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| author | Richard Henderson <rth@redhat.com> | 2011-12-10 12:42:55 -0800 |
|---|---|---|
| committer | Richard Henderson <rth@gcc.gnu.org> | 2011-12-10 12:42:55 -0800 |
| commit | a7de2c2a71940a25408c1320498c1c1ca2472313 (patch) | |
| tree | 914df35ba46de67da8ba88eabaff049134debfe9 /gcc/genmodes.c | |
| parent | be94c03412ea6b8613033c2e0fd07e628ef7b4af (diff) | |
| download | gcc-a7de2c2a71940a25408c1320498c1c1ca2472313.tar.gz | |
Let GET_MODE_2XWIDER_MODE find a double-width vector mode.
* genmodes.c (struct mode_data): Remove wider_2x member.
(blank_mode): Adjust initializer.
(calc_wider_mode): Use XALLOCAVEC.
(emit_move_wider): Select double-width same-element vectors for
2xwider vectors.
* machmode.h (GET_MODE_2XWIDER_MODE): Update documentation.
* config/i386/i386.c (doublesize_vector_mode): Remove.
(expand_vselect_vconcat): Use GET_MODE_2XWIDER_MODE instead.
From-SVN: r182191
Diffstat (limited to 'gcc/genmodes.c')
| -rw-r--r-- | gcc/genmodes.c | 22 |
1 files changed, 17 insertions, 5 deletions
diff --git a/gcc/genmodes.c b/gcc/genmodes.c index dae7e38ebdb..8b6f5bce96b 100644 --- a/gcc/genmodes.c +++ b/gcc/genmodes.c @@ -63,7 +63,6 @@ struct mode_data struct mode_data *component; /* mode of components */ struct mode_data *wider; /* next wider mode */ - struct mode_data *wider_2x; /* 2x wider mode */ struct mode_data *contained; /* Pointer to list of modes that have this mode as a component. */ @@ -83,7 +82,7 @@ static struct mode_data *void_mode; static const struct mode_data blank_mode = { 0, "<unknown>", MAX_MODE_CLASS, -1U, -1U, -1U, -1U, - 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, "<unknown>", 0, 0, 0, 0 }; @@ -790,7 +789,7 @@ calc_wider_mode (void) /* Allocate max_n_modes + 1 entries to leave room for the extra null pointer assigned after the qsort call below. */ - sortbuf = (struct mode_data **) alloca ((max_n_modes + 1) * sizeof (struct mode_data *)); + sortbuf = XALLOCAVEC (struct mode_data *, max_n_modes + 1); for (c = 0; c < MAX_MODE_CLASS; c++) { @@ -804,7 +803,6 @@ calc_wider_mode (void) for (prev = 0, m = modes[c]; m; m = next) { m->wider = void_mode; - m->wider_2x = void_mode; /* this is nreverse */ next = m->next; @@ -827,7 +825,6 @@ calc_wider_mode (void) for (j = 0; j < i; j++) sortbuf[j]->next = sortbuf[j]->wider = sortbuf[j + 1]; - modes[c] = sortbuf[0]; } } @@ -1062,6 +1059,21 @@ emit_mode_wider (void) continue; } + /* For vectors we want twice the number of components, + with the same element type. */ + if (m->cl == MODE_VECTOR_INT + || m->cl == MODE_VECTOR_FLOAT + || m->cl == MODE_VECTOR_FRACT + || m->cl == MODE_VECTOR_UFRACT + || m->cl == MODE_VECTOR_ACCUM + || m->cl == MODE_VECTOR_UACCUM) + { + if (m2->ncomponents != 2 * m->ncomponents) + continue; + if (m->component != m2->component) + continue; + } + break; } if (m2 == void_mode) |