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7201026: add vector for shift count

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Add generation of vectors for scalar shift count.

Reviewed-by: roland, twisti, dlong
This commit is contained in:
Vladimir Kozlov 2012-10-02 12:25:13 -07:00
parent 59b8489a0c
commit e8332c76e9
9 changed files with 178 additions and 100 deletions
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7
hotspot/src/share/vm/opto/superword.cpp
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@ -1436,10 +1436,9 @@ Node* SuperWord::vector_opd(Node_List* p, int opd_idx) {
return opd; // input is matching vector
}
if ((opd_idx == 2) && VectorNode::is_shift(p0)) {
// No vector is needed for shift count.
// Vector instructions do not mask shift count, do it here.
Compile* C = _phase->C;
Node* cnt = opd;
// Vector instructions do not mask shift count, do it here.
juint mask = (p0->bottom_type() == TypeInt::INT) ? (BitsPerInt - 1) : (BitsPerLong - 1);
const TypeInt* t = opd->find_int_type();
if (t != NULL && t->is_con()) {
@ -1456,8 +1455,8 @@ Node* SuperWord::vector_opd(Node_List* p, int opd_idx) {
_phase->set_ctrl(cnt, _phase->get_ctrl(opd));
}
assert(opd->bottom_type()->isa_int(), "int type only");
// Move non constant shift count into XMM register.
cnt = new (C) MoveI2FNode(cnt);
// Move non constant shift count into vector register.
cnt = VectorNode::shift_count(C, p0, cnt, vlen, velt_basic_type(p0));
}
if (cnt != opd) {
_igvn.register_new_node_with_optimizer(cnt);