> +
> /* Address space support.
>
> This is not "far pointers" in the 16-bit sense, but an easy way
> @@ -55814,6 +55849,9 @@ ix86_addr_space_zero_address_valid (addr_space_t as)
> #undef TARGET_HARD_REGNO_SCRATCH_OK
> #define TARGET_HARD_REGNO_SCRATCH_OK ix86_hard_regno_scratch_ok
>
> +#undef TARGET_GEN_MEMSET_VALUE
> +#define TARGET_GEN_MEMSET_VALUE ix86_gen_memset_value
> +
> struct gcc_target targetm = TARGET_INITIALIZER;
>
> #include "gt-i386.h"
> diff --git a/gcc/config/i386/i386.h b/gcc/config/i386/i386.h
> index 8751143..7ce2e4a 100644
> --- a/gcc/config/i386/i386.h
> +++ b/gcc/config/i386/i386.h
> @@ -1963,6 +1963,19 @@ typedef struct ix86_args {
> && TARGET_SSE_UNALIGNED_STORE_OPTIMAL) \
> ? GET_MODE_SIZE (TImode) : UNITS_PER_WORD)
>
> +/* STORE_MAX_PIECES is the number of bytes at a time which we can
> + store efficiently.
> +
> + ??? We should use TImode in 32-bit mode and use OImode or XImode
> + if they are available. But since by_pieces_ninsns determines the
> + widest mode with MAX_FIXED_MODE_SIZE, we can only use TImode in
> + 64-bit mode. */
> +#define STORE_MAX_PIECES \
> + ((TARGET_64BIT \
> + && TARGET_SSE2 \
> + && TARGET_SSE_UNALIGNED_STORE_OPTIMAL) \
> + ? GET_MODE_SIZE (TImode) : UNITS_PER_WORD)
> +
> /* If a memory-to-memory move would take MOVE_RATIO or more simple
> move-instruction pairs, we will do a movmem or libcall instead.
> Increasing the value will always make code faster, but eventually
> diff --git a/gcc/doc/tm.texi b/gcc/doc/tm.texi
> index 9edb006..abab7dd 100644
> --- a/gcc/doc/tm.texi
> +++ b/gcc/doc/tm.texi
> @@ -11458,6 +11458,13 @@ This function prepares to emit a conditional
> comparison within a sequence
> @var{bit_code} is @code{AND} or @code{IOR}, which is the op on the compares.
> @end deftypefn
>
> +@deftypefn {Target Hook} rtx TARGET_GEN_MEMSET_VALUE (rtx @var{data},
> machine_mode @var{mode})
> +This functio returns the RTL of a register containing
> +@code{GET_MODE_SIZE (@var{mode})} consecutive copies of the unsigned
> +char value given in the RTL register @var{data}. For example, if
> +@var{mode} is 4 bytes wide, return the RTL for 0x01010101*@var{data}.
> +@end deftypefn
> +
> @deftypefn {Target Hook} unsigned TARGET_LOOP_UNROLL_ADJUST (unsigned
> @var{nunroll}, struct loop *@var{loop})
> This target hook returns a new value for the number of times @var{loop}
> should be unrolled. The parameter @var{nunroll} is the number of times
> diff --git a/gcc/doc/tm.texi.in b/gcc/doc/tm.texi.in
> index a72c3d8..564c11ba 100644
> --- a/gcc/doc/tm.texi.in
> +++ b/gcc/doc/tm.texi.in
> @@ -8112,6 +8112,8 @@ build_type_attribute_variant (@var{mdecl},
>
> @hook TARGET_GEN_CCMP_NEXT
>
> +@hook TARGET_GEN_MEMSET_VALUE
> +
> @hook TARGET_LOOP_UNROLL_ADJUST
>
> @defmac POWI_MAX_MULTS
> diff --git a/gcc/target.def b/gcc/target.def
> index 929d9ea..c4eb6b4 100644
> --- a/gcc/target.def
> +++ b/gcc/target.def
> @@ -2631,6 +2631,15 @@ DEFHOOK
> rtx, (rtx *prep_seq, rtx *gen_seq, rtx prev, int cmp_code, tree op0, tree
> op1, int bit_code),
> NULL)
>
> +DEFHOOK
> +(gen_memset_value,
> + "This functio returns the RTL of a register containing\n\
> +@code{GET_MODE_SIZE (@var{mode})} consecutive copies of the unsigned\n\
> +char value given in the RTL register @var{data}. For example, if\n\
> +@var{mode} is 4 bytes wide, return the RTL for 0x01010101*@var{data}.",
> + rtx, (rtx data, machine_mode mode),
> + default_gen_memset_value)
> +
> /* Return a new value for loop unroll size. */
> DEFHOOK
> (loop_unroll_adjust,
> diff --git a/gcc/targhooks.h b/gcc/targhooks.h
> index 2e7ca72..798a998 100644
> --- a/gcc/targhooks.h
> +++ b/gcc/targhooks.h
> @@ -257,5 +257,6 @@ extern bool default_optab_supported_p (int, machine_mode,
> machine_mode,
> optimization_type);
>
