d08bab99b7
Rework the way symbols are handled in DWARF line table generation to eliminate copying the data payload for all SWDWARFLINES syms (emitted by the compiler) into the payload of the ".debug_line" section symbol (generated by the linker). Instead, chain together the SWDWARFLINES symbols into a list, then append that list to the section sym list in dwarfp (this moves us from a single monolithic .debug_line to a .debug_line section sym followed by a list symbols (one per function and an epilog symbol per compilation unit). To enable this work, move the emission of the DW_LNE_set_address op (at the start of each function) from the linker to the compiler. Change-Id: Iec61b44a451f7a386c82a89bf944de482b018789 Reviewed-on: https://go-review.googlesource.com/c/go/+/237427 Reviewed-by: Cherry Zhang <cherryyz@google.com> Reviewed-by: Jeremy Faller <jeremy@golang.org>
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