Import FreeRTOS platform experiment codes for further development#451

Merged

wenyongh merged 18 commits intobytecodealliance:mainfrom

Nov 26, 2020

Commits on Oct 30, 2020

Commits on Nov 5, 2020

Commits on Nov 20, 2020

Add more llvm optimization passes to improve AOT performance
wenyongh
committed

Commits on Nov 23, 2020

Merge pull request #189 from bytecodealliance/main
wenyongh
authored

Commits on Nov 24, 2020

Commits on Nov 26, 2020

Import freertos platform codes for experiment
wenyongh
committed