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
26 lines
741 B
TableGen
26 lines
741 B
TableGen
// RUN: llvm-tblgen %s 2>&1 | FileCheck %s
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// RUN: llvm-tblgen --no-warn-on-unused-template-args %s 2>&1 | FileCheck %s --check-prefix=CHECK-DISABLED
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class UnusedClassArg<int foo> {}
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// CHECK: warning: unused template argument: UnusedClassArg:foo
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// CHECK-NEXT: class UnusedClassArg<int foo> {}
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// CHECK-NEXT: ^
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multiclass UnusedMultiClassArg<int foo> {
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def bar;
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}
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defm : UnusedMultiClassArg<1>;
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// CHECK: warning: unused template argument: UnusedMultiClassArg::foo
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// CHECK-NEXT: multiclass UnusedMultiClassArg<int foo> {
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// CHECK-NEXT: ^
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class NoWarning<int b> {
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int a = b;
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}
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// CHECK-NOT: warning: unused template argument: NoWarning:b
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// CHECK-DISABLED-NOT: warning
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