> extern unsigned int default_max_noce_ifcvt_seq_cost (edge);
> +extern rtx default_gen_memset_value (rtx, machine_mode);
>
> #endif /* GCC_TARGHOOKS_H */
> diff --git a/gcc/testsuite/gcc.target/i386/pieces-memset-1.c
> b/gcc/testsuite/gcc.target/i386/pieces-memset-1.c
> new file mode 100644
> index 0000000..b33c073
> --- /dev/null
> +++ b/gcc/testsuite/gcc.target/i386/pieces-memset-1.c
> @@ -0,0 +1,12 @@
> +/* { dg-do compile { target { ! ia32 } } } */
> +/* { dg-options "-O2 -mno-avx -msse2 -mtune=generic" } */
> +
> +extern char *dst;
> +
> +void
> +foo (int x)
> +{
> + __builtin_memset (dst, x, 64);
> +}
> +
> +/* { dg-final { scan-assembler-times "movups\[ \\t\]+\[^\n\]*%xmm" 4 } } */
> diff --git a/gcc/testsuite/gcc.target/i386/pieces-memset-10.c
> b/gcc/testsuite/gcc.target/i386/pieces-memset-10.c
> new file mode 100644
> index 0000000..90df34a
> --- /dev/null
> +++ b/gcc/testsuite/gcc.target/i386/pieces-memset-10.c
> @@ -0,0 +1,12 @@
> +/* { dg-do compile { target { ! ia32 } } } */
> +/* { dg-options "-O2 -mno-avx -msse2 -mtune=generic" } */
> +
> +extern char *dst;
> +
> +void
> +foo (void)
> +{
> + __builtin_memset (dst, 3, 64);
> +}
> +
> +/* { dg-final { scan-assembler-times "movups\[ \\t\]+\[^\n\]*%xmm" 4 } } */
> diff --git a/gcc/testsuite/gcc.target/i386/pieces-memset-11.c
> b/gcc/testsuite/gcc.target/i386/pieces-memset-11.c
> new file mode 100644
> index 0000000..e234196
> --- /dev/null
> +++ b/gcc/testsuite/gcc.target/i386/pieces-memset-11.c
> @@ -0,0 +1,12 @@
> +/* { dg-do compile { target { ! ia32 } } } */
> +/* { dg-options "-O2 -mno-avx2 -mavx -mtune=haswell" } */
> +
> +extern char *dst;
> +
> +void
> +foo (void)
> +{
> + __builtin_memset (dst, 3, 64);
> +}
> +
> +/* { dg-final { scan-assembler-times "vmovups\[ \\t\]+\[^\n\]*%xmm" 4 } } */
> diff --git a/gcc/testsuite/gcc.target/i386/pieces-memset-12.c
> b/gcc/testsuite/gcc.target/i386/pieces-memset-12.c
> new file mode 100644
> index 0000000..ebc0db1
> --- /dev/null
> +++ b/gcc/testsuite/gcc.target/i386/pieces-memset-12.c
> @@ -0,0 +1,12 @@
> +/* { dg-do compile { target { ! ia32 } } } */
> +/* { dg-options "-O2 -mavx512f -mtune=generic" } */
> +
> +extern char *dst;
> +
> +void
> +foo (void)
> +{
> + __builtin_memset (dst, 3, 66);
> +}
> +
> +/* { dg-final { scan-assembler-times "vmovups\[ \\t\]+\[^\n\]*%xmm" 4 } } */
> diff --git a/gcc/testsuite/gcc.target/i386/pieces-memset-13.c
> b/gcc/testsuite/gcc.target/i386/pieces-memset-13.c
> new file mode 100644
> index 0000000..251061f
> --- /dev/null
> +++ b/gcc/testsuite/gcc.target/i386/pieces-memset-13.c
> @@ -0,0 +1,12 @@
> +/* { dg-do compile { target { ! ia32 } } } */
> +/* { dg-options "-O2 -mno-avx -msse2 -mtune=generic" } */
> +
> +extern char *dst;
> +
> +void
> +foo (void)
> +{
> + __builtin_memset (dst, 3, 33);
> +}
> +
> +/* { dg-final { scan-assembler-times "movups\[ \\t\]+\[^\n\]*%xmm" 2 } } */
> diff --git a/gcc/testsuite/gcc.target/i386/pieces-memset-14.c
> b/gcc/testsuite/gcc.target/i386/pieces-memset-14.c
> new file mode 100644
> index 0000000..e6426e6
> --- /dev/null
> +++ b/gcc/testsuite/gcc.target/i386/pieces-memset-14.c
> @@ -0,0 +1,12 @@
> +/* { dg-do compile { target { ! ia32 } } } */
> +/* { dg-options "-O2 -mno-avx2 -mavx -mtune=haswell" } */
> +
> +extern char *dst;
> +
> +void
> +foo (void)
> +{
> + __builtin_memset (dst, 3, 33);
> +}
> +
> +/* { dg-final { scan-assembler-times "vmovups\[ \\t\]+\[^\n\]*%xmm" 2 } } */
> diff --git a/gcc/testsuite/gcc.target/i386/pieces-memset-15.c
> b/gcc/testsuite/gcc.target/i386/pieces-memset-15.c
> new file mode 100644
> index 0000000..7ade143
> --- /dev/null
> +++ b/gcc/testsuite/gcc.target/i386/pieces-memset-15.c
> @@ -0,0 +1,12 @@
> +/* { dg-do compile { target { ! ia32 } } } */
> +/* { dg-options "-O2 -mavx512f -mtune=generic" } */
