fix[venom]: baseptr add/sub liveness

[harkal]

What I did

How I did it

How to verify it

Commit message

Propagates base pointers through add/sub. Add `slice`(`uint2str`) regression test

Description for the changelog

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[github-actions]

📊 Bytecode Size Changes (venom)

No changes detected.

Full bytecode sizes

Contract	legacy-O2	legacy-Os	-O2	-O3	-Os
curvefi/amm/stableswap/implementation/implementation_v_700.vy	24962	23769	19789	19578	17993
curvefi/legacy/CurveStableSwapMetaNG.vy	24952	23578	19424	19280	17689
curvefi/legacy/CurveStableSwapNG.vy	24473	23298	19252	19026	17473
curvefi/amm/stableswap/meta_implementation/meta_implementation_v_700.vy	23610	22805	18702	18366	17352
yearnfi/VaultV3.vy	19972	19063	16662	16464	14054
curvefi/amm/tricryptoswap/implementation/implementation_v_200.vy	20590	19825	16493	16238	15314
curvefi/amm/twocryptoswap/implementation/implementation_v_210.vy	18090	17350	14692	14442	13480
curvefi/legacy/CurveCryptoSwap2.vy	18947	18382	14468	14173	13532
yearnfi/VaultV2.vy	16676	15763	13303	13241	11954
curvefi/amm/stableswap/factory/factory_v_100.vy	14558	13978	12927	12370	11427
curvefi/gauge/child_gauge/implementation/implementation_v_110.vy	12338	11561	10016	9883	8985
curvefi/gauge/child_gauge/implementation/implementation_v_100.vy	12017	11249	9735	9602	8714
curvefi/amm/stableswap/views/views_v_120.vy	12784	12368	9596	9328	8750
curvefi/amm/tricryptoswap/math/math_v_200.vy	11055	10992	9226	8734	7964
curvefi/legacy/CurveCryptoMathOptimized3.vy	11054	10991	9225	8733	7964
curvefi/gauge/child_gauge/implementation/implementation_v_020.vy	10665	9947	8690	8514	7713
curvefi/registries/metaregistry/metaregistry_v_110.vy	7590	6732	6329	5858	5347
curvefi/amm/tricryptoswap/views/views_v_200.vy	7821	7776	6172	6031	5937
curvefi/helpers/stable_swap_meta_zap/stable_swap_meta_zap_v_100.vy	7302	7067	5920	5776	5454
curvefi/helpers/router/router_v_110.vy	6717	6717	5818	5478	5446
curvefi/amm/twocryptoswap/views/views_v_200.vy	6991	6946	5698	5570	5463
curvefi/registries/metaregistry/registry_handlers/stableswap/handler_v_110.vy	6633	6259	5661	5279	5216
curvefi/amm/twocryptoswap/factory/factory_v_200.vy	5540	5252	5267	4625	4221
curvefi/amm/twocryptoswap/math/math_v_210.vy	6666	6666	5221	5221	4647
curvefi/amm/tricryptoswap/factory/factory_v_200.vy	5246	5021	4831	4325	4083
curvefi/gauge/child_gauge/factory/factory_v_201.vy	4844	4547	3995	3977	3540
yearnfi/VaultFactory.vy	3765	3617	3917	2927	2936
curvefi/registries/metaregistry/registry_handlers/tricryptoswap/handler_v_110.vy	4241	3939	3577	3300	3203
curvefi/registries/metaregistry/registry_handlers/twocryptoswap/handler_v_110.vy	4186	3884	3464	3199	3065
curvefi/gauge/child_gauge/factory/factory_v_100.vy	4183	3914	3354	3336	2963
curvefi/registries/address_provider/address_provider_v_201.vy	2973	2782	2652	2645	2365
curvefi/helpers/rate_provider/rate_provider_v_101.vy	3260	3260	2469	2447	2290
curvefi/amm/stableswap/math/math_v_100.vy	3067	3046	2442	2441	2298
curvefi/helpers/rate_provider/rate_provider_v_100.vy	2847	2841	2354	2346	2093
curvefi/helpers/deposit_and_stake_zap/deposit_and_stake_zap_v_100.vy	2322	2316	2036	2007	1799
curvefi/governance/relayer/taiko/relayer_v_001.vy	2068	2064	1795	1788	1669
curvefi/governance/relayer/polygon_cdk/relayer_v_101.vy	1556	1523	1460	1453	1323
curvefi/governance/relayer/arb_orbit/relayer_v_101.vy	1266	1262	1172	1158	1093
curvefi/governance/relayer/op_stack/relayer_v_101.vy	1186	1182	1109	1098	1030
curvefi/governance/relayer/not_rollup/relayer_v_100.vy	1168	1153	1103	1098	1012
curvefi/governance/vault/vault_v_100.vy	964	941	893	893	824
curvefi/governance/agent/agent_v_100.vy	541	541	517	517	463
curvefi/governance/agent/agent_v_101.vy	541	541	517	517	463
curvefi/governance/relayer/relayer_v_100.vy	496	496	465	460	465

[codecov]

Codecov Report

❌ Patch coverage is 76.47059% with 4 lines in your changes missing coverage. Please review.
✅ Project coverage is 92.92%. Comparing base (54cb28e) to head (1780eae).

Files with missing lines	Patch %	Lines
vyper/venom/analysis/base_ptr_analysis.py	76.47%	2 Missing and 2 partials ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #4853      +/-   ##
==========================================
- Coverage   92.93%   92.92%   -0.02%     
==========================================
  Files         157      157              
  Lines       21960    21977      +17     
  Branches     3930     3937       +7     
==========================================
+ Hits        20409    20422      +13     
- Misses       1026     1028       +2     
- Partials      525      527       +2     

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