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Cache configuration documentation

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This commit is contained in:
Artur Jamro
2019-09-12 15:45:14 -07:00
committed by Dan Gohman
parent 1c22211d57
commit dde1c6ba58
18 changed files with 1238 additions and 233 deletions
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36
src/bin/wasm2obj.rs
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@@ -50,7 +50,7 @@ use std::str;
use std::str::FromStr;
use target_lexicon::Triple;
use wasmtime_debug::{emit_debugsections, read_debuginfo};
use wasmtime_environ::cache_init;
use wasmtime_environ::{cache_create_new_config, cache_init};
use wasmtime_environ::{
Compiler, Cranelift, ModuleEnvironment, ModuleVmctxInfo, Tunables, VMOffsets,
};
@@ -63,7 +63,8 @@ The translation is dependent on the environment chosen.
The default is a dummy environment that produces placeholder values.
Usage:
wasm2obj [--target TARGET] [-Odg] [--cache | --cache-config=<cache_config_file>] [--create-cache-config] [--enable-simd] <file> -o <output>
wasm2obj [--target TARGET] [-Odg] [--cache | --cache-config=<cache_config_file>] [--enable-simd] <file> -o <output>
wasm2obj --create-cache-config [--cache-config=<cache_config_file>]
wasm2obj --help | --version
Options:
@@ -73,10 +74,12 @@ Options:
-g generate debug information
-c, --cache enable caching system, use default configuration
--cache-config=<cache_config_file>
enable caching system, use specified cache configuration
enable caching system, use specified cache configuration;
can be used with --create-cache-config to specify custom file
--create-cache-config
used with --cache or --cache-config, creates default configuration and writes it to the disk,
will fail if specified file already exists (or default file if used with --cache)
creates default configuration and writes it to the disk,
use with --cache-config to specify custom config file
instead of default one
--enable-simd enable proposed SIMD instructions
-O, --optimize runs optimization passes on the translated functions
--version print the Cranelift version
@@ -91,7 +94,7 @@ struct Args {
flag_g: bool,
flag_debug: bool,
flag_cache: bool, // TODO change to disable cache after implementing cache eviction
flag_cache_config_file: Option<String>,
flag_cache_config: Option<String>,
flag_create_cache_config: bool,
flag_enable_simd: bool,
flag_optimize: bool,
@@ -123,10 +126,25 @@ fn main() {
Some(prefix)
};
if args.flag_create_cache_config {
match cache_create_new_config(args.flag_cache_config) {
Ok(path) => {
println!(
"Successfully created new configuation file at {}",
path.display()
);
return;
}
Err(err) => {
eprintln!("Error: {}", err);
process::exit(1);
}
}
}
let errors = cache_init(
args.flag_cache || args.flag_cache_config_file.is_some(),
args.flag_cache_config_file.as_ref(),
args.flag_create_cache_config,
args.flag_cache || args.flag_cache_config.is_some(),
args.flag_cache_config.as_ref(),
log_config,
);