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tree-vect-data-refs.c (vect_shift_permute_load_chain): Extend shift permutations on power of 2 cases. 

gcc/

        * tree-vect-data-refs.c (vect_shift_permute_load_chain): Extend shift
	permutations on power of 2 cases.

gcc/testsuites/

	* gcc.target/i386/pr52252-atom-1.c: New.

From-SVN: r217359
This commit is contained in:
Evgeny Stupachenko 2014-11-11 16:07:52 +00:00 committed by Ilya Enkovich
parent febd3244c4
commit af4c011e67
4 changed files with 67 additions and 28 deletions
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5
gcc/ChangeLog
View File

@ -1,3 +1,8 @@
2014-11-11 Evgeny Stupachenko <evstupac@gmail.com>
* tree-vect-data-refs.c (vect_shift_permute_load_chain): Extend shift
permutations on power of 2 cases.
2014-11-11 Kyrylo Tkachov <kyrylo.tkachov@arm.com>
* config/aarch64/aarch64.h (MACHMODE): Remove 'enum' keyword.

4
gcc/testsuite/ChangeLog
View File

@ -1,3 +1,7 @@
2014-11-11 Evgeny Stupachenko <evstupac@gmail.com>
* gcc.target/i386/pr52252-atom-1.c: New.
2014-11-11 Martin Liska <mliska@suse.cz>
PR ipa/63622

22
gcc/testsuite/gcc.target/i386/pr52252-atom-1.c Normal file
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@ -0,0 +1,22 @@
/* { dg-do compile } */
/* { dg-require-effective-target ssse3 } */
/* { dg-options "-O2 -ftree-vectorize -mssse3 -mtune=slm" } */
#define byte unsigned char
void
pair_mul_sum(byte *in, byte *out, int size)
{
int j;
for(j = 0; j < size; j++)
{
byte a = in[0];
byte b = in[1];
byte c = in[2];
byte d = in[3];
out[0] = (byte)(a * b) + (byte)(b * c) + (byte)(c * d) + (byte)(d * a);
in += 4;
out += 1;
}
}
/* { dg-final { scan-assembler "palignr" } } */

64
gcc/tree-vect-data-refs.c
View File

@ -5371,8 +5371,9 @@ vect_shift_permute_load_chain (vec<tree> dr_chain,
memcpy (result_chain->address (), dr_chain.address (),
length * sizeof (tree));
if (length == 2 && LOOP_VINFO_VECT_FACTOR (loop_vinfo) > 4)
if (exact_log2 (length) != -1 && LOOP_VINFO_VECT_FACTOR (loop_vinfo) > 4)
{
unsigned int j, log_length = exact_log2 (length);
for (i = 0; i < nelt / 2; ++i)
sel[i] = i * 2;
for (i = 0; i < nelt / 2; ++i)
@ -5433,37 +5434,44 @@ vect_shift_permute_load_chain (vec<tree> dr_chain,
select_mask = vect_gen_perm_mask (vectype, sel);
gcc_assert (select_mask != NULL);
first_vect = dr_chain[0];
second_vect = dr_chain[1];
for (i = 0; i < log_length; i++)
{
for (j = 0; j < length; j += 2)
{
first_vect = dr_chain[j];
second_vect = dr_chain[j + 1];
data_ref = make_temp_ssa_name (vectype, NULL, "vect_shuffle2");
perm_stmt = gimple_build_assign_with_ops (VEC_PERM_EXPR, data_ref,
first_vect, first_vect,
perm2_mask1);
vect_finish_stmt_generation (stmt, perm_stmt, gsi);
vect[0] = data_ref;
data_ref = make_temp_ssa_name (vectype, NULL, "vect_shuffle2");
perm_stmt = gimple_build_assign_with_ops (VEC_PERM_EXPR, data_ref,
first_vect, first_vect,
perm2_mask1);
vect_finish_stmt_generation (stmt, perm_stmt, gsi);
vect[0] = data_ref;
data_ref = make_temp_ssa_name (vectype, NULL, "vect_shuffle2");
perm_stmt = gimple_build_assign_with_ops (VEC_PERM_EXPR, data_ref,
second_vect, second_vect,
perm2_mask2);
vect_finish_stmt_generation (stmt, perm_stmt, gsi);
vect[1] = data_ref;
data_ref = make_temp_ssa_name (vectype, NULL, "vect_shuffle2");
perm_stmt = gimple_build_assign_with_ops (VEC_PERM_EXPR, data_ref,
second_vect, second_vect,
perm2_mask2);
vect_finish_stmt_generation (stmt, perm_stmt, gsi);
vect[1] = data_ref;
data_ref = make_temp_ssa_name (vectype, NULL, "vect_shift");
perm_stmt = gimple_build_assign_with_ops (VEC_PERM_EXPR, data_ref,
vect[0], vect[1],
shift1_mask);
vect_finish_stmt_generation (stmt, perm_stmt, gsi);
(*result_chain)[1] = data_ref;
data_ref = make_temp_ssa_name (vectype, NULL, "vect_select");
perm_stmt = gimple_build_assign_with_ops (VEC_PERM_EXPR, data_ref,
vect[0], vect[1],
select_mask);
vect_finish_stmt_generation (stmt, perm_stmt, gsi);
(*result_chain)[0] = data_ref;
data_ref = make_temp_ssa_name (vectype, NULL, "vect_shift");
perm_stmt = gimple_build_assign_with_ops (VEC_PERM_EXPR, data_ref,
vect[0], vect[1],
shift1_mask);
vect_finish_stmt_generation (stmt, perm_stmt, gsi);
(*result_chain)[j/2 + length/2] = data_ref;
data_ref = make_temp_ssa_name (vectype, NULL, "vect_select");
perm_stmt = gimple_build_assign_with_ops (VEC_PERM_EXPR, data_ref,
vect[0], vect[1],
select_mask);
vect_finish_stmt_generation (stmt, perm_stmt, gsi);
(*result_chain)[j/2] = data_ref;
}
memcpy (dr_chain.address (), result_chain->address (),
length * sizeof (tree));
}
return true;
}
if (length == 3 && LOOP_VINFO_VECT_FACTOR (loop_vinfo) > 2)