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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.

llvm-svn: 256516
This commit is contained in:
Eric Christopher 2015-12-28 19:58:44 +00:00
parent 8562493f6a
commit 3cb592d6b6
3 changed files with 6 additions and 1 deletions
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2
clang/include/clang/Driver/Options.td
View File

@ -1164,6 +1164,8 @@ def gdwarf_3 : Flag<["-"], "gdwarf-3">, Group<g_Group>,
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]>;

3
clang/lib/Driver/Tools.cpp
View File

@ -2505,6 +2505,7 @@ static unsigned DwarfVersionNum(StringRef ArgValue) {
.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, const JobAction &JA,
// 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.

2
clang/test/CodeGen/dwarf-version.c
View File

@ -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}