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/* { dg-do compile } */
/* { dg-options "-O3 -fdump-tree-forwprop1-details -Wno-psabi" } */
/* { dg-additional-options "-msse2" { target i?86-*-* x86_64-*-* } } */
typedef int vec __attribute__((vector_size (4 * sizeof (int))));
void f1 (vec *p_v_in_1, vec *p_v_in_2, vec *p_v_out_1, vec *p_v_out_2)
{
vec sel0 = { 0, 2, 0, 2 };
vec sel1 = { 1, 3, 1, 3 };
vec sel = { 0, 1, 6, 7 };
vec v_1, v_2, v_x, v_y, v_out_1, v_out_2;
vec v_in_1 = *p_v_in_1;
vec v_in_2;
/* First vec perm sequence. */
v_1 = __builtin_shuffle (v_in_1, v_in_1, sel0);
v_2 = __builtin_shuffle (v_in_1, v_in_1, sel1);
v_x = v_1 + v_2;
v_y = v_1 - v_2;
v_out_1 = __builtin_shuffle (v_x, v_y, sel);
/* Won't blend because v_in_2 is defined after v_1 above. */
v_in_2 = *p_v_in_2;
/* Second vec perm sequence. */
v_1 = __builtin_shuffle (v_in_2, v_in_2, sel0);
v_2 = __builtin_shuffle (v_in_2, v_in_2, sel1);
v_x = v_1 + v_2;
v_y = v_1 - v_2;
v_out_2 = __builtin_shuffle (v_x, v_y, sel);
*p_v_out_1 = v_out_1;
*p_v_out_2 = v_out_2;
}
void f2 (vec *p_v_in_1, vec *p_v_in_2, vec *p_v_out_1, vec *p_v_out_2)
{
vec sel0 = { 0, 2, 0, 2 };
vec sel1 = { 1, 3, 1, 3 };
vec sel = { 0, 1, 6, 7 };
vec v_1, v_2, v_x, v_y, v_out_1, v_out_2;
vec v_in_1 = *p_v_in_1;
vec v_in_2 = *p_v_in_2;
/* First vec perm sequence. */
v_1 = __builtin_shuffle (v_in_1, v_in_1, sel0);
v_2 = __builtin_shuffle (v_in_1, v_in_1, sel1);
v_x = v_1 + v_2;
v_y = v_1 - v_2;
v_out_1 = __builtin_shuffle (v_x, v_y, sel);
/* Won't blend because of this store between the sequences. */
*p_v_out_1 = v_out_1;
/* Second vec perm sequence. */
v_1 = __builtin_shuffle (v_in_2, v_in_2, sel0);
v_2 = __builtin_shuffle (v_in_2, v_in_2, sel1);
v_x = v_1 + v_2;
v_y = v_1 - v_2;
v_out_2 = __builtin_shuffle (v_x, v_y, sel);
*p_v_out_2 = v_out_2;
}
void f3 (vec *p_v_in_1, vec *p_v_in_2, vec *p_v_out_1, vec *p_v_out_2)
{
vec sel0 = { 0, 2, 0, 2 };
vec sel1 = { 1, 3, 1, 3 };
vec sel = { 0, 1, 6, 7 };
vec v_1, v_2, v_x, v_y, v_out_1, v_out_2;
vec v_in_1 = *p_v_in_1;
vec v_in_2 = *p_v_in_2;
/* First vec perm sequence. */
v_1 = __builtin_shuffle (v_in_1, v_in_1, sel0);
v_2 = __builtin_shuffle (v_in_1, v_in_1, sel1);
v_x = v_1 + v_2;
v_y = v_1 - v_2;
v_out_1 = __builtin_shuffle (v_x, v_y, sel);
/* Second vec perm sequence. */
v_1 = __builtin_shuffle (v_in_2, v_in_2, sel0);
v_2 = __builtin_shuffle (v_in_2, v_in_2, sel1);
v_x = v_1 + v_2;
/* Won't blend because v_2 is RHS1 here. */
v_y = v_2 - v_1;
v_out_2 = __builtin_shuffle (v_x, v_y, sel);
*p_v_out_1 = v_out_1;
*p_v_out_2 = v_out_2;
}
extern vec foo (vec v);
void f4 (vec *p_v_in_1, vec *p_v_out_1, vec *p_v_out_2)
{
vec sel0 = { 0, 2, 0, 2 };
vec sel1 = { 1, 3, 1, 3 };
vec sel = { 0, 1, 6, 7 };
vec v_1, v_2, v_x, v_y, v_out_1, v_out_2;
vec v_in_1 = *p_v_in_1;
vec v_in_2;
/* First vec perm sequence. */
v_1 = __builtin_shuffle (v_in_1, v_in_1, sel0);
v_2 = __builtin_shuffle (v_in_1, v_in_1, sel1);
v_x = v_1 + v_2;
v_y = v_1 - v_2;
v_out_1 = __builtin_shuffle (v_x, v_y, sel);
/* Won't blend because of dependency. */
v_in_2 = foo (v_out_1);
/* Second vec perm sequence. */
v_1 = __builtin_shuffle (v_in_2, v_in_2, sel0);
v_2 = __builtin_shuffle (v_in_2, v_in_2, sel1);
v_x = v_1 + v_2;
v_y = v_1 - v_2;
v_out_2 = __builtin_shuffle (v_x, v_y, sel);
*p_v_out_1 = v_out_1;
*p_v_out_2 = v_out_2;
}
/* { dg-final { scan-tree-dump-not "Vec perm simplify sequences have been merged" "forwprop1" } } */
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