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74a4d54f41
Summary: These are cases of self-references that exist today in practice. Let's add tests for them to avoid regressions. The self-references in PPCInstrInfo.td can be expressed in a simpler way. Allowing this type of self-reference while at the same time consistently doing late-resolve even for self-references is problematic because there are references to fields that aren't in any class. Since there's no need for this type of self-reference anyway, let's just remove it. Change-Id: I914e0b3e1ae7adae33855fac409b536879bc3f62 Reviewers: arsenm, craig.topper, tra, MartinO Subscribers: nemanjai, wdng, kbarton, llvm-commits Differential Revision: https://reviews.llvm.org/D44474 llvm-svn: 327848
45 lines
921 B
TableGen
45 lines
921 B
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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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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