r256516 - We check for dwarf 5 in the backend, so go ahead and pass it along via

[Eric Christopher via cfe-commits]

Author: echristo
Date: Mon Dec 28 13:58:44 2015
New Revision: 256516

URL: http://llvm.org/viewvc/llvm-project?rev=256516&view=rev
Log:
We check for dwarf 5 in the backend, so go ahead and pass it along via
the front end as well.

Note that DWARF5 isn't finalized and any feature support is subject to
change and accepting of the option doesn't mean we're supporting the
full range of the current standard.

Modified:
    cfe/trunk/include/clang/Driver/Options.td
    cfe/trunk/lib/Driver/Tools.cpp
    cfe/trunk/test/CodeGen/dwarf-version.c

Modified: cfe/trunk/include/clang/Driver/Options.td
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/include/clang/Driver/Options.td?rev=256516&r1=256515&r2=256516&view=diff
==============================================================================
--- cfe/trunk/include/clang/Driver/Options.td (original)
+++ cfe/trunk/include/clang/Driver/Options.td Mon Dec 28 13:58:44 2015
@@ -1164,6 +1164,8 @@ def gdwarf_3 : Flag<["-"], "gdwarf-3">,
   HelpText<"Generate source-level debug information with dwarf version 3">;
 def gdwarf_4 : Flag<["-"], "gdwarf-4">, Group<g_Group>,
   HelpText<"Generate source-level debug information with dwarf version 4">;
+def gdwarf_5 : Flag<["-"], "gdwarf-5">, Group<g_Group>,
+  HelpText<"Generate source-level debug information with dwarf version 5">;
 def gcodeview : Flag<["-"], "gcodeview">,
   HelpText<"Generate CodeView debug information">,
   Flags<[CC1Option, CC1AsOption, CoreOption]>;

Modified: cfe/trunk/lib/Driver/Tools.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Driver/Tools.cpp?rev=256516&r1=256515&r2=256516&view=diff
==============================================================================
--- cfe/trunk/lib/Driver/Tools.cpp (original)
+++ cfe/trunk/lib/Driver/Tools.cpp Mon Dec 28 13:58:44 2015
@@ -2505,6 +2505,7 @@ static unsigned DwarfVersionNum(StringRe
       .Case("-gdwarf-2", 2)
       .Case("-gdwarf-3", 3)
       .Case("-gdwarf-4", 4)
+      .Case("-gdwarf-5", 5)
       .Default(0);
 }
 
@@ -4098,7 +4099,7 @@ void Clang::ConstructJob(Compilation &C,
 
   // If a -gdwarf argument appeared, remember it.
   if (Arg *A = Args.getLastArg(options::OPT_gdwarf_2, options::OPT_gdwarf_3,
-                               options::OPT_gdwarf_4))
+                               options::OPT_gdwarf_4, options::OPT_gdwarf_5))
     DwarfVersion = DwarfVersionNum(A->getSpelling());
 
   // Forward -gcodeview.

Modified: cfe/trunk/test/CodeGen/dwarf-version.c
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/CodeGen/dwarf-version.c?rev=256516&r1=256515&r2=256516&view=diff
==============================================================================
--- cfe/trunk/test/CodeGen/dwarf-version.c (original)
+++ cfe/trunk/test/CodeGen/dwarf-version.c Mon Dec 28 13:58:44 2015
@@ -1,6 +1,7 @@
 // RUN: %clang -target x86_64-linux-gnu -gdwarf-2 -S -emit-llvm -o - %s | FileCheck %s --check-prefix=VER2
 // RUN: %clang -target x86_64-linux-gnu -gdwarf-3 -S -emit-llvm -o - %s | FileCheck %s --check-prefix=VER3
 // RUN: %clang -target x86_64-linux-gnu -gdwarf-4 -S -emit-llvm -o - %s | FileCheck %s --check-prefix=VER4
+// RUN: %clang -target x86_64-linux-gnu -gdwarf-5 -S -emit-llvm -o - %s | FileCheck %s --check-prefix=VER5
 // RUN: %clang -target x86_64-linux-gnu -g -S -emit-llvm -o - %s | FileCheck %s --check-prefix=VER4
 // RUN: %clang -target x86_64-linux-gnu -gdwarf -S -emit-llvm -o - %s | FileCheck %s --check-prefix=VER4
 // RUN: %clang -target x86_64-apple-darwin -g -S -emit-llvm -o - %s | FileCheck %s --check-prefix=VER2
@@ -18,6 +19,7 @@ int main (void) {
 // VER2: !{i32 2, !"Dwarf Version", i32 2}
 // VER3: !{i32 2, !"Dwarf Version", i32 3}
 // VER4: !{i32 2, !"Dwarf Version", i32 4}
+// VER5: !{i32 2, !"Dwarf Version", i32 5}
 
 // NODWARF-NOT: !"Dwarf Version"
 // CODEVIEW: !{i32 2, !"CodeView", i32 1}