| 1 | use std::collections::BTreeSet; |
| 2 | use std::path::PathBuf; |
| 3 | |
| 4 | use armfortas::driver::OptLevel; |
| 5 | use armfortas::testing::{capture_from_path, CaptureRequest, CapturedStage, Stage}; |
| 6 | |
| 7 | fn fixture(name: &str) -> PathBuf { |
| 8 | let path = PathBuf::from("tests/fixtures").join(name); |
| 9 | assert!(path.exists(), "missing test fixture {}", path.display()); |
| 10 | path |
| 11 | } |
| 12 | |
| 13 | fn capture_text(request: CaptureRequest, stage: Stage) -> String { |
| 14 | let result = capture_from_path(&request).expect("capture should succeed"); |
| 15 | match result.get(stage) { |
| 16 | Some(CapturedStage::Text(text)) => text.clone(), |
| 17 | Some(CapturedStage::Run(_)) => panic!("expected text stage for {}", stage.as_str()), |
| 18 | None => panic!("missing requested stage {}", stage.as_str()), |
| 19 | } |
| 20 | } |
| 21 | |
| 22 | #[test] |
| 23 | fn o1_optir_const_folds_integer16_mul() { |
| 24 | let raw_ir = capture_text( |
| 25 | CaptureRequest { |
| 26 | input: fixture("integer16_mul.f90"), |
| 27 | requested: BTreeSet::from([Stage::Ir]), |
| 28 | opt_level: OptLevel::O0, |
| 29 | }, |
| 30 | Stage::Ir, |
| 31 | ); |
| 32 | let opt_ir = capture_text( |
| 33 | CaptureRequest { |
| 34 | input: fixture("integer16_mul.f90"), |
| 35 | requested: BTreeSet::from([Stage::OptIr]), |
| 36 | opt_level: OptLevel::O1, |
| 37 | }, |
| 38 | Stage::OptIr, |
| 39 | ); |
| 40 | |
| 41 | assert!( |
| 42 | raw_ir.contains("imul"), |
| 43 | "raw integer(16) IR should still show the wide multiply before O1:\n{}", |
| 44 | raw_ir |
| 45 | ); |
| 46 | assert!( |
| 47 | opt_ir.contains("const_int 42 : i128") || !opt_ir.contains("i128"), |
| 48 | "O1 integer(16) pipeline should fold the wide multiply away before backend, either to a constant or all the way out of the optimized IR:\n{}", |
| 49 | opt_ir |
| 50 | ); |
| 51 | assert!( |
| 52 | !opt_ir.contains("imul"), |
| 53 | "O1 integer(16) pipeline should remove the wide multiply before backend:\n{}", |
| 54 | opt_ir |
| 55 | ); |
| 56 | } |
| 57 | |
| 58 | #[test] |
| 59 | fn o1_backend_runs_internal_integer16_call() { |
| 60 | let result = capture_from_path(&CaptureRequest { |
| 61 | input: fixture("integer16_internal_call.f90"), |
| 62 | requested: BTreeSet::from([Stage::Run]), |
| 63 | opt_level: OptLevel::O1, |
| 64 | }) |
| 65 | .expect("integer(16) internal call should run at O1"); |
| 66 | |
| 67 | let run = result |
| 68 | .get(Stage::Run) |
| 69 | .and_then(CapturedStage::as_run) |
| 70 | .expect("missing run capture"); |
| 71 | |
| 72 | assert_eq!( |
| 73 | run.exit_code, 0, |
| 74 | "expected successful O1 integer(16) run:\n{:#?}", |
| 75 | run |
| 76 | ); |
| 77 | assert!( |
| 78 | run.stdout.contains('1'), |
| 79 | "O1 integer(16) internal call program should print score 1:\n{}", |
| 80 | run.stdout |
| 81 | ); |
| 82 | } |
| 83 | |
| 84 | #[test] |
| 85 | fn o1_integer16_object_snapshot_is_deterministic() { |
