forked from OSchip/llvm-project
99 lines
2.0 KiB
TableGen
99 lines
2.0 KiB
TableGen
// RUN: llvm-tblgen %s | FileCheck %s
|
|
// XFAIL: vg_leak
|
|
|
|
// CHECK: --- Defs ---
|
|
|
|
// CHECK: def A0 {
|
|
// CHECK: dag a = (ops A0);
|
|
// CHECK: }
|
|
|
|
// CHECK: def B0 {
|
|
// CHECK: dag a = (ops);
|
|
// CHECK: A b = B0;
|
|
// CHECK: }
|
|
|
|
// CHECK: def C0 {
|
|
// CHECK: dag q = (ops C0);
|
|
// CHECK: }
|
|
|
|
// CHECK: def D0 {
|
|
// CHECK: D d = D0;
|
|
// CHECK: }
|
|
|
|
// CHECK: def E0 {
|
|
// CHECK: E e = E0;
|
|
// CHECK: }
|
|
|
|
// CHECK: def F0 {
|
|
// CHECK: Fa as_a = F0;
|
|
// CHECK: Fb as_b = F0;
|
|
// CHECK: }
|
|
// CHECK: def F0x {
|
|
// CHECK: Fc as_c = F0;
|
|
// CHECK: }
|
|
|
|
def ops;
|
|
|
|
class A<dag d> {
|
|
dag a = d;
|
|
}
|
|
|
|
// This type of self-reference is used in various places defining register
|
|
// classes.
|
|
def A0 : A<(ops A0)>;
|
|
|
|
class B<string self> {
|
|
A b = !cast<A>(self);
|
|
}
|
|
|
|
// A stronger form of this type of self-reference is used at least in the
|
|
// SystemZ backend to define a record which is a ComplexPattern and an Operand
|
|
// at the same time.
|
|
def B0 : A<(ops)>, B<"B0">;
|
|
|
|
// Casting C0 to C by name here is tricky, because it happens while (or rather:
|
|
// before) adding C as a superclass. However, SystemZ uses this pattern.
|
|
class C<string self> {
|
|
dag q = (ops !cast<C>(self));
|
|
}
|
|
|
|
def C0 : C<"C0">;
|
|
|
|
// Explore some unused corner cases.
|
|
//
|
|
// A self-reference within a class may seem icky, but it unavoidably falls out
|
|
// orthogonally of having forward class declarations and late resolve of self
|
|
// references.
|
|
class D<string self> {
|
|
D d = !cast<D>(self);
|
|
}
|
|
|
|
def D0 : D<"D0">;
|
|
|
|
class E<E x> {
|
|
E e = x;
|
|
}
|
|
|
|
// Putting the !cast directly in the def should work as well: we shouldn't
|
|
// depend on implementation details of when exactly the record is looked up.
|
|
//
|
|
// Note the difference between !cast<E>("E0") and plain E0: the latter wouldn't
|
|
// work here because E0 does not yet have E as a superclass while the template
|
|
// arguments are being parsed.
|
|
def E0 : E<!cast<E>("E0")>;
|
|
|
|
// Ensure that records end up with the correct type even when direct self-
|
|
// references are involved.
|
|
class Fa;
|
|
class Fb<Fa x> {
|
|
Fa as_a = x;
|
|
}
|
|
class Fc<Fb x> {
|
|
Fb as_b = x;
|
|
}
|
|
|
|
def F0 : Fa, Fb<F0>, Fc<F0>;
|
|
def F0x {
|
|
Fc as_c = F0;
|
|
}
|