116 lines
3.0 KiB
Rust
116 lines
3.0 KiB
Rust
//! Test command for testing the code generator pipeline
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//!
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//! The `compile` test command runs each function through the full code generator pipeline
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use cretonne;
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use cretonne::binemit;
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use cretonne::ir;
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use cretonne::print_errors::pretty_error;
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use cton_reader::TestCommand;
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use std::borrow::Cow;
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use std::fmt::Write;
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use subtest::{run_filecheck, Context, Result, SubTest};
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struct TestCompile;
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pub fn subtest(parsed: &TestCommand) -> Result<Box<SubTest>> {
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assert_eq!(parsed.command, "compile");
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if !parsed.options.is_empty() {
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Err(format!("No options allowed on {}", parsed))
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} else {
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Ok(Box::new(TestCompile))
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}
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}
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impl SubTest for TestCompile {
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fn name(&self) -> Cow<str> {
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Cow::from("compile")
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}
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fn is_mutating(&self) -> bool {
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true
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}
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fn needs_isa(&self) -> bool {
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true
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}
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fn run(&self, func: Cow<ir::Function>, context: &Context) -> Result<()> {
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let isa = context.isa.expect("compile needs an ISA");
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// Create a compilation context, and drop in the function.
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let mut comp_ctx = cretonne::Context::new();
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comp_ctx.func = func.into_owned();
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let code_size = comp_ctx.compile(isa).map_err(|e| {
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pretty_error(&comp_ctx.func, context.isa, e)
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})?;
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dbg!(
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"Generated {} bytes of code:\n{}",
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code_size,
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comp_ctx.func.display(isa)
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);
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// Verify that the returned code size matches the emitted bytes.
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let mut sink = SizeSink { offset: 0 };
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binemit::emit_function(
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&comp_ctx.func,
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|func, inst, div, sink| isa.emit_inst(func, inst, div, sink),
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&mut sink,
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);
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if sink.offset != code_size {
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return Err(format!(
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"Expected code size {}, got {}",
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code_size,
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sink.offset
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));
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}
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// Run final code through filecheck.
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let mut text = String::new();
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write!(&mut text, "{}", &comp_ctx.func.display(Some(isa)))
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.map_err(|e| e.to_string())?;
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run_filecheck(&text, context)
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}
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}
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/// Code sink that simply counts bytes.
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struct SizeSink {
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offset: binemit::CodeOffset,
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}
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impl binemit::CodeSink for SizeSink {
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fn offset(&self) -> binemit::CodeOffset {
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self.offset
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}
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fn put1(&mut self, _: u8) {
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self.offset += 1;
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}
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fn put2(&mut self, _: u16) {
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self.offset += 2;
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}
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fn put4(&mut self, _: u32) {
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self.offset += 4;
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}
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fn put8(&mut self, _: u64) {
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self.offset += 8;
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}
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fn reloc_ebb(&mut self, _reloc: binemit::Reloc, _ebb_offset: binemit::CodeOffset) {}
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fn reloc_external(
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&mut self,
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_reloc: binemit::Reloc,
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_name: &ir::ExternalName,
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_addend: binemit::Addend,
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) {
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}
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fn reloc_jt(&mut self, _reloc: binemit::Reloc, _jt: ir::JumpTable) {}
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fn trap(&mut self, _code: ir::TrapCode, _srcloc: ir::SourceLoc) {}
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}
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