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[DWARF] Preserve column number when emitting 'line 0' record

Authored by probinson on Dec 13 2016, 4:27 PM.

Description

[DWARF] Preserve column number when emitting 'line 0' record

Follow-up to r289256, address a FIXME to avoid resetting the column
number. This reduced .debug_line by 2.6% in a RelWithDebInfo
self-build of clang.

llvm-svn: 289620

Details

Committed
probinsonDec 13 2016, 4:27 PM
Parents
rGf6b069c7db5f: [llvm] Iterate SmallPtrSet in reverse order to uncover non-determinism in…
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