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| 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 | +fn capture_run_stdout(request: CaptureRequest) -> String { |
| 23 | + let result = capture_from_path(&request).expect("capture should succeed"); |
| 24 | + match result.get(Stage::Run) { |
| 25 | + Some(CapturedStage::Run(run)) => run.stdout.clone(), |
| 26 | + _ => panic!("missing run stage"), |
| 27 | + } |
| 28 | +} |
| 29 | + |
| 30 | +#[test] |
| 31 | +fn o3_vectorizes_where_with_invariant_scalar_threshold() { |
| 32 | + let source = fixture("do_loop_vectorize_where_invariant.f90"); |
| 33 | + |
| 34 | + let o3_ir = capture_text( |
| 35 | + CaptureRequest { |
| 36 | + input: source.clone(), |
| 37 | + requested: BTreeSet::from([Stage::OptIr]), |
| 38 | + opt_level: OptLevel::O3, |
| 39 | + }, |
| 40 | + Stage::OptIr, |
| 41 | + ); |
| 42 | + // The scalar `thresh` should be broadcast in the preheader so |
| 43 | + // the per-iteration vfcmp gets a vector lane to compare against. |
| 44 | + assert!( |
| 45 | + o3_ir.contains("vbroadcast"), |
| 46 | + "expected vbroadcast (loop-invariant threshold):\n{}", |
| 47 | + o3_ir |
| 48 | + ); |
| 49 | + assert!( |
| 50 | + o3_ir.contains("vselect"), |
| 51 | + "expected vselect:\n{}", |
| 52 | + o3_ir |
| 53 | + ); |
| 54 | + |
| 55 | + let stdout = capture_run_stdout(CaptureRequest { |
| 56 | + input: source, |
| 57 | + requested: BTreeSet::from([Stage::Run]), |
| 58 | + opt_level: OptLevel::O3, |
| 59 | + }); |
| 60 | + let trimmed: Vec<&str> = stdout |
| 61 | + .lines() |
| 62 | + .map(|l| l.trim()) |
| 63 | + .filter(|l| !l.is_empty()) |
| 64 | + .collect(); |
| 65 | + assert_eq!(trimmed.len(), 1, "expected one output line:\n{}", stdout); |
| 66 | + let expected = "1.0000000E0 2.0000000E1 2.1000000E1 1.6000000E1"; |
| 67 | + assert_eq!(trimmed[0], expected, "WHERE invariant wrong: {:?}", trimmed[0]); |
| 68 | +} |