aco_tests failure with clang build
failed tests (unexpected):
optimize.const_comparison_ordering/gfx9
pattern at line 648 of test_optimizer.cpp failed: expected 'l' in output, got 'n'
at line 1, column 22 of pattern: " s2: %tmp6_0 = v_cmp_lt_f32 4.0, %a"
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at line 17, column 19 of output: " s2: %34 = v_cmp_neq_f32 %1, %1"
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