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Author SHA1 Message Date
Peter Collingbourne d4135bbc30 DebugInfo: New metadata representation for global variables. 
This patch reverses the edge from DIGlobalVariable to GlobalVariable.
This will allow us to more easily preserve debug info metadata when
manipulating global variables.

Fixes PR30362. A program for upgrading test cases is attached to that
bug.

Differential Revision: http://reviews.llvm.org/D20147

llvm-svn: 281284
 2016-09-13 01:12:59 +00:00
David Majnemer a54fe1acdc [CodeView] Implement support for thread-local variables 
llvm-svn: 274734
 2016-07-07 05:14:21 +00:00
David Majnemer 7abd269aa9 [CodeView] Emit an appropriate symbol kind for globals 
We emitted debug info for globals/functions as if they all had external
linkage.  Instead, emit local symbol records when appropriate.

llvm-svn: 274676
 2016-07-06 21:07:47 +00:00
Reid Kleckner 6f3406df67 Re-land "[codeview] Emit information about global variables" 
This reverts commit r271962 and reinstantes r271957.

MSVC's linker doesn't appear to like it if you have an empty symbol
substream, so only open a symbol substream if we're going to emit
something about globals into it.

Makes check-asan pass.

llvm-svn: 271965
 2016-06-07 00:02:03 +00:00
Reid Kleckner e8a236fc2e Revert "[codeview] Emit information about global variables" 
This reverts commit r271957, it broke check-asan on Windows.

llvm-svn: 271962
 2016-06-06 23:41:38 +00:00
Reid Kleckner 87eddf723d [codeview] Emit information about global variables 
This currently emits everything as S_GDATA32, which isn't right for
things like thread locals, but it's a start.

llvm-svn: 271957
 2016-06-06 23:23:47 +00:00