rustc_codegen_ssa: use bitcasts instead of type punning for scalar transmutes.#79801

Merged

bors merged 3 commits intorust-lang:masterfrom

eddyb:scalar-transmute

Dec 10, 2020

Commits on Dec 7, 2020

rustc_codegen_ssa: use bitcasts instead of type punning for scalar transmutes.
eddyb
committed

Commits on Dec 9, 2020

tests: add 3 cases involving pointers to codegen/transmute-scalar.
eddyb
committed

Commits on Dec 10, 2020

tests: codegen/transmute-scalar needs optimizations enabled.
eddyb
committed