> +
> +extern char *dst;
> +
> +void
> +foo (void)
> +{
> + __builtin_memset (dst, 3, 33);
> +}
> +
> +/* { dg-final { scan-assembler-times "vmovups\[ \\t\]+\[^\n\]*%xmm" 2 } } */
> diff --git a/gcc/testsuite/gcc.target/i386/pieces-memset-16.c
> b/gcc/testsuite/gcc.target/i386/pieces-memset-16.c
> new file mode 100644
> index 0000000..d8ef81e
> --- /dev/null
> +++ b/gcc/testsuite/gcc.target/i386/pieces-memset-16.c
> @@ -0,0 +1,12 @@
> +/* { dg-do compile { target { ! ia32 } } } */
> +/* { dg-options "-O2 -mno-avx -msse2 -mtune=generic" } */
> +
> +extern char *dst;
> +
> +void
> +foo (void)
> +{
> + __builtin_memset (dst, 3, 17);
> +}
> +
> +/* { dg-final { scan-assembler-times "movups\[ \\t\]+\[^\n\]*%xmm" 1 } } */
> diff --git a/gcc/testsuite/gcc.target/i386/pieces-memset-17.c
> b/gcc/testsuite/gcc.target/i386/pieces-memset-17.c
> new file mode 100644
> index 0000000..c997cda
> --- /dev/null
> +++ b/gcc/testsuite/gcc.target/i386/pieces-memset-17.c
> @@ -0,0 +1,12 @@
> +/* { dg-do compile { target { ! ia32 } } } */
> +/* { dg-options "-O2 -mno-avx2 -mavx -mtune=generic" } */
> +
> +extern char *dst;
> +
> +void
> +foo (void)
> +{
> + __builtin_memset (dst, 3, 17);
> +}
> +
> +/* { dg-final { scan-assembler-times "vmovups\[ \\t\]+\[^\n\]*%xmm" 1 } } */
> diff --git a/gcc/testsuite/gcc.target/i386/pieces-memset-18.c
> b/gcc/testsuite/gcc.target/i386/pieces-memset-18.c
> new file mode 100644
> index 0000000..a611040
> --- /dev/null
> +++ b/gcc/testsuite/gcc.target/i386/pieces-memset-18.c
> @@ -0,0 +1,12 @@
> +/* { dg-do compile { target { ! ia32 } } } */
> +/* { dg-options "-O2 -mavx512f -mtune=generic" } */
> +
> +extern char *dst;
> +
> +void
> +foo (void)
> +{
> + __builtin_memset (dst, 3, 17);
> +}
> +
> +/* { dg-final { scan-assembler-times "vmovups\[ \\t\]+\[^\n\]*%xmm" 1 } } */
> diff --git a/gcc/testsuite/gcc.target/i386/pieces-memset-19.c
> b/gcc/testsuite/gcc.target/i386/pieces-memset-19.c
> new file mode 100644
> index 0000000..8367654
> --- /dev/null
> +++ b/gcc/testsuite/gcc.target/i386/pieces-memset-19.c
> @@ -0,0 +1,13 @@
> +/* { dg-do compile { target { ! ia32 } } } */
> +/* { dg-options "-O2 -mno-avx -msse2 -mtune=generic" } */
> +
> +extern char *dst;
> +
> +void
> +foo (void)
> +{
> + __builtin_memset (dst, 0, 64);
> +}
> +
> +/* { dg-final { scan-assembler-times "pxor\[ \\t\]+\[^\n\]*%xmm" 1 } } */
> +/* { dg-final { scan-assembler-times "movups\[ \\t\]+\[^\n\]*%xmm" 4 } } */
> diff --git a/gcc/testsuite/gcc.target/i386/pieces-memset-2.c
> b/gcc/testsuite/gcc.target/i386/pieces-memset-2.c
> new file mode 100644
> index 0000000..15f4396
> --- /dev/null
> +++ b/gcc/testsuite/gcc.target/i386/pieces-memset-2.c
> @@ -0,0 +1,12 @@
> +/* { dg-do compile { target { ! ia32 } } } */
> +/* { dg-options "-O2 -mno-avx2 -mavx -mtune=haswell" } */
> +
> +extern char *dst;
> +
> +void
> +foo (int x)
> +{
> + __builtin_memset (dst, x, 64);
> +}
> +
> +/* { dg-final { scan-assembler-times "vmovups\[ \\t\]+\[^\n\]*%xmm" 4 } } */
> diff --git a/gcc/testsuite/gcc.target/i386/pieces-memset-20.c
> b/gcc/testsuite/gcc.target/i386/pieces-memset-20.c
> new file mode 100644
> index 0000000..247936c
> --- /dev/null
> +++ b/gcc/testsuite/gcc.target/i386/pieces-memset-20.c
> @@ -0,0 +1,13 @@
> +/* { dg-do compile { target { ! ia32 } } } */
> +/* { dg-options "-O2 -mno-avx2 -mavx -mtune=haswell" } */
> +
> +extern char *dst;
> +
> +void
> +foo (void)
> +{
> + __builtin_memset (dst, 0, 64);
> +}
> +
> +/* { dg-final { scan-assembler-times "vpxor\[ \\t\]+\[^\n\]*%xmm" 1 } } */
> +/* { dg-final { scan-assembler-times "vmovups\[ \\t\]+\[^\n\]*%xmm" 4 } } */
> diff --git a/gcc/testsuite/gcc.target/i386/pieces-memset-21.c
> b/gcc/testsuite/gcc.target/i386/pieces-memset-21.c
