1efa3d6f8b
* add clif-util compile option to output object file * switch from a box to a borrow * update objectmodule tests to use borrowed isa * put targetisa into an arc
130 lines
4.2 KiB
Rust
130 lines
4.2 KiB
Rust
//! Cranelift file reader library.
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//!
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//! The `cranelift_reader` library supports reading .clif files. This functionality is needed for
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//! testing Cranelift, but is not essential for a JIT compiler.
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#![deny(
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missing_docs,
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trivial_numeric_casts,
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unused_extern_crates,
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unstable_features
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)]
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#![warn(unused_import_braces)]
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#![cfg_attr(feature = "clippy", plugin(clippy(conf_file = "../../clippy.toml")))]
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#![cfg_attr(feature = "cargo-clippy", allow(clippy::new_without_default))]
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#![cfg_attr(
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feature = "cargo-clippy",
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warn(
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clippy::float_arithmetic,
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clippy::mut_mut,
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clippy::nonminimal_bool,
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clippy::map_unwrap_or,
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clippy::clippy::print_stdout,
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clippy::unicode_not_nfc,
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clippy::use_self
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)
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)]
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pub use crate::error::{Location, ParseError, ParseResult};
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pub use crate::isaspec::{parse_options, IsaSpec, ParseOptionError};
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pub use crate::parser::{parse_functions, parse_run_command, parse_test, ParseOptions};
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pub use crate::run_command::{Comparison, Invocation, RunCommand};
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pub use crate::sourcemap::SourceMap;
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pub use crate::testcommand::{TestCommand, TestOption};
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pub use crate::testfile::{Comment, Details, Feature, TestFile};
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mod error;
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mod isaspec;
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mod lexer;
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mod parser;
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mod run_command;
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mod sourcemap;
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mod testcommand;
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mod testfile;
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use anyhow::{Error, Result};
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use cranelift_codegen::isa::{self, OwnedTargetIsa};
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use cranelift_codegen::settings::{self, FlagsOrIsa};
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use std::str::FromStr;
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use target_lexicon::Triple;
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/// Like `FlagsOrIsa`, but holds ownership.
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#[allow(missing_docs)]
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pub enum OwnedFlagsOrIsa {
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Flags(settings::Flags),
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Isa(OwnedTargetIsa),
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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(flag_set: &[String], flag_triple: &str) -> Result<OwnedFlagsOrIsa> {
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let mut flag_builder = settings::builder();
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// Collect unknown system-wide settings, so we can try to parse them as target specific
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// settings, if a target is defined.
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let mut unknown_settings = Vec::new();
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match 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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Err(ParseOptionError::UnknownFlag { name, .. }) => {
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unknown_settings.push(name);
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}
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Err(ParseOptionError::UnknownValue { name, value, .. }) => {
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unknown_settings.push(format!("{}={}", name, value));
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}
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Err(ParseOptionError::Generic(err)) => return Err(err.into()),
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Ok(()) => {}
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}
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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(Error::from(parse_error)),
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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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anyhow::anyhow!("support for triple '{}' is disabled", triple_name)
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}
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isa::LookupError::Unsupported => anyhow::anyhow!(
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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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// Try to parse system-wide unknown settings as target-specific settings.
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parse_options(
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unknown_settings.iter().map(|x| x.as_str()),
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&mut isa_builder,
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Location { line_number: 0 },
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)
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.map_err(ParseError::from)?;
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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(ParseError::from)?;
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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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if !unknown_settings.is_empty() {
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anyhow::bail!("unknown settings: '{}'", unknown_settings.join("', '"));
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}
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Ok(OwnedFlagsOrIsa::Flags(settings::Flags::new(flag_builder)))
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}
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}
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