From: Evgeny Stupachenko Date: Tue, 11 Nov 2014 16:07:52 +0000 (+0000) Subject: tree-vect-data-refs.c (vect_shift_permute_load_chain): Extend shift permutations... X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=af4c011e674423cc8d619d04a91655626380ef28;p=gcc.git 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 --- diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 432a9fefcf5..6baafa066eb 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +2014-11-11 Evgeny Stupachenko + + * tree-vect-data-refs.c (vect_shift_permute_load_chain): Extend shift + permutations on power of 2 cases. + 2014-11-11 Kyrylo Tkachov * config/aarch64/aarch64.h (MACHMODE): Remove 'enum' keyword. diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index c3f633a985a..3ffd69ae1fc 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,3 +1,7 @@ +2014-11-11 Evgeny Stupachenko + + * gcc.target/i386/pr52252-atom-1.c: New. + 2014-11-11 Martin Liska PR ipa/63622 diff --git a/gcc/testsuite/gcc.target/i386/pr52252-atom-1.c b/gcc/testsuite/gcc.target/i386/pr52252-atom-1.c new file mode 100644 index 00000000000..1fbd258ac72 --- /dev/null +++ b/gcc/testsuite/gcc.target/i386/pr52252-atom-1.c @@ -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" } } */ diff --git a/gcc/tree-vect-data-refs.c b/gcc/tree-vect-data-refs.c index c49b47c7cc4..d07885fd143 100644 --- a/gcc/tree-vect-data-refs.c +++ b/gcc/tree-vect-data-refs.c @@ -5371,8 +5371,9 @@ vect_shift_permute_load_chain (vec 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 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]; - - 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; + 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, - 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, + 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_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_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_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)