> new file mode 100644
> index 0000000..e4319dc
> --- /dev/null
> +++ b/gcc/testsuite/gcc.target/i386/pieces-memset-21.c
> @@ -0,0 +1,13 @@
> +/* { dg-do compile { target { ! ia32 } } } */
> +/* { dg-options "-O2 -mavx512f -mtune=generic" } */
> +
> +extern char *dst;
> +
> +void
> +foo (void)
> +{
> + __builtin_memset (dst, 0, 66);
> +}
> +
> +/* { dg-final { scan-assembler-times "vpxor\[ \\t\]+\[^\n\]*%xmm" 1 } } */
> +/* { dg-final { scan-assembler-times "vmovups\[ \\t\]+\[^\n\]*%xmm" 4 } } */
> diff --git a/gcc/testsuite/gcc.target/i386/pieces-memset-22.c
> b/gcc/testsuite/gcc.target/i386/pieces-memset-22.c
> new file mode 100644
> index 0000000..e7b6368
> --- /dev/null
> +++ b/gcc/testsuite/gcc.target/i386/pieces-memset-22.c
> @@ -0,0 +1,13 @@
> +/* { dg-do compile { target { ! ia32 } } } */
> +/* { dg-options "-O2 -mno-avx -msse2 -mtune=generic" } */
> +
> +extern char *dst;
> +
> +void
> +foo (void)
> +{
> + __builtin_memset (dst, 0, 33);
> +}
> +
> +/* { dg-final { scan-assembler-times "pxor\[ \\t\]+\[^\n\]*%xmm" 1 } } */
> +/* { dg-final { scan-assembler-times "movups\[ \\t\]+\[^\n\]*%xmm" 2 } } */
> diff --git a/gcc/testsuite/gcc.target/i386/pieces-memset-23.c
> b/gcc/testsuite/gcc.target/i386/pieces-memset-23.c
> new file mode 100644
> index 0000000..703d663
> --- /dev/null
> +++ b/gcc/testsuite/gcc.target/i386/pieces-memset-23.c
> @@ -0,0 +1,13 @@
> +/* { dg-do compile { target { ! ia32 } } } */
> +/* { dg-options "-O2 -mno-avx2 -mavx -mtune=haswell" } */
> +
> +extern char *dst;
> +
> +void
> +foo (void)
> +{
> + __builtin_memset (dst, 0, 33);
> +}
> +
> +/* { dg-final { scan-assembler-times "vpxor\[ \\t\]+\[^\n\]*%xmm" 1 } } */
> +/* { dg-final { scan-assembler-times "vmovups\[ \\t\]+\[^\n\]*%xmm" 2 } } */
> diff --git a/gcc/testsuite/gcc.target/i386/pieces-memset-24.c
> b/gcc/testsuite/gcc.target/i386/pieces-memset-24.c
> new file mode 100644
> index 0000000..aaec8c1
> --- /dev/null
> +++ b/gcc/testsuite/gcc.target/i386/pieces-memset-24.c
> @@ -0,0 +1,13 @@
> +/* { dg-do compile { target { ! ia32 } } } */
> +/* { dg-options "-O2 -mavx512f -mtune=generic" } */
> +
> +extern char *dst;
> +
> +void
> +foo (void)
> +{
> + __builtin_memset (dst, 0, 33);
> +}
> +
> +/* { dg-final { scan-assembler-times "vpxor\[ \\t\]+\[^\n\]*%xmm" 1 } } */
> +/* { dg-final { scan-assembler-times "vmovups\[ \\t\]+\[^\n\]*%xmm" 2 } } */
> diff --git a/gcc/testsuite/gcc.target/i386/pieces-memset-25.c
> b/gcc/testsuite/gcc.target/i386/pieces-memset-25.c
> new file mode 100644
> index 0000000..9c38f86
> --- /dev/null
> +++ b/gcc/testsuite/gcc.target/i386/pieces-memset-25.c
> @@ -0,0 +1,13 @@
> +/* { dg-do compile { target { ! ia32 } } } */
> +/* { dg-options "-O2 -mno-avx -msse2 -mtune=generic" } */
> +
> +extern char *dst;
> +
> +void
> +foo (void)
> +{
> + __builtin_memset (dst, 0, 17);
> +}
> +
> +/* { dg-final { scan-assembler-times "pxor\[ \\t\]+\[^\n\]*%xmm" 1 } } */
> +/* { dg-final { scan-assembler-times "movups\[ \\t\]+\[^\n\]*%xmm" 1 } } */
> diff --git a/gcc/testsuite/gcc.target/i386/pieces-memset-26.c
> b/gcc/testsuite/gcc.target/i386/pieces-memset-26.c
> new file mode 100644
> index 0000000..0040c2b
> --- /dev/null
> +++ b/gcc/testsuite/gcc.target/i386/pieces-memset-26.c
> @@ -0,0 +1,13 @@
> +/* { dg-do compile { target { ! ia32 } } } */
> +/* { dg-options "-O2 -mno-avx2 -mavx -mtune=generic" } */
> +
> +extern char *dst;
> +
> +void
> +foo (void)
> +{
> + __builtin_memset (dst, 0, 17);
> +}
> +
> +/* { dg-final { scan-assembler-times "pxor\[ \\t\]+\[^\n\]*%xmm" 1 } } */
> +/* { dg-final { scan-assembler-times "vmovups\[ \\t\]+\[^\n\]*%xmm" 1 } } */
> diff --git a/gcc/testsuite/gcc.target/i386/pieces-memset-27.c
> b/gcc/testsuite/gcc.target/i386/pieces-memset-27.c
> new file mode 100644
> index 0000000..e742aa3
