d968b173d3
Add a warning to TableGen for unused template arguments in classes and
multiclasses, for example:
multiclass Foo<int x> {
def bar;
}
$ llvm-tblgen foo.td
foo.td:1:20: warning: unused template argument: Foo::x
multiclass Foo<int x> {
^
A flag '--no-warn-on-unused-template-args' is added to disable the
warning. The warning is disabled for LLVM and sub-projects if
'LLVM_ENABLE_WARNINGS=OFF'.
Reviewed By: RKSimon
Differential Revision: https://reviews.llvm.org/D109359
45 lines
871 B
TableGen
45 lines
871 B
TableGen
// RUN: llvm-tblgen --no-warn-on-unused-template-args %s | FileCheck %s
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// XFAIL: vg_leak
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class A<int k, bits<2> x = 1> {
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int K = k;
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bits<2> Bits = x;
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}
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// CHECK: def a1
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// CHECK: Bits = { 0, 1 }
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def a1 : A<12>;
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// CHECK: def a2
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// CHECK: Bits = { 1, 0 }
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def a2 : A<13, 2>;
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// Here was the bug: X.Bits would get resolved to the default a1.Bits while
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// resolving the first template argument. When the second template argument
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// was processed, X would be set correctly, but Bits retained the default
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// value.
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class B<int k, A x = a1> {
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A X = x;
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bits<2> Bits = X.Bits;
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}
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// CHECK: def b1
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// CHECK: Bits = { 0, 1 }
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def b1 : B<27>;
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// CHECK: def b2
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// CHECK: Bits = { 1, 0 }
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def b2 : B<28, a2>;
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class C<A x = a1> {
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bits<2> Bits = x.Bits;
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}
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// CHECK: def c1
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// CHECK: Bits = { 0, 1 }
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def c1 : C;
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// CHECK: def c2
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// CHECK: Bits = { 1, 0 }
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def c2 : C<a2>;
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