54 lines
1.5 KiB
Rust
54 lines
1.5 KiB
Rust
//! Test command for testing the DCE pass.
|
|
//!
|
|
//! The `dce` test command runs each function through the DCE pass after ensuring
|
|
//! that all instructions are legal for the target.
|
|
//!
|
|
//! The resulting function is sent to `filecheck`.
|
|
|
|
use cretonne_codegen;
|
|
use cretonne_codegen::ir::Function;
|
|
use cretonne_codegen::print_errors::pretty_error;
|
|
use cretonne_reader::TestCommand;
|
|
use std::borrow::Cow;
|
|
use std::fmt::Write;
|
|
use subtest::{run_filecheck, Context, Result, SubTest};
|
|
|
|
struct TestDCE;
|
|
|
|
pub fn subtest(parsed: &TestCommand) -> Result<Box<SubTest>> {
|
|
assert_eq!(parsed.command, "dce");
|
|
if !parsed.options.is_empty() {
|
|
Err(format!("No options allowed on {}", parsed))
|
|
} else {
|
|
Ok(Box::new(TestDCE))
|
|
}
|
|
}
|
|
|
|
impl SubTest for TestDCE {
|
|
fn name(&self) -> Cow<str> {
|
|
Cow::from("dce")
|
|
}
|
|
|
|
fn is_mutating(&self) -> bool {
|
|
true
|
|
}
|
|
|
|
fn run(&self, func: Cow<Function>, context: &Context) -> Result<()> {
|
|
// Create a compilation context, and drop in the function.
|
|
let mut comp_ctx = cretonne_codegen::Context::new();
|
|
comp_ctx.func = func.into_owned();
|
|
|
|
comp_ctx.flowgraph();
|
|
comp_ctx.compute_loop_analysis();
|
|
comp_ctx.dce(context.flags_or_isa()).map_err(|e| {
|
|
pretty_error(&comp_ctx.func, context.isa, Into::into(e))
|
|
})?;
|
|
|
|
let mut text = String::new();
|
|
write!(&mut text, "{}", &comp_ctx.func).map_err(
|
|
|e| e.to_string(),
|
|
)?;
|
|
run_filecheck(&text, context)
|
|
}
|
|
}
|