| 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 external_i128_call_uses_pair_arg_and_return_regs_at_o0() { |
| 24 | let asm = capture_text( |
| 25 | CaptureRequest { |
| 26 | input: fixture("integer16_external_call.f90"), |
| 27 | requested: BTreeSet::from([Stage::Asm]), |
| 28 | opt_level: OptLevel::O0, |
| 29 | }, |
| 30 | Stage::Asm, |
| 31 | ); |
| 32 | |
| 33 | assert!( |
| 34 | asm.contains("bl _add_ext"), |
| 35 | "external integer(16) call should branch to the declared symbol:\n{}", |
| 36 | asm |
| 37 | ); |
| 38 | assert!( |
| 39 | asm.matches("ldp x0, x1").count() >= 1, |
| 40 | "external integer(16) ABI should load the outgoing pair-register arg with LDP x0, x1:\n{}", |
| 41 | asm |
| 42 | ); |
| 43 | assert!( |
| 44 | asm.matches("stp x0, x1").count() >= 1, |
| 45 | "external integer(16) ABI should spill the returned pair-register value with STP x0, x1:\n{}", |
| 46 | asm |
| 47 | ); |
| 48 | } |
| 49 | |
| 50 | #[test] |
| 51 | fn external_i128_call_object_snapshot_tracks_external_symbol_at_o0() { |
| 52 | let obj = capture_text( |
| 53 | CaptureRequest { |
| 54 | input: fixture("integer16_external_call.f90"), |
| 55 | requested: BTreeSet::from([Stage::Obj]), |
| 56 | opt_level: OptLevel::O0, |
| 57 | }, |
| 58 | Stage::Obj, |
| 59 | ); |
| 60 | |
| 61 | assert!( |
| 62 | obj.contains("external _add_ext"), |
| 63 | "object snapshot should preserve the unresolved external integer(16) symbol:\n{}", |
| 64 | obj |
| 65 | ); |
| 66 | } |
| 67 | |
| 68 | #[test] |
| 69 | fn external_i128_call_object_snapshot_is_deterministic_at_o0() { |
| 70 | let source = fixture("integer16_external_call.f90"); |
| 71 | let first = capture_text( |
| 72 | CaptureRequest { |
| 73 | input: source.clone(), |
| 74 | requested: BTreeSet::from([Stage::Obj]), |
| 75 | opt_level: OptLevel::O0, |
| 76 | }, |
| 77 | Stage::Obj, |
| 78 | ); |
| 79 | let second = capture_text( |
| 80 | CaptureRequest { |
| 81 | input: source, |
| 82 | requested: BTreeSet::from([Stage::Obj]), |
| 83 | opt_level: OptLevel::O0, |
| 84 | }, |
| 85 | Stage::Obj, |
| 86 | ); |
| 87 | |
| 88 | assert_eq!( |
| 89 | first, second, |
| 90 | "external integer(16) call object snapshots should be deterministic at O0" |
| 91 | ); |
| 92 | } |
| 93 |