| 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("test_programs").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 optir_respects_requested_optimization_level() { |
| 24 | let source = fixture("sroa_small_array.f90"); |
| 25 | |
| 26 | let o0_request = CaptureRequest { |
| 27 | input: source.clone(), |
| 28 | requested: BTreeSet::from([Stage::Ir, Stage::OptIr]), |
| 29 | opt_level: OptLevel::O0, |
| 30 | }; |
| 31 | let o2_request = CaptureRequest { |
| 32 | input: source, |
| 33 | requested: BTreeSet::from([Stage::Ir, Stage::OptIr]), |
| 34 | opt_level: OptLevel::O2, |
| 35 | }; |
| 36 | |
| 37 | let ir_o0 = capture_text(o0_request.clone(), Stage::Ir); |
| 38 | let opt_ir_o0 = capture_text(o0_request, Stage::OptIr); |
| 39 | assert_eq!( |
| 40 | ir_o0, opt_ir_o0, |
| 41 | "O0 optimized IR capture should match the lowered IR exactly" |
| 42 | ); |
| 43 | assert!( |
| 44 | ir_o0.contains("alloca [i32 x 3]"), |
| 45 | "baseline lowered IR should still show the aggregate alloca" |
| 46 | ); |
| 47 | |
| 48 | let ir_o2 = capture_text(o2_request.clone(), Stage::Ir); |
| 49 | let opt_ir_o2 = capture_text(o2_request, Stage::OptIr); |
| 50 | assert_eq!( |
| 51 | ir_o2, ir_o0, |
| 52 | "requested optimization level must not change the raw lowered IR capture" |
| 53 | ); |
| 54 | assert_ne!( |
| 55 | opt_ir_o2, ir_o2, |
| 56 | "O2 optimized IR capture should differ from the raw lowered IR" |
| 57 | ); |
| 58 | assert!( |
| 59 | !opt_ir_o2.contains("alloca [i32 x 3]"), |
| 60 | "SROA+mem2reg should remove the aggregate alloca from optimized IR" |
| 61 | ); |
| 62 | assert!( |
| 63 | opt_ir_o2.contains("const_int 60"), |
| 64 | "optimized IR should expose the folded result for the test program" |
| 65 | ); |
| 66 | } |
| 67 | |
| 68 | #[test] |
| 69 | fn backend_capture_stages_use_optimized_ir() { |
| 70 | let source = fixture("inline_pure.f90"); |
| 71 | let outlined_helper = "_afs_internal___prog_inline_pure_1"; |
| 72 | |
| 73 | let asm_o0 = capture_text( |
| 74 | CaptureRequest { |
| 75 | input: source.clone(), |
| 76 | requested: BTreeSet::from([Stage::Asm]), |
| 77 | opt_level: OptLevel::O0, |
| 78 | }, |
| 79 | Stage::Asm, |
| 80 | ); |
| 81 | let asm_o2 = capture_text( |
| 82 | CaptureRequest { |
| 83 | input: source, |
| 84 | requested: BTreeSet::from([Stage::Asm]), |
| 85 | opt_level: OptLevel::O2, |
| 86 | }, |
| 87 | Stage::Asm, |
| 88 | ); |
| 89 | |
| 90 | assert!( |
| 91 | asm_o0.contains(&format!("bl {}", outlined_helper)), |
| 92 | "O0 assembly should still contain the out-of-line helper call" |
| 93 | ); |
| 94 | assert!( |
| 95 | asm_o0.contains(&format!("{}:", outlined_helper)), |
| 96 | "O0 assembly should still emit the contained helper function" |
| 97 | ); |
| 98 | assert!( |
| 99 | !asm_o2.contains(&format!("bl {}", outlined_helper)), |
| 100 | "O2 assembly capture should reflect inlining and remove helper calls" |
| 101 | ); |
| 102 | assert!( |
| 103 | !asm_o2.contains(&format!("{}:", outlined_helper)), |
| 104 | "O2 assembly capture should not emit a now-dead outlined helper" |
| 105 | ); |
| 106 | } |
| 107 |