Expr* PrimInliner::tryTypeCheck() {
// Check if we have enough type information to prove that the primitive is going to fail;
// if so, directly compile failure block (important for mixed-mode arithmetic).
// Returns the failure result if the primitive call has been proven
// to fail; returns NULL otherwise.
// Should extend code to do general type compatibility test (including MergeExprs, e.g. for
// booleans) -- fix this later. -Urs 11/95
int num = number_of_parameters();
for (int i = 0; i < num; i++) {
Expr* a = parameter(i);
if (a->hasKlass()) {
Expr* primArgType = _pdesc->parameter_klass(i, a->preg(), NULL);
if (primArgType && primArgType->hasKlass() && (a->klass() != primArgType->klass())) {
// types differ -> primitive must fail
return primitiveFailure(failureSymbolForArg(i));
}
}
}
return NULL;
}
Expr* PrimInliner::obj_class(bool has_receiver) {
assert_no_failure_block();
if (has_receiver) assert_receiver();
Expr* obj = parameter(0);
if (obj->hasKlass()) {
// constant-fold it
klassOop k = obj->klass();
return new ConstantExpr(k, new_ConstPReg(_scope, k), NULL);
} else {
SAPReg* resPReg = new SAPReg(_scope);
InlinedPrimitiveNode* n = NodeFactory::new_InlinedPrimitiveNode(
InlinedPrimitiveNode::obj_klass, resPReg, NULL, obj->preg()
);
_gen->append(n);
// don't know exactly what it is - just use PIC info
return new UnknownExpr(resPReg, n);
}
}