https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104059
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
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Target|x86_64-*-* i?86-*-* |x86_64-*-* i?86-*-*
|aarch64*-*-* |
--- Comment #4 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
(In reply to Andrew Pinski from comment #3)
> Figures. I might take a look tomorrow.
Before in GCC 11 for gimple level:
vect_sum_26.13_34 = VIEW_CONVERT_EXPR<vector(4) int>(vect__7.9_48);
_32 = (vector(4) unsigned int) vect_sum_26.13_34;
_31 = VEC_PERM_EXPR <_32, { 0, 0, 0, 0 }, { 2, 3, 4, 5 }>;
_25 = _31 + _32;
_19 = VEC_PERM_EXPR <_25, { 0, 0, 0, 0 }, { 1, 2, 3, 4 }>;
_18 = _19 + _25;
stmp_sum_26.14_17 = BIT_FIELD_REF <_18, 32, 0>;
_44 = VEC_PERM_EXPR <vect__7.9_48, { 0, 0, 0, 0 }, { 2, 3, 4, 5 }>;
_38 = _44 + vect__7.9_48;
_37 = VEC_PERM_EXPR <_38, { 0, 0, 0, 0 }, { 1, 2, 3, 4 }>;
_36 = _37 + _38;
stmp__9.12_35 = BIT_FIELD_REF <_36, 32, 0>;
_20 = stmp_sum_26.14_17 & 65535;
_10 = (unsigned int) _20;
_12 = stmp__9.12_35 >> 16;
_13 = _10 + _12;
_14 = _13 >> 1;
_23 = (int) _14;
After on the trunk:
_43 = VEC_PERM_EXPR <vect__7.11_47, { 0, 0, 0, 0 }, { 2, 3, 4, 5 }>;
_42 = _43 + vect__7.11_47;
_41 = VEC_PERM_EXPR <_42, { 0, 0, 0, 0 }, { 1, 2, 3, 4 }>;
_34 = _41 + _42;
stmp__9.14_33 = BIT_FIELD_REF <_34, 32, 0>;
_37 = stmp__9.14_33 & 65535;
_12 = stmp__9.14_33 >> 16;
_13 = _12 + _37;
_14 = _13 >> 1;
_23 = (int) _14;
As you can see the number of adds and PERM is better. I don't see anything that
should be done on the gimple level, the gimple level looks decent now.
Basically what was _10 previously is now _37 and all of the extra casts were
removed.
