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llvm-mirror/test/TableGen/AnonDefinitionOnDemand.td
Nicolai Haehnle d999c84688 TableGen: Delay instantiating inline anonymous records
Summary:
Only instantiate anonymous records once all variable references in template
arguments have been resolved. This allows patterns like the new test case,
which in practice can appear in expressions like:

  class IntrinsicTypeProfile<list<LLVMType> ty, int shift> {
    list<LLVMType> types =
      !listconcat(ty, [llvm_any_ty, LLVMMatchType<shift>]);
  }

  class FooIntrinsic<IntrinsicTypeProfile P, ...>
    : Intrinsic<..., P.types, ...>;

Without this change, the anonymous LLVMMatchType instantiation would
never get resolved.

Another consequence of this change is that anonymous inline
instantiations are uniqued via the folding set of the newly introduced
VarDefInit.

Change-Id: I7a7041a20e297cf98c9109b28d85e64e176c932a

Reviewers: arsenm, craig.topper, tra, MartinO

Subscribers: wdng, llvm-commits

Differential Revision: https://reviews.llvm.org/D43756

llvm-svn: 326788
2018-03-06 13:49:01 +00:00

38 lines
596 B
TableGen

// RUN: llvm-tblgen %s | FileCheck %s
// XFAIL: vg_leak
// CHECK: --- Defs ---
// CHECK: def X {
// CHECK: foo Y = anonymous_0;
// CHECK: }
// CHECK: def ZD {
// CHECK: foo Z = anonymous_1;
// CHECK: }
// CHECK: def anonymous_0 {
// CHECK: int THEVAL = 1;
// CHECK: }
// CHECK: def anonymous_1 {
// CHECK: int THEVAL = 42;
// CHECK: }
class foo<int X> { int THEVAL = X; }
def foo_imp : foo<1>;
def x {
foo Y = foo_imp; // This works.
}
def X {
foo Y = foo<1>; // This should work too, synthesizing a new foo<1>.
}
class Z<int X> {
foo Z = foo<X>;
}
def ZD : Z<42>;