tree 1319940664b341b3fa0e2c4a7c3a6b8a6a8a904f
parent 537d5ac5416082f416c1b2f59d8f231f6f77f586
author Zachary Turner <zturner@google.com> 1539280915 +0000
committer Zachary Turner <zturner@google.com> 1539280915 +0000

Better support for POSIX paths in PDBs.

While it doesn't make a *ton* of sense for POSIX paths to be
in PDBs, it's possible to occur in real scenarios involving
cross compilation.

The tools need to be able to handle this, because certain types
of debugging scenarios are possible without a running process
and so don't necessarily require you to be on a Windows system.
These include post-mortem debugging and binary forensics (e.g.
using a debugger to disassemble functions and examine symbols
without running the process).

There's changes in clang, LLD, and lldb in this patch.  After
this the cross-platform disassembly and source-list tests pass
on Linux.

Furthermore, the behavior of LLD can now be summarized by a much
simpler rule than before: Unless you specify /pdbsourcepath and
/pdbaltpath, the PDB ends up with paths that are valid within
the context of the machine that the link is performed on.

Differential Revision: https://reviews.llvm.org/D53149

git-svn-id: https://llvm.org/svn/llvm-project/lld/trunk@344269 91177308-0d34-0410-b5e6-96231b3b80d8