> --- /dev/null
> +++ b/gcc/testsuite/gcc.target/i386/pieces-memset-27.c
> @@ -0,0 +1,13 @@
> +/* { dg-do compile { target { ! ia32 } } } */
> +/* { dg-options "-O2 -mavx512f -mtune=generic" } */
> +
> +extern char *dst;
> +
> +void
> +foo (void)
> +{
> + __builtin_memset (dst, 0, 17);
> +}
> +
> +/* { dg-final { scan-assembler-times "pxor\[ \\t\]+\[^\n\]*%xmm" 1 } } */
> +/* { dg-final { scan-assembler-times "vmovups\[ \\t\]+\[^\n\]*%xmm" 1 } } */
> diff --git a/gcc/testsuite/gcc.target/i386/pieces-memset-28.c
> b/gcc/testsuite/gcc.target/i386/pieces-memset-28.c
> new file mode 100644
> index 0000000..7d6a8dd
> --- /dev/null
> +++ b/gcc/testsuite/gcc.target/i386/pieces-memset-28.c
> @@ -0,0 +1,13 @@
> +/* { dg-do compile { target { ! ia32 } } } */
> +/* { dg-options "-O2 -mno-avx -msse2 -mtune=generic" } */
> +
> +extern char *dst;
> +
> +void
> +foo (void)
> +{
> + __builtin_memset (dst, -1, 64);
> +}
> +
> +/* { dg-final { scan-assembler-times "pcmpeqd\[ \\t\]+\[^\n\]*%xmm" 1 } } */
> +/* { dg-final { scan-assembler-times "movups\[ \\t\]+\[^\n\]*%xmm" 4 } } */
> diff --git a/gcc/testsuite/gcc.target/i386/pieces-memset-29.c
> b/gcc/testsuite/gcc.target/i386/pieces-memset-29.c
> new file mode 100644
> index 0000000..9847d5e
> --- /dev/null
> +++ b/gcc/testsuite/gcc.target/i386/pieces-memset-29.c
> @@ -0,0 +1,13 @@
> +/* { dg-do compile { target { ! ia32 } } } */
> +/* { dg-options "-O2 -mno-avx2 -mavx -mtune=haswell" } */
> +
> +extern char *dst;
> +
> +void
> +foo (void)
> +{
> + __builtin_memset (dst, -1, 64);
> +}
> +
> +/* { dg-final { scan-assembler-times "vpcmpeqd\[ \\t\]+\[^\n\]*%xmm" 1 } } */
> +/* { dg-final { scan-assembler-times "vmovups\[ \\t\]+\[^\n\]*%xmm" 4 } } */
> diff --git a/gcc/testsuite/gcc.target/i386/pieces-memset-3.c
> b/gcc/testsuite/gcc.target/i386/pieces-memset-3.c
> new file mode 100644
> index 0000000..907ee6d
> --- /dev/null
> +++ b/gcc/testsuite/gcc.target/i386/pieces-memset-3.c
> @@ -0,0 +1,13 @@
> +/* { dg-do compile { target { ! ia32 } } } */
> +/* { dg-options "-O2 -mno-avx512bw -mavx512f -mtune=intel" } */
> +
> +extern char *dst;
> +
> +void
> +foo (int x)
> +{
> + __builtin_memset (dst, x, 66);
> +}
> +
> +/* { dg-final { scan-assembler-times "vpbroadcastb\[ \\t\]+\[^\n\]*%xmm" 1 }
> } */
> +/* { dg-final { scan-assembler-times "vmovdqu\[ \\t\]+\[^\n\]*%xmm" 4 } } */
> diff --git a/gcc/testsuite/gcc.target/i386/pieces-memset-30.c
> b/gcc/testsuite/gcc.target/i386/pieces-memset-30.c
> new file mode 100644
> index 0000000..cff88f7
> --- /dev/null
> +++ b/gcc/testsuite/gcc.target/i386/pieces-memset-30.c
> @@ -0,0 +1,13 @@
> +/* { dg-do compile { target { ! ia32 } } } */
> +/* { dg-options "-O2 -mno-avx512f -mavx2 -mtune=haswell" } */
> +
> +extern char *dst;
> +
> +void
> +foo (void)
> +{
> + __builtin_memset (dst, -1, 64);
> +}
> +
> +/* { dg-final { scan-assembler-times "vpcmpeqd\[ \\t\]+\[^\n\]*%xmm" 1 } } */
> +/* { dg-final { scan-assembler-times "vmovups\[ \\t\]+\[^\n\]*%xmm" 4 } } */
> diff --git a/gcc/testsuite/gcc.target/i386/pieces-memset-31.c
> b/gcc/testsuite/gcc.target/i386/pieces-memset-31.c
> new file mode 100644
> index 0000000..1221f72
> --- /dev/null
> +++ b/gcc/testsuite/gcc.target/i386/pieces-memset-31.c
> @@ -0,0 +1,13 @@
> +/* { dg-do compile { target { ! ia32 } } } */
> +/* { dg-options "-O2 -mavx512f -mtune=generic" } */
> +
> +extern char *dst;
> +
> +void
> +foo (void)
> +{
> + __builtin_memset (dst, -1, 66);
> +}
> +
> +/* { dg-final { scan-assembler-times "vpcmpeqd\[ \\t\]+\[^\n\]*%xmm" 1 } } */
> +/* { dg-final { scan-assembler-times "vmovups\[ \\t\]+\[^\n\]*%xmm" 4 } } */
> diff --git a/gcc/testsuite/gcc.target/i386/pieces-memset-32.c
> b/gcc/testsuite/gcc.target/i386/pieces-memset-32.c
> new file mode 100644
