Make `librustc_codegen_llvm` aware of LLVM address spaces.#51576

Closed

DiamondLovesYou wants to merge 3 commits intorust-lang:masterfrom

DiamondLovesYou:rustc-trans-addr-space

Commits on Jan 21, 2019

Make `librustc_codegen_llvm` aware of LLVM address spaces.
DiamondLovesYou
committed
Support Harvard architectures.
DiamondLovesYou
committed
LLVM value address space optimizations: leave values in their original address space where possible.
DiamondLovesYou
committed