svn commit: r263892 - head/contrib/llvm/patches

[Dimitry Andric]

Author: dim
Date: Sat Mar 29 00:48:50 2014
New Revision: 263892
URL: http://svnweb.freebsd.org/changeset/base/263892

Log:
  Add the llvm/clang patch for r263891.

Added:
  head/contrib/llvm/patches/patch-r263891-dwarf2-freebsd10.diff

Added: head/contrib/llvm/patches/patch-r263891-dwarf2-freebsd10.diff
==============================================================================
--- /dev/null	00:00:00 1970	(empty, because file is newly added)
+++ head/contrib/llvm/patches/patch-r263891-dwarf2-freebsd10.diff	Sat Mar 29 00:48:50 2014	(r263892)
@@ -0,0 +1,22 @@
+This patch makes clang default to DWARF2 debug info format for FreeBSD
+10.x and earlier.
+
+Introduced here: http://svnweb.freebsd.org/changeset/base/263891
+
+Index: tools/clang/lib/Driver/Tools.cpp
+===================================================================
+--- tools/clang/lib/Driver/Tools.cpp
++++ tools/clang/lib/Driver/Tools.cpp
+@@ -2628,8 +2628,10 @@ void Clang::ConstructJob(Compilation &C, const Job
+       CmdArgs.push_back("-gdwarf-4");
+     else if (!A->getOption().matches(options::OPT_g0) &&
+              !A->getOption().matches(options::OPT_ggdb0)) {
+-      // Default is dwarf-2 for darwin.
+-      if (getToolChain().getTriple().isOSDarwin())
++      // Default is dwarf-2 for darwin and FreeBSD <= 10.
++      const llvm::Triple &Triple = getToolChain().getTriple();
++      if (Triple.isOSDarwin() || (Triple.getOS() == llvm::Triple::FreeBSD &&
++          Triple.getOSMajorVersion() <= 10))
+         CmdArgs.push_back("-gdwarf-2");
+       else
+         CmdArgs.push_back("-g");