mirror of
https://github.com/pezkuwichain/wasm-instrument.git
synced 2026-04-22 02:07:58 +00:00
Sasha Gryaznov
a4dde28607
* fix misprints in doc comments * added global gas tracker variable and local gas fn * all exported functions of the module to accept a new param and to set the gas_left global to its value at their very start * make module support both gas metering methods * tests fixed for the old metering method * better naming * MutableGlobal metering method implemented, tests for the old method pass * gas_metering::tests updated and pass * all tests udpdated and pass * emacs backup files to .gitignore * docs updated * clippy fix * iff = if and only if * more clippy * docs misprints fixes * refactored to have Backend trait and two implementations in separate sub-modules * docs updated * fixed old benches (updating them is coming next) * added bench for an instrumented wasm-coremark * updated benches: added them for both gas_metering instrumentations * benches contest first ver * added debug prints to the bench * refactored to better fit frontend-backend pattern * docs update * updated benches * design updated on feedback * re-structured sub-modules re-structured sub-modules & updated docs * docs improved * addressed latest feedback comments * re-writed the local gas function * coremark benches show ~20% performance improvement * fix ci: test + clippy * save before re-factoring prepare_in_wasm() * bare_call_16 shows 16% worse perf * + fibonacci recursive bench * refactored benchmarks * + factorial recursive bench * benches on wasmi fixtures show no perf improvement, coremark runs ~20% faster being instrumented with mutable_global gas metering * charge gas for local gas func isntructions execution * replaced benchmark which requires multi_value feature * save: optimized gas func a bit (benches work, fixture tests fail) * 1033% overhead on many_blocks.wasm when mut_global gas_metering together with stack_height * size overhead test for both gas metering methods + stack limiter * added more benches * improved print_size_overhead test * test for comparing size overheads of two gas_metering injectors * before optimization: benches + size overhead * optimization try-1: inline part of gas func instructions: +benches +size overheads * optimization try-2: inline hot path of gas fn: +benches +size overheads * opt try-3: count for gas fn cost on the caller side: +benches +size overhead * revert to initial version but with static gas fn cost on the caller side: +benches +sizes * tests fixed * use newest wasmi 0.20: +benches +docs updated * use if-else block instead of Return: +benches * fix tests * clippy fix * addressed review comments * Update changelog Co-authored-by: Alexander Theißen <alex.theissen@me.com>
48 lines
1.4 KiB
WebAssembly Text Format
48 lines
1.4 KiB
WebAssembly Text Format
(module
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(func $fib_recursive (export "fib_recursive") (param $N i64) (result i64)
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(if
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(i64.le_s (local.get $N) (i64.const 1))
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(then (return (local.get $N)))
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)
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(return
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(i64.add
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(call $fib_recursive
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(i64.sub (local.get $N) (i64.const 1))
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)
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(call $fib_recursive
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(i64.sub (local.get $N) (i64.const 2))
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)
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)
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)
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)
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(func $fib_iterative (export "fib_iterative") (param $N i64) (result i64)
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(local $n1 i64)
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(local $n2 i64)
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(local $tmp i64)
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(local $i i64)
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;; return $N for N <= 1
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(if
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(i64.le_s (local.get $N) (i64.const 1))
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(then (return (local.get $N)))
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)
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(local.set $n1 (i64.const 1))
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(local.set $n2 (i64.const 1))
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(local.set $i (i64.const 2))
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;;since we normally return n2, handle n=1 case specially
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(loop $again
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(if
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(i64.lt_s (local.get $i) (local.get $N))
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(then
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(local.set $tmp (i64.add (local.get $n1) (local.get $n2)))
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(local.set $n1 (local.get $n2))
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(local.set $n2 (local.get $tmp))
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(local.set $i (i64.add (local.get $i) (i64.const 1)))
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(br $again)
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)
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)
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)
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(local.get $n2)
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)
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)
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