Method run

cranelift/filetests/src/test_compile.rs:51–104

(&self, func: Cow<ir::Function>, context: &Context)

    }

    fn run(&self, func: Cow<ir::Function>, context: &Context) -> Result<()> {
        let isa = context.isa.expect("compile needs an ISA");
        let params = func.params.clone();
        let mut comp_ctx = cranelift_codegen::Context::for_function(func.into_owned());

        // With `MachBackend`s, we need to explicitly request disassembly results.
        comp_ctx.set_disasm(true);

        let compiled_code = comp_ctx.compile(isa, &mut Default::default());

        let compiled_code = if self.expect_fail {
            if compiled_code.is_ok() {
                anyhow::bail!("Expected compilation failure but compilation succeeded");
            }
            return Ok(());
        } else {
            compiled_code.map_err(|e| crate::pretty_anyhow_error(&e.func, e.inner))?
        };
        let total_size = compiled_code.code_info().total_size;

        let vcode = compiled_code.vcode.as_ref().unwrap();

        info!("Generated {total_size} bytes of code:\n{vcode}");

        if self.precise_output {
            let dis = match isa.triple().architecture {
                target_lexicon::Architecture::Pulley32 | target_lexicon::Architecture::Pulley64 => {
                    // Disable hexdumps/offsets to reduce the churn in these
                    // tests as instructions are encoded differently and/or
                    // their immediates change.
                    let mut disas =
                        pulley_interpreter::disas::Disassembler::new(compiled_code.buffer.data());
                    disas.hexdump(false).offsets(false);
                    pulley_interpreter::decode::Decoder::decode_all(&mut disas)?;
                    disas.disas().to_string()
                }
                _ => {
                    let cs = isa.to_capstone().map_err(|e| anyhow::format_err!("{e}"))?;
                    compiled_code.disassemble(Some(&params), &cs)?
                }
            };

            let actual = Vec::from_iter(
                std::iter::once("VCode:")
                    .chain(compiled_code.vcode.as_ref().unwrap().lines())
                    .chain(["", "Disassembled:"])
                    .chain(dis.lines()),
            );

            check_precise_output(&actual, context)
        } else {
            run_filecheck(&vcode, context)
        }
    }
}