> index 0000000..0a8d0aa
> --- /dev/null
> +++ b/gcc/testsuite/gcc.target/i386/pieces-memset-32.c
> @@ -0,0 +1,13 @@
> +/* { dg-do compile { target { ! ia32 } } } */
> +/* { dg-options "-O2 -mno-avx -msse2 -mtune=generic" } */
> +
> +extern char *dst;
> +
> +void
> +foo (void)
> +{
> + __builtin_memset (dst, -1, 33);
> +}
> +
> +/* { dg-final { scan-assembler-times "pcmpeqd\[ \\t\]+\[^\n\]*%xmm" 1 } } */
> +/* { dg-final { scan-assembler-times "movups\[ \\t\]+\[^\n\]*%xmm" 2 } } */
> diff --git a/gcc/testsuite/gcc.target/i386/pieces-memset-33.c
> b/gcc/testsuite/gcc.target/i386/pieces-memset-33.c
> new file mode 100644
> index 0000000..65d4bfa
> --- /dev/null
> +++ b/gcc/testsuite/gcc.target/i386/pieces-memset-33.c
> @@ -0,0 +1,13 @@
> +/* { dg-do compile { target { ! ia32 } } } */
> +/* { dg-options "-O2 -mno-avx2 -mavx -mtune=haswell" } */
> +
> +extern char *dst;
> +
> +void
> +foo (void)
> +{
> + __builtin_memset (dst, -1, 33);
> +}
> +
> +/* { dg-final { scan-assembler-times "vpcmpeqd\[ \\t\]+\[^\n\]*%xmm" 1 } } */
> +/* { dg-final { scan-assembler-times "vmovups\[ \\t\]+\[^\n\]*%xmm" 2 } } */
> diff --git a/gcc/testsuite/gcc.target/i386/pieces-memset-34.c
> b/gcc/testsuite/gcc.target/i386/pieces-memset-34.c
> new file mode 100644
> index 0000000..e2c1fc8
> --- /dev/null
> +++ b/gcc/testsuite/gcc.target/i386/pieces-memset-34.c
> @@ -0,0 +1,13 @@
> +/* { dg-do compile { target { ! ia32 } } } */
> +/* { dg-options "-O2 -mno-avx512f -mavx2 -mtune=haswell" } */
> +
> +extern char *dst;
> +
> +void
> +foo (void)
> +{
> + __builtin_memset (dst, -1, 33);
> +}
> +
> +/* { dg-final { scan-assembler-times "vpcmpeqd\[ \\t\]+\[^\n\]*%xmm" 1 } } */
> +/* { dg-final { scan-assembler-times "vmovups\[ \\t\]+\[^\n\]*%xmm" 2 } } */
> diff --git a/gcc/testsuite/gcc.target/i386/pieces-memset-35.c
> b/gcc/testsuite/gcc.target/i386/pieces-memset-35.c
> new file mode 100644
> index 0000000..df6dd0d
> --- /dev/null
> +++ b/gcc/testsuite/gcc.target/i386/pieces-memset-35.c
> @@ -0,0 +1,13 @@
> +/* { dg-do compile { target { ! ia32 } } } */
> +/* { dg-options "-O2 -mavx512f -mtune=generic" } */
> +
> +extern char *dst;
> +
> +void
> +foo (void)
> +{
> + __builtin_memset (dst, -1, 34);
> +}
> +
> +/* { dg-final { scan-assembler-times "vpcmpeqd\[ \\t\]+\[^\n\]*%xmm" 1 } } */
> +/* { dg-final { scan-assembler-times "vmovups\[ \\t\]+\[^\n\]*%xmm" 2 } } */
> diff --git a/gcc/testsuite/gcc.target/i386/pieces-memset-36.c
> b/gcc/testsuite/gcc.target/i386/pieces-memset-36.c
> new file mode 100644
> index 0000000..7f9829a
> --- /dev/null
> +++ b/gcc/testsuite/gcc.target/i386/pieces-memset-36.c
> @@ -0,0 +1,13 @@
> +/* { dg-do compile { target { ! ia32 } } } */
> +/* { dg-options "-O2 -mno-avx512f -mavx2 -mtune=generic" } */
> +
> +extern char *dst;
> +
> +void
> +foo (int x)
> +{
> + __builtin_memset (dst, x, 17);
> +}
> +
> +/* { dg-final { scan-assembler-times "vpbroadcastb\[ \\t\]+\[^\n\]*%xmm" 1 }
> } */
> +/* { dg-final { scan-assembler-times "vmovups\[ \\t\]+\[^\n\]*%xmm" 1 } } */
> diff --git a/gcc/testsuite/gcc.target/i386/pieces-memset-37.c
> b/gcc/testsuite/gcc.target/i386/pieces-memset-37.c
> new file mode 100644
> index 0000000..ad8d996
> --- /dev/null
> +++ b/gcc/testsuite/gcc.target/i386/pieces-memset-37.c
> @@ -0,0 +1,13 @@
> +/* { dg-do compile { target { ! ia32 } } } */
> +/* { dg-options "-O2 -mno-avx512f -mavx2 -mtune=haswell" } */
> +
> +extern char *dst;
> +
> +void
> +foo (int x)
> +{
> + __builtin_memset (dst, x, 66);
> +}
> +
> +/* { dg-final { scan-assembler-times "vpbroadcastb\[ \\t\]+\[^\n\]*%xmm" 1 }
> } */
> +/* { dg-final { scan-assembler-times "vmovups\[ \\t\]+\[^\n\]*%xmm" 4 } } */
> diff --git a/gcc/testsuite/gcc.target/i386/pieces-memset-38.c
> b/gcc/testsuite/gcc.target/i386/pieces-memset-38.c