| 86 | let source = fixture("integer16_mul.f90"); |
| 87 | let first = capture_text( |
| 88 | CaptureRequest { |
| 89 | input: source.clone(), |
| 90 | requested: BTreeSet::from([Stage::Obj]), |
| 91 | opt_level: OptLevel::O1, |
| 92 | }, |
| 93 | Stage::Obj, |
| 94 | ); |
| 95 | let second = capture_text( |
| 96 | CaptureRequest { |
| 97 | input: source, |
| 98 | requested: BTreeSet::from([Stage::Obj]), |
| 99 | opt_level: OptLevel::O1, |
| 100 | }, |
| 101 | Stage::Obj, |
| 102 | ); |
| 103 | |
| 104 | assert_eq!( |
| 105 | first, second, |
| 106 | "O1 integer(16) object snapshots should stay deterministic once the wide multiply folds away" |
| 107 | ); |
| 108 | } |
| 109 | |
| 110 | #[test] |
| 111 | fn o1_optir_promotes_branchy_integer16_local() { |
| 112 | let raw_ir = capture_text( |
| 113 | CaptureRequest { |
| 114 | input: fixture("integer16_branchy_mem2reg.f90"), |
| 115 | requested: BTreeSet::from([Stage::Ir]), |
| 116 | opt_level: OptLevel::O0, |
| 117 | }, |
| 118 | Stage::Ir, |
| 119 | ); |
| 120 | let opt_ir = capture_text( |
| 121 | CaptureRequest { |
| 122 | input: fixture("integer16_branchy_mem2reg.f90"), |
| 123 | requested: BTreeSet::from([Stage::OptIr]), |
| 124 | opt_level: OptLevel::O1, |
| 125 | }, |
| 126 | Stage::OptIr, |
| 127 | ); |
| 128 | |
| 129 | assert!( |
| 130 | raw_ir.contains("alloca"), |
| 131 | "raw integer(16) branchy IR should still materialize stack storage before mem2reg:\n{}", |
| 132 | raw_ir |
| 133 | ); |
| 134 | assert!( |
| 135 | raw_ir.contains("load"), |
| 136 | "raw integer(16) branchy IR should still load the local before O1 promotion:\n{}", |
| 137 | raw_ir |
| 138 | ); |
| 139 | assert!( |
| 140 | !opt_ir.contains("alloca"), |
| 141 | "O1 integer(16) pipeline should eliminate the stack slot after mem2reg promotion:\n{}", |
| 142 | opt_ir |
| 143 | ); |
| 144 | assert!( |
| 145 | !opt_ir.contains("load"), |
| 146 | "O1 integer(16) pipeline should eliminate wide loads after promotion:\n{}", |
| 147 | opt_ir |
| 148 | ); |
| 149 | } |
| 150 | |
| 151 | #[test] |
| 152 | fn o1_branchy_integer16_program_runs_after_mem2reg() { |
| 153 | let result = capture_from_path(&CaptureRequest { |
| 154 | input: fixture("integer16_branchy_mem2reg.f90"), |
| 155 | requested: BTreeSet::from([Stage::Run]), |
| 156 | opt_level: OptLevel::O1, |
| 157 | }) |
| 158 | .expect("branchy integer(16) program should run at O1 after mem2reg promotion"); |
| 159 | |
| 160 | let run = result |
| 161 | .get(Stage::Run) |
| 162 | .and_then(CapturedStage::as_run) |
| 163 | .expect("missing run capture"); |
| 164 | |
| 165 | assert_eq!( |
| 166 | run.exit_code, 0, |
| 167 | "expected successful O1 branchy integer(16) run:\n{:#?}", |
| 168 | run |
| 169 | ); |
| 170 | assert!( |
| 171 | run.stdout.contains('1'), |
| 172 | "branchy O1 integer(16) program should print score 1:\n{}", |
| 173 | run.stdout |
| 174 | ); |
| 175 | } |
| 176 |