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make ./miri run a bit more silent; add option to control seeds tested by many-seeds

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This commit is contained in:
Ralf Jung 2022-11-28 08:40:41 +01:00
parent af92b04855
commit ad9784eb3d
2 changed files with 16 additions and 9 deletions
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16
src/tools/miri/cargo-miri/src/setup.rs
View File

@ -99,12 +99,10 @@ pub fn setup(subcommand: &MiriCommand, target: &str, rustc_version: &VersionMeta
// `config.toml`.
command.env("RUSTC_WRAPPER", "");
if only_setup {
if print_sysroot {
// Be extra sure there is no noise on stdout.
command.stdout(process::Stdio::null());
}
if only_setup && !print_sysroot {
// Forward output.
} else {
// Supress output.
command.stdout(process::Stdio::null());
command.stderr(process::Stdio::null());
}
@ -120,7 +118,9 @@ pub fn setup(subcommand: &MiriCommand, target: &str, rustc_version: &VersionMeta
std::env::set_var("MIRI_SYSROOT", &sysroot_dir);
// Do the build.
if only_setup {
if print_sysroot {
// Be silent.
} else if only_setup {
// We want to be explicit.
eprintln!("Preparing a sysroot for Miri (target: {target})...");
} else {
@ -143,7 +143,9 @@ pub fn setup(subcommand: &MiriCommand, target: &str, rustc_version: &VersionMeta
)
}
});
if only_setup {
if print_sysroot {
// Be silent.
} else if only_setup {
eprintln!("A sysroot for Miri is now available in `{}`.", sysroot_dir.display());
} else {
eprintln!("done");

9
src/tools/miri/miri
View File

@ -36,7 +36,8 @@ Mainly meant to be invoked by rust-analyzer.
./miri many-seeds <command>:
Runs <command> over and over again with different seeds for Miri. The MIRIFLAGS
variable is set to its original value appended with ` -Zmiri-seed=$SEED` for
many different seeds.
many different seeds. The MIRI_SEEDS variable controls how many seeds are being
tried; MIRI_SEED_START controls the first seed to try.
./miri bench <benches>:
Runs the benchmarks from bench-cargo-miri in hyperfine. hyperfine needs to be installed.
@ -174,7 +175,9 @@ rustc-push)
fi
;;
many-seeds)
for SEED in $(seq 0 255); do
MIRI_SEED_START=${MIRI_SEED_START:-0} # default to 0
MIRI_SEEDS=${MIRI_SEEDS:-256} # default to 256
for SEED in $(seq $MIRI_SEED_START $(( $MIRI_SEED_START + $MIRI_SEEDS - 1 )) ); do
echo "Trying seed: $SEED"
MIRIFLAGS="$MIRIFLAGS -Zlayout-seed=$SEED -Zmiri-seed=$SEED" $@ || { echo "Failing seed: $SEED"; break; }
done
@ -249,6 +252,8 @@ export RUSTFLAGS="-C link-args=-Wl,-rpath,$LIBDIR $RUSTFLAGS"
# Build a sysroot and set MIRI_SYSROOT to use it. Arguments are passed to `cargo miri setup`.
build_sysroot() {
if ! MIRI_SYSROOT="$($CARGO run $CARGO_EXTRA_FLAGS --manifest-path "$MIRIDIR"/cargo-miri/Cargo.toml -- miri setup --print-sysroot "$@")"; then
# Run it again so the user can see the error.
$CARGO run $CARGO_EXTRA_FLAGS --manifest-path "$MIRIDIR"/cargo-miri/Cargo.toml -- miri setup "$@"
echo "'cargo miri setup' failed"
exit 1
fi