> new file mode 100644
> index 0000000..907ee6d
> --- /dev/null
> +++ b/gcc/testsuite/gcc.target/i386/pieces-memset-38.c
> @@ -0,0 +1,13 @@
> +/* { dg-do compile { target { ! ia32 } } } */
> +/* { dg-options "-O2 -mno-avx512bw -mavx512f -mtune=intel" } */
> +
> +extern char *dst;
> +
> +void
> +foo (int x)
> +{
> + __builtin_memset (dst, x, 66);
> +}
> +
> +/* { dg-final { scan-assembler-times "vpbroadcastb\[ \\t\]+\[^\n\]*%xmm" 1 }
> } */
> +/* { dg-final { scan-assembler-times "vmovdqu\[ \\t\]+\[^\n\]*%xmm" 4 } } */
> diff --git a/gcc/testsuite/gcc.target/i386/pieces-memset-39.c
> b/gcc/testsuite/gcc.target/i386/pieces-memset-39.c
> new file mode 100644
> index 0000000..ab560c9
> --- /dev/null
> +++ b/gcc/testsuite/gcc.target/i386/pieces-memset-39.c
> @@ -0,0 +1,13 @@
> +/* { dg-do compile { target { ! ia32 } } } */
> +/* { dg-options "-O2 -mavx512bw -mtune=generic" } */
> +
> +extern char *dst;
> +
> +void
> +foo (int x)
> +{
> + __builtin_memset (dst, x, 66);
> +}
> +
> +/* { dg-final { scan-assembler-times "vpbroadcastb\[ \\t\]+\[^\n\]*%xmm" 1 }
> } */
> +/* { dg-final { scan-assembler-times "vmovups\[ \\t\]+\[^\n\]*%xmm" 4 } } */
> diff --git a/gcc/testsuite/gcc.target/i386/pieces-memset-4.c
> b/gcc/testsuite/gcc.target/i386/pieces-memset-4.c
> new file mode 100644
> index 0000000..17b0c25
> --- /dev/null
> +++ b/gcc/testsuite/gcc.target/i386/pieces-memset-4.c
> @@ -0,0 +1,12 @@
> +/* { dg-do compile { target { ! ia32 } } } */
> +/* { dg-options "-O2 -mno-avx -msse2 -mtune=generic" } */
> +
> +extern char *dst;
> +
> +void
> +foo (int x)
> +{
> + __builtin_memset (dst, x, 33);
> +}
> +
> +/* { dg-final { scan-assembler-times "movups\[ \\t\]+\[^\n\]*%xmm" 2 } } */
> diff --git a/gcc/testsuite/gcc.target/i386/pieces-memset-40.c
> b/gcc/testsuite/gcc.target/i386/pieces-memset-40.c
> new file mode 100644
> index 0000000..d818f35
> --- /dev/null
> +++ b/gcc/testsuite/gcc.target/i386/pieces-memset-40.c
> @@ -0,0 +1,13 @@
> +/* { dg-do compile { target { ! ia32 } } } */
> +/* { dg-options "-O2 -mno-avx512f -mavx2 -mtune=sandybridge" } */
> +
> +extern char *dst;
> +
> +void
> +foo (int x)
> +{
> + __builtin_memset (dst, x, 66);
> +}
> +
> +/* { dg-final { scan-assembler-times "vpbroadcastb\[ \\t\]+\[^\n\]*%xmm" 1 }
> } */
> +/* { dg-final { scan-assembler-times "vmovups\[ \\t\]+\[^\n\]*%xmm" 4 } } */
> diff --git a/gcc/testsuite/gcc.target/i386/pieces-memset-41.c
> b/gcc/testsuite/gcc.target/i386/pieces-memset-41.c
> new file mode 100644
> index 0000000..5f3fea5
> --- /dev/null
> +++ b/gcc/testsuite/gcc.target/i386/pieces-memset-41.c
> @@ -0,0 +1,12 @@
> +/* { dg-do compile { target { ! ia32 } } } */
> +/* { dg-options "-O2 -mno-avx2 -mavx -mtune=sandybridge" } */
> +
> +extern char *dst;
> +
> +void
> +foo (int x)
> +{
> + __builtin_memset (dst, x, 33);
> +}
> +
> +/* { dg-final { scan-assembler-times "vmovups\[ \\t\]+\[^\n\]*%xmm" 2 } } */
> diff --git a/gcc/testsuite/gcc.target/i386/pieces-memset-42.c
> b/gcc/testsuite/gcc.target/i386/pieces-memset-42.c
> new file mode 100644
> index 0000000..948cf09
> --- /dev/null
> +++ b/gcc/testsuite/gcc.target/i386/pieces-memset-42.c
> @@ -0,0 +1,13 @@
> +/* { dg-do compile { target { ! ia32 } } } */
> +/* { dg-options "-O2 -mno-avx2 -mavx -mtune=sandybridge" } */
> +
> +extern char *dst;
> +
> +void
> +foo (void)
> +{
> + __builtin_memset (dst, 0, 33);
> +}
> +
> +/* { dg-final { scan-assembler-times "vpxor\[ \\t\]+\[^\n\]*%xmm" 1 } } */
> +/* { dg-final { scan-assembler-times "vmovups\[ \\t\]+\[^\n\]*%xmm" 2 } } */
> diff --git a/gcc/testsuite/gcc.target/i386/pieces-memset-43.c
> b/gcc/testsuite/gcc.target/i386/pieces-memset-43.c
> new file mode 100644
> index 0000000..9ab7c53
> --- /dev/null
> +++ b/gcc/testsuite/gcc.target/i386/pieces-memset-43.c
