Fixed coverage map issues; better aligned with LLVM APIs#74733

Merged

bors merged 4 commits intorust-lang:masterfrom richkadel:llvm-coverage-map-gen-5

Jul 29, 2020

Commits on Jul 25, 2020

Fixed coverage map issues; better aligned with LLVM APIs
richkadel
committed

Commits on Jul 28, 2020

Refactor MIR coverage instrumentation
richkadel
committed

Commits on Jul 29, 2020

FunctionCoverage: improve type checking with newtype_index types
richkadel
committed
Moved structs/enums with repr(C) to LLVM types into ffi.rs crates
richkadel
committed