[compiler-rt] r326141 - Re-land "Emit proper CodeView when -gcodeview is passed without the cl driver."

[Reid Kleckner via llvm-commits]

Author: rnk
Date: Mon Feb 26 14:55:33 2018
New Revision: 326141

URL: http://llvm.org/viewvc/llvm-project?rev=326141&view=rev
Log:
Re-land "Emit proper CodeView when -gcodeview is passed without the cl driver."

Reverts r326116 and re-lands r326113 with a fix to ASan so that it
enables column info in its test suite.

Modified:
    compiler-rt/trunk/test/lit.common.cfg

Modified: compiler-rt/trunk/test/lit.common.cfg
URL: http://llvm.org/viewvc/llvm-project/compiler-rt/trunk/test/lit.common.cfg?rev=326141&r1=326140&r2=326141&view=diff
==============================================================================
--- compiler-rt/trunk/test/lit.common.cfg (original)
+++ compiler-rt/trunk/test/lit.common.cfg Mon Feb 26 14:55:33 2018
@@ -37,7 +37,11 @@ if compiler_id == "Clang":
   # reports and stack traces even with minimal debug info.
   config.debug_info_flags = ["-gline-tables-only"]
   if platform.system() == 'Windows':
+    # On Windows, use CodeView with column info instead of DWARF. Both VS and
+    # windbg do not behave well when column info is enabled, but users have
+    # requested it because it makes ASan reports more precise.
     config.debug_info_flags.append("-gcodeview")
+    config.debug_info_flags.append("-gcolumn-info")
 elif compiler_id == 'GNU':
   config.cxx_mode_flags = ["-x c++"]
   config.debug_info_flags = ["-g"]