docs: add inlineDemo tracing example (inline showcase)#232
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A small leaf helper square(x) called from two sites with storage-read args. At O2/O3 both sites inline into the caller -> two virtual activations in the tracer (the inline showcase, as sum/factorial were for tailcall). Args are non-constant (storage reads) so L1 fold can't collapse the inlined bodies. Verified against bugc: correct result (3^2 + 4^2 = 25) at O0-O3; zero inline marks at O0/O1, both sites inlined at O2 (108 -> 50 runtime instrs) and O3. Prose + TraceExample wiring to follow (writer/docs).
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A small leaf helper square(x) called from two sites with storage-read args. At O2/O3 both sites inline into the caller -> two virtual activations in the tracer (the inline showcase, as sum/factorial were for tailcall). Args are non-constant (storage reads) so L1 fold can't collapse the inlined bodies. Verified against bugc: correct result (3^2 + 4^2 = 25) at O0-O3; zero inline marks at O0/O1, both sites inlined at O2 (108 -> 50 runtime instrs) and O3. Prose + TraceExample wiring to follow (writer/docs).
gnidan
added a commit
that referenced
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Jul 13, 2026
A small leaf helper square(x) called from two sites with storage-read args. At O2/O3 both sites inline into the caller -> two virtual activations in the tracer (the inline showcase, as sum/factorial were for tailcall). Args are non-constant (storage reads) so L1 fold can't collapse the inlined bodies. Verified against bugc: correct result (3^2 + 4^2 = 25) at O0-O3; zero inline marks at O0/O1, both sites inlined at O2 (108 -> 50 runtime instrs) and O3. Prose + TraceExample wiring to follow (writer/docs).
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Adds the
inlineDemotracing example — a dedicated showcase for theinlinetransform, the waytailRecursiveSum/tailRecursiveFactorialshowcase
tailcall.The program
A leaf helper
square(x) -> x * xcalled from two sites:Args are storage reads (
a,b), not constants — so L1 fold can'tcollapse the inlined bodies, keeping the two virtual activations visible
in the tracer at O2/O3.
Verified against bugc (this branch)
3^2 + 4^2 = 25.runtime instructions) and O3.
target) / return contexts emitted per the format: spec the inlined-call virtual activation contract #229contract.
Scope of this PR
Data only — the
inlineDemoexport. Prose + the<TraceExample>blockin
tracing.mdxwill follow from writer/docs (coordinating placementwith the #227 Explore/trace-playground reorg).