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Merged
cfallin merged 4 commits into from
Sep 23, 2025
Merged

Improve the generation of fuzz functions #243

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eb0db5b
fuzz: improve `Options` control over generated functions
abrown Sep 19, 2025
98e8862
fuzz: avoid needless iteration over blocks
abrown Sep 19, 2025
da7313a
fuzz: refactor several large blocks into separate functions
abrown Sep 19, 2025
7cc4fe3
fuzz: add some helpful comments
abrown Sep 19, 2025
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5 changes: 3 additions & 2 deletions fuzz/fuzz_targets/fastalloc_checker.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -26,6 +26,7 @@ impl Arbitrary<'_> for TestCase {
clobbers: true,
reftypes: false,
callsite_ish_constraints: true,
..Options::default()
},
)?,
})
Expand All @@ -37,8 +38,8 @@ fuzz_target!(|testcase: TestCase| {
let _ = env_logger::try_init();
log::trace!("func:\n{:?}", func);
let env = regalloc2::fuzzing::func::machine_env();
let out =
regalloc2::fuzzing::fastalloc::run(&func, &env, true, false).expect("regalloc did not succeed");
let out = regalloc2::fuzzing::fastalloc::run(&func, &env, true, false)
.expect("regalloc did not succeed");

let mut checker = Checker::new(&func, &env);
checker.prepare(&out);
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1 change: 1 addition & 0 deletions fuzz/fuzz_targets/ion_checker.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -26,6 +26,7 @@ impl Arbitrary<'_> for TestCase {
clobbers: true,
reftypes: true,
callsite_ish_constraints: true,
..Options::default()
},
)?,
})
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1 change: 1 addition & 0 deletions fuzz/fuzz_targets/ssagen.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -27,6 +27,7 @@ impl Arbitrary<'_> for TestCase {
clobbers: true,
reftypes: true,
callsite_ish_constraints: true,
..Options::default()
},
)?,
})
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