Allow local.set optimization with active preservation

[Robbepop]

Closes #765

[paritytech-cicd-pr]

BENCHMARKS

	NATIVE			WASMTIME
BENCHMARK	MASTER	PR	DIFF	MASTER	PR	DIFF	WASMTIME OVERHEAD
execute/ bare_call_0	1.57ms	1.63ms	🔴 3.49%	1.19ms	1.12ms	🔴 -5.44%	🟢 -31%
execute/ bare_call_0/typed	1.16ms	1.18ms	⚪ 1.43%	799.96µs	872.29µs	🔴 9.13%	🟢 -26%
execute/ bare_call_1	1.61ms	1.70ms	🔴 6.36%	1.27ms	1.26ms	🔴 -3.10%	🟢 -26%
execute/ bare_call_16	2.46ms	2.53ms	🔴 2.78%	3.40ms	3.55ms	🔴 4.37%	🟢 41%
execute/ bare_call_16/typed	1.57ms	1.73ms	🔴 10.14%	1.89ms	1.94ms	🔴 2.68%	🟢 13%
execute/ bare_call_1/typed	1.26ms	1.28ms	🔴 1.68%	986.37µs	991.58µs	⚪ 0.57%	🟢 -22%
execute/ bare_call_4	1.84ms	1.83ms	🔴 -0.43%	1.71ms	1.65ms	🔴 -3.04%	🟢 -10%
execute/ bare_call_4/typed	1.21ms	1.31ms	🔴 8.18%	1.04ms	1.10ms	🔴 5.23%	🟢 -16%
execute/ br_table	1.36ms	1.39ms	🔴 1.81%	1.15ms	1.15ms	⚪ 0.06%	🟢 -17%
execute/ count_until	546.68µs	546.45µs	⚪ -0.08%	1.75ms	1.70ms	🟢 -3.11%	🔴 211%
execute/ factorial_iterative	365.34µs	323.28µs	🟢 -11.50%	802.76µs	807.45µs	⚪ 0.69%	🔴 150%
execute/ factorial_recursive	497.30µs	492.44µs	⚪ -1.01%	970.26µs	967.54µs	⚪ -0.33%	🟡 96%
execute/ fibonacci_iter	1.40ms	1.40ms	⚪ -0.20%	3.85ms	3.81ms	⚪ -0.95%	🔴 173%
execute/ fibonacci_rec	3.97ms	3.96ms	⚪ -0.20%	8.50ms	8.60ms	🔴 1.16%	🔴 117%
execute/ fibonacci_tail	859.42µs	939.40µs	🔴 9.35%	2.18ms	2.20ms	⚪ 0.93%	🔴 134%
execute/ global_bump	740.93µs	747.95µs	⚪ 0.99%	2.20ms	2.18ms	⚪ -0.77%	🔴 192%
execute/ global_const	660.98µs	659.30µs	⚪ -0.22%	2.39ms	2.45ms	🔴 1.78%	🔴 271%
execute/ host_calls	36.81µs	36.90µs	⚪ 0.72%	39.35µs	39.84µs	⚪ 1.12%	🟢 8%
execute/ memory_fill	1.21ms	1.15ms	🟢 -5.37%	3.29ms	3.32ms	⚪ 0.83%	🔴 189%
execute/ memory_sum	1.18ms	1.14ms	🟢 -3.98%	3.29ms	3.29ms	⚪ 0.10%	🔴 189%
execute/ memory_vec_add	2.34ms	2.35ms	⚪ 0.08%	7.35ms	7.39ms	⚪ 0.37%	🔴 215%
execute/ recursive_is_even	660.86µs	665.30µs	⚪ 1.11%	1.47ms	1.45ms	🟢 -1.62%	🔴 117%
execute/ recursive_ok	94.58µs	94.46µs	⚪ -0.19%	200.19µs	200.00µs	⚪ -0.21%	🔴 112%
execute/ recursive_scan	129.77µs	129.22µs	⚪ -0.40%	287.08µs	284.63µs	⚪ -0.72%	🔴 120%
execute/ recursive_trap	8.91µs	9.42µs	⚪ 4.74%	20.96µs	20.86µs	⚪ -0.40%	🔴 121%
execute/ regex_redux	456.02µs	507.09µs	🔴 11.14%	1.23ms	1.24ms	⚪ 0.92%	🔴 144%
execute/ rev_complement	430.99µs	422.41µs	🟢 -2.04%	1.15ms	1.15ms	⚪ -0.49%	🔴 171%
execute/ tiny_keccak	329.11µs	332.54µs	⚪ 0.31%	1.10ms	1.12ms	🔴 2.36%	🔴 238%
execute/ trunc_f2i	732.13µs	737.25µs	⚪ 0.72%	1.71ms	1.71ms	⚪ 0.18%	🔴 132%
instantiate/ wasm_kernel	52.58µs	55.78µs	⚪ 3.15%	58.23µs	55.31µs	🟢 -3.73%	🟢 -1%
translate/ erc1155	207.67µs	208.61µs	⚪ 0.93%	374.00µs	372.52µs	⚪ -0.24%	🟡 79%
translate/ erc20	103.60µs	105.15µs	🔴 1.55%	179.85µs	180.79µs	⚪ 0.38%	🟡 72%
translate/ erc721	147.25µs	146.77µs	⚪ -0.35%	261.04µs	260.51µs	⚪ 0.49%	🟡 77%
translate/ spidermonkey	64.42ms	64.45ms	⚪ 0.06%	0.00ns	0.00ns	⚪ -0.73%	🟢 -100%
translate/ wasm_kernel	4.26ms	4.22ms	⚪ -0.80%	6.75ms	6.73ms	⚪ -0.02%	🟡 60%

Link to pipeline