[lang] Nuke IntegerOffsetStmt and add annotations to alias_analysis #18912

Job	Run time
Show Environment Variables	9s
Check files	7s
Build and Test macos (CPU) (macos-10.15, 3.7, ON, cpu,vulkan)	7m 4s
Build and Test (manylinux2014)	12m 11s
Build and Test (Apple M1) (macos-latest, 3.8)	16m 31s
Build and Test (AMDGPU)	9m 8s
Build and Test (GPU) (sm70, driver470)	14m 38s
Build and Test (GPU) (sm70, driver510)	12m 42s
Check Static Analyzer	16m 18s
AOT Build and Test Android Unity Examples	7m 24s
Build and Test (GPU) (not sm70, driver470)	54m 22s
Build and Test Windows (sm70)	28m 28s
Build and Test (GPU) (not sm70, driver510)	54m 49s
Build and Test Windows (not sm70)	39m 42s
AOT Build and Test (GPU) (self-hosted, cuda, vulkan, cn, driver470)	4m 40s
Build and Test (Docs)	1m 35s
AOT Build and Test (GPU) (self-hosted, cuda, vulkan, cn, driver510)	43s
Build iOS C-API Static Library	4m 27s
AOT Build and Test Android Headless Demos	6m 26s
AOT Build and Test Android Apps	8m 2s
	4h 59m 26s

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