TheRock/compiler/amd-llvm/mlir/test/mlir-pdll/Parser/pattern-failure.pdll

// RUN: not mlir-pdll %s -split-input-file 2>&1 | FileCheck %s

// CHECK: expected `{` or `=>` to start pattern body
Pattern }

// -----

// CHECK: :6:9: error: `Foo` has already been defined
// CHECK: :5:9: note: see previous definition here
Pattern Foo { erase root: Op; }
Pattern Foo { erase root: Op; }

// -----

// CHECK: `return` statements are only permitted within a `Constraint` or `Rewrite` body
Pattern {
  return _: Value;
}

// -----

// CHECK: expected Pattern body to terminate with an operation rewrite statement
Pattern {
  let value: Value;
}

// -----

// CHECK: Pattern body was terminated by an operation rewrite statement, but found trailing statements
Pattern {
  erase root: Op;
  let value: Value;
}

// -----

// CHECK: expected Pattern lambda body to contain a single operation rewrite statement, such as `erase`, `replace`, or `rewrite`
Pattern => op<>;

// -----

Rewrite SomeRewrite();

// CHECK: unable to invoke `Rewrite` within a match section
Pattern {
  SomeRewrite();
}

// -----

//===----------------------------------------------------------------------===//
// Metadata
//===----------------------------------------------------------------------===//

// CHECK: expected pattern metadata identifier
Pattern with {}

// -----

// CHECK: unknown pattern metadata
Pattern with unknown {}

// -----

// CHECK: expected `(` before pattern benefit
Pattern with benefit) {}

// -----

// CHECK: expected integral pattern benefit
Pattern with benefit(foo) {}

// -----

// CHECK: expected pattern benefit to fit within a 16-bit integer
Pattern with benefit(65536) {}

// -----

// CHECK: expected `)` after pattern benefit
Pattern with benefit(1( {}

// -----

// CHECK: pattern benefit has already been specified
// CHECK: see previous definition here
Pattern with benefit(1), benefit(1) {}

// -----

// CHECK: pattern recursion metadata has already been specified
// CHECK: see previous definition here
Pattern with recursion, recursion {}