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2020 May 08
4
[Debuginfo][DWARF][LLD] Remove obsolete debug info in lld.
Folks, we work on optimization of binary size and improvement of debug info quality.
To reduce the size of the binary we use -ffunction-sections so that unused code would be garbage collected.
When the linker does garbage collection, a lot of abandoned debug info is left behind.
Besides inflated debug info size, we ended up with overlapping address ranges and no way to say valid vs garbage