2927878707
Register locations can change throughout an EBB. Make sure the emit_inst() function considers this when encoding instructions and update the register diversion tracker.
96 lines
2.5 KiB
Rust
96 lines
2.5 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::binemit;
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use cretonne::ir;
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use cretonne;
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use cton_reader::TestCommand;
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use filetest::subtest::{SubTest, Context, Result};
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use std::borrow::Cow;
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use utils::pretty_error;
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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
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.compile(isa)
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.map_err(|e| pretty_error(&comp_ctx.func, context.isa, e))?;
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dbg!("Generated {} bytes of code:\n{}",
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code_size,
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comp_ctx.func.display(isa));
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// Finally 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(&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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if sink.offset != code_size {
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return Err(format!("Expected code size {}, got {}", code_size, sink.offset));
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}
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Ok(())
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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: ir::Ebb) {}
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fn reloc_func(&mut self, _reloc: binemit::Reloc, _fref: ir::FuncRef) {}
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fn reloc_jt(&mut self, _reloc: binemit::Reloc, _jt: ir::JumpTable) {}
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}
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