llvm-project

5f777b2c - [dwarf] make dwarf fission compatible with RISCV relaxations 1/2 (#166597)

[dwarf] make dwarf fission compatible with RISCV relaxations 1/2 (#166597) Currently, -gsplit-dwarf and -mrelax are incompatible options in Clang. The issue is that .dwo files should not contain any relocations, as they are not processed by the linker. However, relaxable code emits relocations in DWARF for debug ranges that reside in the .dwo file when DWARF fission is enabled. This patch makes DWARF fission compatible with RISC-V relaxations. It uses the StartxEndx DWARF forms in .debug_rnglists.dwo, which allow referencing addresses from .debug_addr instead of using absolute addresses. This approach eliminates relocations from .dwo files.