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// RUN: mlir-opt %s -split-input-file -verify-diagnostics
// Check different error cases.
// -----
#hello_world = (i, j) -> ((), j) // expected-error {{no expression inside parentheses}}
// -----
#hello_world = (i, j) -> (->, j) // expected-error {{expected affine expression}}
// -----
#hello_world = (i, j) -> (:) // expected-error {{expected affine expression}}
// -----
#hello_world = (i, j) -> (, j) // expected-error {{expected affine expression}}
// -----
#hello_world (i, j) [s0] -> (i, j) // expected-error {{expected '=' in attribute alias definition}}
// -----
#hello_world = (i, j) [s0] -> (2*i*, 3*j*i*2 + 5) // expected-error {{missing right operand of binary op}}
// -----
#hello_world = (i, j) [s0] -> (i+, i+j+2 + 5) // expected-error {{missing right operand of binary op}}
// -----
#hello_world = (i, j) [s0] -> ((s0 + i, j) // expected-error {{expected ')'}}
// -----
#hello_world = (i, j) [s0] -> (((s0 + (i + j) + 5), j) // expected-error {{expected ')'}}
// -----
#hello_world = (i, j) [s0] -> i + s0, j) // expected-error {{expected '(' at start of affine map range}}
// -----
#hello_world = (i, j) [s0] -> (x) // expected-error {{use of undeclared identifier}}
// -----
#hello_world = (i, j, i) [s0] -> (i) // expected-error {{redefinition of identifier 'i'}}
// -----
#hello_world = (i, j) [s0, s1, s0] -> (i) // expected-error {{redefinition of identifier 's0'}}
// -----
#hello_world = (i, j) [i, s0] -> (j) // expected-error {{redefinition of identifier 'i'}}
// -----
#hello_world = (i, j) [s0, s1] -> () // expected-error {{expected list element}}
// -----
#hello_world = (i, j) [s0, s1] -> (+i, j) // expected-error {{missing left operand of binary op}}
// -----
#hello_world = (i, j) [s0, s1] -> (i, *j) // expected-error {{missing left operand of binary op}}
// -----
#hello_world = (i, j) [s0, s1] -> (floordiv i 2, j) // expected-error {{missing left operand of binary op}}
// -----
#hello_world = (i, j) [s0, s1] -> (ceildiv i 2, j) // expected-error {{missing left operand of binary op}}
// -----
#hello_world = (i, j) [s0, s1] -> (mod i 2, j) // expected-error {{missing left operand of binary op}}
// -----
#hello_world = (i, j) [s0, s1] -> (-(), j)
// expected-error@-1 {{no expression inside parentheses}}
// expected-error@-2 {{missing operand of negation}}
// -----
#hello_world = (i, j) [s0, s1] -> (i, *j+5) // expected-error {{missing left operand of binary op}}
// -----
#hello_world = (i, j) [s0, s1] -> (i, floordiv j+5) // expected-error {{missing left operand of binary op}}
// -----
#hello_world = (i, j) [s0, s1] -> (i, ceildiv j+5) // expected-error {{missing left operand of binary op}}
// -----
#hello_world = (i, j) [s0, s1] -> (i, mod j+5) // expected-error {{missing left operand of binary op}}
// -----
#hello_world = (i, j) [s0, s1] -> (i*j, j) // expected-error {{non-affine expression: at least one of the multiply operands has to be either a constant or symbolic}}
// -----
#hello_world = (i, j) [s0, s1] -> (i, j + j ceildiv 128 mod 16 * i - 4) // expected-error {{non-affine expression: at least one of the multiply operands has to be either a constant or symbolic}}
// -----
#hello_world = (i, j) [s0, s1] -> (i, j floordiv i) // expected-error {{non-affine expression: right operand of floordiv has to be either a constant or symbolic}}
// -----
#hello_world = (i, j) [s0, s1] -> (i, i*2 ceildiv j*5) // expected-error {{non-affine expression: right operand of ceildiv has to be either a constant or symbolic}}
// -----
#hello_world = (i, j) [s0, s1] -> (i, i mod (2+i)) // expected-error {{non-affine expression: right operand of mod has to be either a constant or symbolic}}
// -----
#hello_world = (i, j) [s0, s1] -> (-1*i j, j) // expected-error {{expected ',' or ')'}}
// -----
#hello_world = (i, j) -> (i, 3*d0 + ) // expected-error {{use of undeclared identifier}}
// TODO(bondhugula): Add more tests; coverage of error messages emitted not complete
// -----
#ABC = (i,j) -> (i+j)
#ABC = (i,j) -> (i+j) // expected-error {{redefinition of attribute alias id 'ABC'}}
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