> @@ -0,0 +1,13 @@
> +/* { dg-do compile { target { ! ia32 } } } */
> +/* { dg-options "-O2 -mno-avx2 -mavx -mtune=sandybridge" } */
> +
> +extern char *dst;
> +
> +void
> +foo (void)
> +{
> + __builtin_memset (dst, -1, 33);
> +}
> +
> +/* { dg-final { scan-assembler-times "vpcmpeqd\[ \\t\]+\[^\n\]*%xmm" 1 } } */
> +/* { dg-final { scan-assembler-times "vmovups\[ \\t\]+\[^\n\]*%xmm" 2 } } */
> diff --git a/gcc/testsuite/gcc.target/i386/pieces-memset-44.c
> b/gcc/testsuite/gcc.target/i386/pieces-memset-44.c
> new file mode 100644
> index 0000000..de45cb9
> --- /dev/null
> +++ b/gcc/testsuite/gcc.target/i386/pieces-memset-44.c
> @@ -0,0 +1,13 @@
> +/* { dg-do compile { target { ! ia32 } } } */
> +/* { dg-options "-O2 -mno-avx512f -mavx2 -mtune=sandybridge" } */
> +
> +extern char *dst;
> +
> +void
> +foo (void)
> +{
> + __builtin_memset (dst, -1, 33);
> +}
> +
> +/* { dg-final { scan-assembler-times "vpcmpeqd\[ \\t\]+\[^\n\]*%xmm" 1 } } */
> +/* { dg-final { scan-assembler-times "vmovups\[ \\t\]+\[^\n\]*%xmm" 2 } } */
> diff --git a/gcc/testsuite/gcc.target/i386/pieces-memset-5.c
> b/gcc/testsuite/gcc.target/i386/pieces-memset-5.c
> new file mode 100644
> index 0000000..b47c666
> --- /dev/null
> +++ b/gcc/testsuite/gcc.target/i386/pieces-memset-5.c
> @@ -0,0 +1,12 @@
> +/* { dg-do compile { target { ! ia32 } } } */
> +/* { dg-options "-O2 -mno-avx2 -mavx -mtune=haswell" } */
> +
> +extern char *dst;
> +
> +void
> +foo (int x)
> +{
> + __builtin_memset (dst, x, 33);
> +}
> +
> +/* { dg-final { scan-assembler-times "vmovups\[ \\t\]+\[^\n\]*%xmm" 2 } } */
> diff --git a/gcc/testsuite/gcc.target/i386/pieces-memset-6.c
> b/gcc/testsuite/gcc.target/i386/pieces-memset-6.c
> new file mode 100644
> index 0000000..9535277
> --- /dev/null
> +++ b/gcc/testsuite/gcc.target/i386/pieces-memset-6.c
> @@ -0,0 +1,12 @@
> +/* { dg-do compile { target { ! ia32 } } } */
> +/* { dg-options "-O2 -mavx512f -mtune=intel" } */
> +
> +extern char *dst;
> +
> +void
> +foo (int x)
> +{
> + __builtin_memset (dst, x, 33);
> +}
> +
> +/* { dg-final { scan-assembler-times "vmovdqu\[ \\t\]+\[^\n\]*%xmm" 2 } } */
> diff --git a/gcc/testsuite/gcc.target/i386/pieces-memset-7.c
> b/gcc/testsuite/gcc.target/i386/pieces-memset-7.c
> new file mode 100644
> index 0000000..f0466e8
> --- /dev/null
> +++ b/gcc/testsuite/gcc.target/i386/pieces-memset-7.c
> @@ -0,0 +1,12 @@
> +/* { dg-do compile { target { ! ia32 } } } */
> +/* { dg-options "-O2 -mno-avx -msse2 -mtune=generic" } */
> +
> +extern char *dst;
> +
> +void
> +foo (int x)
> +{
> + __builtin_memset (dst, x, 17);
> +}
> +
> +/* { dg-final { scan-assembler-times "movups\[ \\t\]+\[^\n\]*%xmm" 1 } } */
> diff --git a/gcc/testsuite/gcc.target/i386/pieces-memset-8.c
> b/gcc/testsuite/gcc.target/i386/pieces-memset-8.c
> new file mode 100644
> index 0000000..9147460
> --- /dev/null
> +++ b/gcc/testsuite/gcc.target/i386/pieces-memset-8.c
> @@ -0,0 +1,12 @@
> +/* { dg-do compile { target { ! ia32 } } } */
> +/* { dg-options "-O2 -mno-avx2 -mavx -mtune=generic" } */
> +
> +extern char *dst;
> +
> +void
> +foo (int x)
> +{
> + __builtin_memset (dst, x, 17);
> +}
> +
> +/* { dg-final { scan-assembler-times "vmovups\[ \\t\]+\[^\n\]*%xmm" 1 } } */
> diff --git a/gcc/testsuite/gcc.target/i386/pieces-memset-9.c
> b/gcc/testsuite/gcc.target/i386/pieces-memset-9.c
> new file mode 100644
> index 0000000..cedf8a3
> --- /dev/null
> +++ b/gcc/testsuite/gcc.target/i386/pieces-memset-9.c
> @@ -0,0 +1,12 @@
> +/* { dg-do compile { target { ! ia32 } } } */
> +/* { dg-options "-O2 -mavx512f -mtune=generic" } */
> +
> +extern char *dst;
> +
> +void
> +foo (int x)
> +{
> + __builtin_memset (dst, x, 17);
> +}
> +
> +/* { dg-final { scan-assembler-times "vmovups\[ \\t\]+\[^\n\]*%xmm" 1 } } */
> --
> 2.7.4
>
