Rollup of 5 pull requests#59561

Merged

bors merged 15 commits intorust-lang:masterfrom

Mar 30, 2019

Commits on Mar 23, 2019

Fix invalid DWARF for enums when using thinlto
philipc
committed

Commits on Mar 28, 2019

Revise test slightly so that `dyn` in macro invocation *must* be parsed as keyword in test.
pnkfelix
committed
Revise and generalize the macros-unlinted tests.
pnkfelix
committed

Commits on Mar 29, 2019

rustc(codegen): uncache `def_symbol_name` prefix from `symbol_name`.
eddyb
committed

Commits on Mar 30, 2019