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| author | Richard Sandiford <richard.sandiford@linaro.org> | 2018-01-13 17:57:25 +0000 |
|---|---|---|
| committer | Richard Sandiford <rsandifo@gcc.gnu.org> | 2018-01-13 17:57:25 +0000 |
| commit | 695da53448dcc40e1e5db83bcf14d16217ffbd4a (patch) | |
| tree | 653ae8366d4a3351466cfc904a7623b71b73a233 /gcc/tree-vect-data-refs.c | |
| parent | 779fed5fdb6098e67213a82dfd27f5b326a75e88 (diff) | |
| download | gcc-695da53448dcc40e1e5db83bcf14d16217ffbd4a.zip gcc-695da53448dcc40e1e5db83bcf14d16217ffbd4a.tar.gz gcc-695da53448dcc40e1e5db83bcf14d16217ffbd4a.tar.bz2 | |
Give the target more control over ARRAY_TYPE modes
So far we've used integer modes for LD[234] and ST[234] arrays.
That doesn't scale well to SVE, since the sizes aren't fixed at
compile time (and even if they were, we wouldn't want integers
to be so wide).
This patch lets the target use double-, triple- and quadruple-length
vectors instead.
2018-01-13 Richard Sandiford <richard.sandiford@linaro.org>
Alan Hayward <alan.hayward@arm.com>
David Sherwood <david.sherwood@arm.com>
gcc/
* target.def (array_mode): New target hook.
* doc/tm.texi.in (TARGET_ARRAY_MODE): New hook.
* doc/tm.texi: Regenerate.
* hooks.h (hook_optmode_mode_uhwi_none): Declare.
* hooks.c (hook_optmode_mode_uhwi_none): New function.
* tree-vect-data-refs.c (vect_lanes_optab_supported_p): Use
targetm.array_mode.
* stor-layout.c (mode_for_array): Likewise. Support polynomial
type sizes.
Co-Authored-By: Alan Hayward <alan.hayward@arm.com>
Co-Authored-By: David Sherwood <david.sherwood@arm.com>
From-SVN: r256617
Diffstat (limited to 'gcc/tree-vect-data-refs.c')
| -rw-r--r-- | gcc/tree-vect-data-refs.c | 23 |
1 files changed, 13 insertions, 10 deletions
diff --git a/gcc/tree-vect-data-refs.c b/gcc/tree-vect-data-refs.c index eb82594..759c1e3 100644 --- a/gcc/tree-vect-data-refs.c +++ b/gcc/tree-vect-data-refs.c @@ -61,20 +61,23 @@ static bool vect_lanes_optab_supported_p (const char *name, convert_optab optab, tree vectype, unsigned HOST_WIDE_INT count) { - machine_mode mode; - scalar_int_mode array_mode; + machine_mode mode, array_mode; bool limit_p; mode = TYPE_MODE (vectype); - limit_p = !targetm.array_mode_supported_p (mode, count); - if (!int_mode_for_size (count * GET_MODE_BITSIZE (mode), - limit_p).exists (&array_mode)) + if (!targetm.array_mode (mode, count).exists (&array_mode)) { - if (dump_enabled_p ()) - dump_printf_loc (MSG_MISSED_OPTIMIZATION, vect_location, - "no array mode for %s[" HOST_WIDE_INT_PRINT_DEC "]\n", - GET_MODE_NAME (mode), count); - return false; + poly_uint64 bits = count * GET_MODE_BITSIZE (mode); + limit_p = !targetm.array_mode_supported_p (mode, count); + if (!int_mode_for_size (bits, limit_p).exists (&array_mode)) + { + if (dump_enabled_p ()) + dump_printf_loc (MSG_MISSED_OPTIMIZATION, vect_location, + "no array mode for %s[" + HOST_WIDE_INT_PRINT_DEC "]\n", + GET_MODE_NAME (mode), count); + return false; + } } if (convert_optab_handler (optab, array_mode, mode) == CODE_FOR_nothing) |