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>
59 lines
2.0 KiB
WebAssembly Text Format
59 lines
2.0 KiB
WebAssembly Text Format
;; Exports a function `vec_add` that computes the addition of 2 vectors
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;; of length `len` starting at `ptr_a` and `ptr_b` and stores the result
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;; into a buffer of the same length starting at `ptr_result`.
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(module
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(memory (export "mem") 1)
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(func (export "vec_add")
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(param $ptr_result i32)
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(param $ptr_a i32)
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(param $ptr_b i32)
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(param $len i32)
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(local $n i32)
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(block $exit
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(loop $loop
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(br_if ;; exit loop if $n == $len
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$exit
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(i32.eq
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(local.get $n)
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(local.get $len)
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)
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)
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(i64.store offset=0 ;; ptr_result[n] = ptr_a[n] + ptr_b[n]
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(i32.add
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(local.get $ptr_result)
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(i32.mul
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(local.get $n)
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(i32.const 8)
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)
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)
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(i64.add
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(i64.load32_s offset=0 ;; load ptr_a[n]
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(i32.add
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(local.get $ptr_a)
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(i32.mul
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(local.get $n)
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(i32.const 4)
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)
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)
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)
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(i64.load32_s offset=0 ;; load ptr_b[n]
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(i32.add
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(local.get $ptr_b)
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(i32.mul
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(local.get $n)
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(i32.const 4)
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)
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)
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)
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)
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)
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(local.set $n ;; increment n
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(i32.add (local.get $n) (i32.const 1))
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)
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(br $loop) ;; continue loop
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)
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)
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(return)
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)
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)
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