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eager: apply out of line - #59
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Inlined into runner.cpp's parse_dag_into, apply()'s step loop reloads the arena and the stack on every step. Out of line it takes 2.2-5.6% fewer instructions: loading the compiler 148.0M -> 139.7M, compiling compiler.lamb 828.0M -> 782.2M. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_018ffv5AybPTpV56D5vuayQr
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This PR adds one attribute:
[[gnu::noinline]]onBasicEagerGraphNilMmap32::apply. Whenapplyis inlined intorunner.cpp'sparse_dag_into, the step loop reloads the arena and the stack on every step.Cachegrind instruction counts against main (16dfe07, jets on):
With
RUNNER_JETS=0, compiling compiler.lamb goes from 837.1M to 790.4M instructions (−5.6%).Steps and output are unchanged.
test.shpasses underCandC.UTF-8(runner 21, reduce 4).🤖 Generated with Claude Code
https://claude.ai/code/session_018ffv5AybPTpV56D5vuayQr