rust/compiler/rustc_codegen_llvm
Patrick Walton c41fd760db rustc_codegen_llvm: Give each codegen unit a unique DWARF name on all
platforms, not just Apple ones.

To avoid breaking split DWARF, we need to ensure that each codegen unit has a
unique `DW_AT_name`. This is because there's a remote chance that different
codegen units for the same module will have entirely identical DWARF entries
for the purpose of the DWO ID, which would violate Appendix F ("Split Dwarf
Object Files") of the DWARF 5 specification. LLVM uses the algorithm specified
in section 7.32 "Type Signature Computation" to compute the DWO ID, which does
not include any fields that would distinguish compilation units. So we must
embed the codegen unit name into the `DW_AT_name`.

Closes #88521.
2021-12-16 20:40:04 -08:00
..
src rustc_codegen_llvm: Give each codegen unit a unique DWARF name on all 2021-12-16 20:40:04 -08:00
Cargo.toml Auto merge of #90716 - euclio:libloading, r=cjgillot 2021-12-12 17:28:52 +00:00
README.md mv compiler to compiler/ 2020-08-30 18:45:07 +03:00

The codegen crate contains the code to convert from MIR into LLVM IR, and then from LLVM IR into machine code. In general it contains code that runs towards the end of the compilation process.

For more information about how codegen works, see the rustc dev guide.