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c233f2a4f7
If we instantiate self-referenced anonymous records in foreach and multiclass, the NAME value will point to incorrect record. It's because anonymous name is resolved too early. This patch adds AnonymousNameInit to represent an anonymous record name. When instantiating an anonymous record, it will update the referred name. Differential Revision: https://reviews.llvm.org/D95309
127 lines
2.5 KiB
TableGen
127 lines
2.5 KiB
TableGen
// RUN: llvm-tblgen %s | FileCheck %s
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// XFAIL: vg_leak
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// CHECK: --- Defs ---
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// CHECK: def A0 {
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// CHECK: dag a = (ops A0);
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// CHECK: }
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// CHECK: def B0 {
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// CHECK: dag a = (ops);
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// CHECK: A b = B0;
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// CHECK: }
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// CHECK: def C0 {
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// CHECK: dag q = (ops C0);
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// CHECK: }
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// CHECK: def D0 {
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// CHECK: D d = D0;
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// CHECK: }
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// CHECK: def E0 {
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// CHECK: E e = E0;
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// CHECK: }
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// CHECK: def F0 {
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// CHECK: Fa as_a = F0;
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// CHECK: Fb as_b = F0;
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// CHECK: }
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// CHECK: def F0x {
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// CHECK: Fc as_c = F0;
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// CHECK: }
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// CHECK: def anonymous_0 {
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// CHECK: G g = anonymous_0;
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// CHECK: }
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// CHECK: def anonymous_1 {
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// CHECK: G g = anonymous_1;
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// CHECK: }
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// CHECK: def anonymous_2 {
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// CHECK: G g = anonymous_2;
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// CHECK: }
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// CHECK: def anonymous_5 {
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// CHECK: G g = anonymous_5;
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// CHECK: }
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def ops;
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class A<dag d> {
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dag a = d;
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}
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// This type of self-reference is used in various places defining register
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// classes.
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def A0 : A<(ops A0)>;
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class B<string self> {
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A b = !cast<A>(self);
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}
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// A stronger form of this type of self-reference is used at least in the
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// SystemZ backend to define a record which is a ComplexPattern and an Operand
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// at the same time.
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def B0 : A<(ops)>, B<"B0">;
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// Casting C0 to C by name here is tricky, because it happens while (or rather:
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// before) adding C as a superclass. However, SystemZ uses this pattern.
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class C<string self> {
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dag q = (ops !cast<C>(self));
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}
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def C0 : C<"C0">;
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// Explore some unused corner cases.
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//
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// A self-reference within a class may seem icky, but it unavoidably falls out
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// orthogonally of having forward class declarations and late resolve of self
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// references.
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class D<string self> {
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D d = !cast<D>(self);
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}
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def D0 : D<"D0">;
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class E<E x> {
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E e = x;
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}
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// Putting the !cast directly in the def should work as well: we shouldn't
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// depend on implementation details of when exactly the record is looked up.
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//
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// Note the difference between !cast<E>("E0") and plain E0: the latter wouldn't
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// work here because E0 does not yet have E as a superclass while the template
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// arguments are being parsed.
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def E0 : E<!cast<E>("E0")>;
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// Ensure that records end up with the correct type even when direct self-
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// references are involved.
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class Fa;
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class Fb<Fa x> {
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Fa as_a = x;
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}
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class Fc<Fb x> {
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Fb as_b = x;
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}
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def F0 : Fa, Fb<F0>, Fc<F0>;
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def F0x {
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Fc as_c = F0;
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}
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// anonymous record self-reference in foreach and multiclass
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class G {
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G g = !cast<G>(NAME);
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}
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foreach _ = [1, 2] in
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def : G;
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multiclass H {
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def : G;
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}
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defm : H;
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defm : H;
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