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cranelift: CLIF Fuzzer generate brz/brnz/bricmp instructions

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This commit is contained in:
Afonso Bordado
2021-07-06 10:09:19 +01:00
parent f4bd7d17a3
commit f0f2efba26
2 changed files with 199 additions and 88 deletions
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28
cranelift/fuzzgen/src/lib.rs
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@@ -47,6 +47,23 @@ where
}
}
fn generate_datavalue(&mut self, ty: Type) -> Result<DataValue> {
Ok(match ty {
ty if ty.is_int() => {
let imm = match ty {
I8 => self.u.arbitrary::<i8>()? as i128,
I16 => self.u.arbitrary::<i16>()? as i128,
I32 => self.u.arbitrary::<i32>()? as i128,
I64 => self.u.arbitrary::<i64>()? as i128,
_ => unreachable!(),
};
DataValue::from_integer(imm, ty)?
}
ty if ty.is_bool() => DataValue::B(bool::arbitrary(self.u)?),
_ => unimplemented!(),
})
}
fn generate_test_inputs(&mut self, signature: &Signature) -> Result<Vec<TestCaseInput>> {
let num_tests = self.u.int_in_range(self.config.test_case_inputs.clone())?;
let mut inputs = Vec::with_capacity(num_tests);
@@ -55,16 +72,7 @@ where
let test_args = signature
.params
.iter()
.map(|p| {
let imm = match p.value_type {
I8 => self.u.arbitrary::<i8>()? as i128,
I16 => self.u.arbitrary::<i16>()? as i128,
I32 => self.u.arbitrary::<i32>()? as i128,
I64 => self.u.arbitrary::<i64>()? as i128,
_ => unreachable!(),
};
Ok(DataValue::from_integer(imm, p.value_type)?)
})
.map(|p| self.generate_datavalue(p.value_type))
.collect::<Result<TestCaseInput>>()?;
inputs.push(test_args);