3a13f79b66
This commit moves the cranelift tests and tools from the `wabt` crate on crates.io (which compiles the wabt C++ codebase) to the `wat` crate on crates.io which is a Rust parser for the `*.wat` format. This was motivated by me noticing that release builds on Windows are ~5 minutes longer than Linux builds, and local timing graphs showed that `wabt-sys` was by far the longest build step in the build process. This commit changes the `clif-util` binary where the `--enable-simd` flag is no longer respected with the text format as input, since the `wat` crate has no feature gating. This was already sort of not respected, though, since `--enable-simd` wasn't consulted for binary inputs which `clif-util` supports as well. If this isn't ok though then it should be ok to close this PR!
83 lines
2.5 KiB
Rust
83 lines
2.5 KiB
Rust
//! Utility functions.
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use cranelift_codegen::isa;
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use cranelift_codegen::isa::TargetIsa;
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use cranelift_codegen::settings::{self, FlagsOrIsa};
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use cranelift_reader::{parse_options, Location};
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use std::fs::File;
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use std::io::{self, Read};
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use std::path::Path;
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use std::str::FromStr;
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use target_lexicon::Triple;
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/// Read an entire file into a string.
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pub fn read_to_string<P: AsRef<Path>>(path: P) -> io::Result<String> {
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let mut buffer = String::new();
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if path.as_ref() == Path::new("-") {
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let stdin = io::stdin();
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let mut stdin = stdin.lock();
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stdin.read_to_string(&mut buffer)?;
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} else {
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let mut file = File::open(path)?;
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file.read_to_string(&mut buffer)?;
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}
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Ok(buffer)
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}
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/// Like `FlagsOrIsa`, but holds ownership.
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pub enum OwnedFlagsOrIsa {
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Flags(settings::Flags),
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Isa(Box<dyn TargetIsa>),
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}
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impl OwnedFlagsOrIsa {
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/// Produce a FlagsOrIsa reference.
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pub fn as_fisa(&self) -> FlagsOrIsa {
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match *self {
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Self::Flags(ref flags) => FlagsOrIsa::from(flags),
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Self::Isa(ref isa) => FlagsOrIsa::from(&**isa),
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}
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}
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}
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/// Parse "set" and "triple" commands.
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pub fn parse_sets_and_triple(
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flag_set: &[String],
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flag_triple: &str,
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) -> Result<OwnedFlagsOrIsa, String> {
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let mut flag_builder = settings::builder();
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parse_options(
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flag_set.iter().map(|x| x.as_str()),
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&mut flag_builder,
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Location { line_number: 0 },
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)
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.map_err(|err| err.to_string())?;
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let mut words = flag_triple.trim().split_whitespace();
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// Look for `target foo`.
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if let Some(triple_name) = words.next() {
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let triple = match Triple::from_str(triple_name) {
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Ok(triple) => triple,
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Err(parse_error) => return Err(parse_error.to_string()),
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};
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let mut isa_builder = isa::lookup(triple).map_err(|err| match err {
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isa::LookupError::SupportDisabled => {
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format!("support for triple '{}' is disabled", triple_name)
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}
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isa::LookupError::Unsupported => format!(
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"support for triple '{}' is not implemented yet",
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triple_name
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),
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})?;
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// Apply the ISA-specific settings to `isa_builder`.
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parse_options(words, &mut isa_builder, Location { line_number: 0 })
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.map_err(|err| err.to_string())?;
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Ok(OwnedFlagsOrIsa::Isa(
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isa_builder.finish(settings::Flags::new(flag_builder)),
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))
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} else {
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Ok(OwnedFlagsOrIsa::Flags(settings::Flags::new(flag_builder)))
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}
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}
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