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mir(hints): add runtime tracing via NYASH_MIR_TRACE_HINTS; wire scope enter/leave at function entry/exit; add smoke to validate trace

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Selfhosting Dev
2025-09-20 05:50:45 +09:00
parent 765798a1ad
commit a811857cc8
2 changed files with 45 additions and 2 deletions
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19
src/mir/hints.rs
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@ -27,7 +27,23 @@ impl HintSink {
pub fn new() -> Self { Self { enabled: false } }
pub fn with_enabled(mut self, enabled: bool) -> Self { self.enabled = enabled; self }
#[inline] pub fn record(&mut self, _hint: HintKind) {}
#[inline]
pub fn record(&mut self, hint: HintKind) {
// Lightweight trace: print only when explicitly enabled via env
let enabled = self.enabled
|| std::env::var("NYASH_MIR_TRACE_HINTS").ok().as_deref() == Some("1");
if !enabled { return; }
match hint {
HintKind::ScopeEnter(id) => eprintln!("[mir][hint] ScopeEnter({})", id),
HintKind::ScopeLeave(id) => eprintln!("[mir][hint] ScopeLeave({})", id),
HintKind::Defer(calls) => eprintln!("[mir][hint] Defer({})", calls.join(";")),
HintKind::JoinResult(var) => eprintln!("[mir][hint] JoinResult({})", var),
HintKind::LoopCarrier(vars) => eprintln!("[mir][hint] LoopCarrier({})", vars.join(",")),
HintKind::LoopHeader => eprintln!("[mir][hint] LoopHeader"),
HintKind::LoopLatch => eprintln!("[mir][hint] LoopLatch"),
HintKind::NoEmptyPhi => eprintln!("[mir][hint] NoEmptyPhi"),
}
}
#[inline] pub fn scope_enter(&mut self, id: u32) { self.record(HintKind::ScopeEnter(id)); }
#[inline] pub fn scope_leave(&mut self, id: u32) { self.record(HintKind::ScopeLeave(id)); }
#[inline] pub fn defer_calls<S: Into<String>>(&mut self, calls: impl IntoIterator<Item = S>) {
@ -41,4 +57,3 @@ impl HintSink {
#[inline] pub fn loop_latch(&mut self) { self.record(HintKind::LoopLatch); }
#[inline] pub fn no_empty_phi(&mut self) { self.record(HintKind::NoEmptyPhi); }
}

28
tools/test/smoke/mir/hints_trace_smoke.sh Normal file
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@ -0,0 +1,28 @@
#!/usr/bin/env bash
set -euo pipefail
root=$(cd "$(dirname "$0")"/../../../.. && pwd)
bin="$root/target/release/nyash"
src="apps/tests/macro/match/literal_basic.nyash"
if [ ! -x "$bin" ]; then
echo "nyash binary not found at $bin; build first (cargo build --release)" >&2
exit 1
fi
export NYASH_MIR_TRACE_HINTS=1
# Capture stderr (where hints are printed)
out=$({ "$bin" --backend vm "$src" 1>/dev/null; } 2>&1 || true)
echo "$out" | rg -q "\[mir\]\[hint\] ScopeEnter\(0\)" || {
echo "[FAIL] missing ScopeEnter(0) hint" >&2
exit 2
}
echo "$out" | rg -q "\[mir\]\[hint\] ScopeLeave\(0\)" || {
echo "[FAIL] missing ScopeLeave(0) hint" >&2
exit 2
}
echo "[OK] MIR hints trace smoke passed"