0ddfe97a09
This commit changes how both the shared flags and ISA flags are stored in the serialized module to detect incompatibilities when a serialized module is instantiated. It improves the error reporting when a compiled module has mismatched shared flags.
99 lines
3.1 KiB
Rust
99 lines
3.1 KiB
Rust
//! The module that implements the `wasmtime settings` command.
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use anyhow::{anyhow, Result};
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use std::str::FromStr;
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use structopt::StructOpt;
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use wasmtime_environ::settings::{self, Setting, SettingKind};
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use wasmtime_jit::native;
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/// Displays available Cranelift settings for a target.
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#[derive(StructOpt)]
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#[structopt(name = "run")]
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pub struct SettingsCommand {
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/// The target triple to get the settings for; defaults to the host triple.
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#[structopt(long, value_name = "TARGET")]
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target: Option<String>,
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}
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impl SettingsCommand {
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/// Executes the command.
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pub fn execute(self) -> Result<()> {
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let settings = match &self.target {
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Some(target) => {
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native::lookup(target_lexicon::Triple::from_str(target).map_err(|e| anyhow!(e))?)?
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}
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None => native::builder(),
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};
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let mut enums = (Vec::new(), 0, "Enum settings:");
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let mut nums = (Vec::new(), 0, "Numerical settings:");
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let mut bools = (Vec::new(), 0, "Boolean settings:");
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let mut presets = (Vec::new(), 0, "Presets:");
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for setting in settings.iter() {
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let (collection, max, _) = match setting.kind {
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SettingKind::Enum => &mut enums,
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SettingKind::Num => &mut nums,
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SettingKind::Bool => &mut bools,
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SettingKind::Preset => &mut presets,
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};
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if setting.name.len() > *max {
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*max = setting.name.len();
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}
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collection.push(setting);
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}
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if enums.0.is_empty() && nums.0.is_empty() && bools.0.is_empty() && presets.0.is_empty() {
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println!("Target '{}' has no settings.", settings.triple());
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return Ok(());
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}
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println!("Cranelift settings for target '{}':", settings.triple());
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for (collection, max, header) in &mut [enums, nums, bools, presets] {
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if collection.is_empty() {
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continue;
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}
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collection.sort_by_key(|k| k.name);
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println!();
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Self::print_settings(header, collection, *max);
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}
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if self.target.is_none() {
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let isa = settings.finish(settings::Flags::new(settings::builder()));
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println!();
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println!("Settings inferred for the current host:");
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let mut values = isa.isa_flags();
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values.sort_by_key(|k| k.name);
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for value in values {
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if value.as_bool().unwrap_or(false) {
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println!(" {}", value.name);
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}
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}
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}
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Ok(())
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}
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fn print_settings(header: &str, settings: &[Setting], width: usize) {
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println!("{}", header);
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for setting in settings {
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println!(
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" {:width$} {}{}",
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setting.name,
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setting.description,
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setting
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.values
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.map(|v| format!(" Supported values: {}.", v.join(", ")))
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.unwrap_or("".to_string()),
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width = width + 2
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);
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}
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}
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}
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