Shubham Sandeep Rastogi e734a12b60 Emit DW_LLE_base_address + DW_LLE_offset_pair for DWARF v5 ...

This patch tries to reduce the size of the debug_loclist section by
replacing the DW_LLE_start_length opcodes currently emitted by dsymutil
in favor of using DW_LLE_base_address + DW_LLE_offset_pair instead.

The DW_LLE_start_length is one AddressSize followed by a ULEB per entry,
whereas, the DW_LLE_base_address + DW_LLE_offset_pair will use one
AddressSize for the base address, and then the DW_LLE_offset_pair is a
pair of ULEBs. This will be more efficient where a loclist fragment has
many entries.

Differential Revision: https://reviews.llvm.org/D153080

2023-06-21 12:43:29 -07:00

46 KiB

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