r256104 - Driver part of debugger tuning.
Paul Robinson via cfe-commits
cfe-commits at lists.llvm.org
Sat Dec 19 11:41:48 PST 2015
Author: probinson
Date: Sat Dec 19 13:41:48 2015
New Revision: 256104
URL: http://llvm.org/viewvc/llvm-project?rev=256104&view=rev
Log:
Driver part of debugger tuning.
Adds driver options named -glldb and -gsce to mean -g plus tuning for
lldb and SCE debuggers respectively; the existing -ggdb option does
the same for gdb. Existing options -ggdb0, -ggdb1 etc. unpack into
-ggdb -g<N>. (There will not be -glldb<N> or -gsce<N> options.) The
tuning gets a target-specific default in the driver, and is passed
into cc1 with the new -debugger-tuning option.
As fallout, fixes where '-gsplit-dwarf -g0' would ignore the -g0 part
on Linux.
Differential Revision: http://reviews.llvm.org/D15651
Modified:
cfe/trunk/docs/UsersManual.rst
cfe/trunk/include/clang/Driver/Options.td
cfe/trunk/include/clang/Driver/ToolChain.h
cfe/trunk/lib/Driver/ToolChains.h
cfe/trunk/lib/Driver/Tools.cpp
cfe/trunk/test/Driver/debug-options.c
cfe/trunk/test/Driver/split-debug.c
Modified: cfe/trunk/docs/UsersManual.rst
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/docs/UsersManual.rst?rev=256104&r1=256103&r2=256104&view=diff
==============================================================================
--- cfe/trunk/docs/UsersManual.rst (original)
+++ cfe/trunk/docs/UsersManual.rst Sat Dec 19 13:41:48 2015
@@ -1514,8 +1514,11 @@ In these cases, you can use the flag ``-
Note that these flags should appear after the corresponding profile
flags to have an effect.
+Controlling Debug Information
+-----------------------------
+
Controlling Size of Debug Information
--------------------------------------
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Debug info kind generated by Clang can be set by one of the flags listed
below. If multiple flags are present, the last one is used.
@@ -1559,6 +1562,21 @@ below. If multiple flags are present, th
Generate complete debug info.
+Controlling Debugger "Tuning"
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+While Clang generally emits standard DWARF debug info (http://dwarfstd.org),
+different debuggers may know how to take advantage of different specific DWARF
+features. You can "tune" the debug info for one of several different debuggers.
+
+.. option:: -ggdb, -glldb, -gsce
+
+ Tune the debug info for the ``gdb``, ``lldb``, or Sony Computer Entertainment
+ debugger, respectively. Each of these options implies **-g**. (Therefore, if
+ you want both **-gline-tables-only** and debugger tuning, the tuning option
+ must come first.)
+
+
Comment Parsing Options
-----------------------
Modified: cfe/trunk/include/clang/Driver/Options.td
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/include/clang/Driver/Options.td?rev=256104&r1=256103&r2=256104&view=diff
==============================================================================
--- cfe/trunk/include/clang/Driver/Options.td (original)
+++ cfe/trunk/include/clang/Driver/Options.td Sat Dec 19 13:41:48 2015
@@ -71,6 +71,9 @@ def d_Group : OptionGroup<
def f_Group : OptionGroup<"<f group>">, Group<CompileOnly_Group>;
def f_clang_Group : OptionGroup<"<f (clang-only) group>">, Group<CompileOnly_Group>;
def g_Group : OptionGroup<"<g group>">;
+def gN_Group : OptionGroup<"<gN group>">, Group<g_Group>;
+def ggdbN_Group : OptionGroup<"<ggdbN group>">, Group<gN_Group>;
+def gTune_Group : OptionGroup<"<gTune group>">, Group<g_Group>;
def g_flags_Group : OptionGroup<"<g flags group>">;
def i_Group : OptionGroup<"<i group>">, Group<CompileOnly_Group>;
def clang_i_Group : OptionGroup<"<clang i group>">, Group<i_Group>;
@@ -1130,20 +1133,20 @@ def fdebug_prefix_map_EQ
HelpText<"remap file source paths in debug info">;
def g_Flag : Flag<["-"], "g">, Group<g_Group>,
HelpText<"Generate source-level debug information">;
-def gline_tables_only : Flag<["-"], "gline-tables-only">, Group<g_Group>,
+def gline_tables_only : Flag<["-"], "gline-tables-only">, Group<gN_Group>,
HelpText<"Emit debug line number tables only">;
def gmlt : Flag<["-"], "gmlt">, Alias<gline_tables_only>;
-def g0 : Flag<["-"], "g0">, Group<g_Group>;
-def g1 : Flag<["-"], "g1">, Group<g_Group>, Alias<gline_tables_only>;
-def g2 : Flag<["-"], "g2">, Group<g_Group>;
-def g3 : Flag<["-"], "g3">, Group<g_Group>;
-def ggdb : Flag<["-"], "ggdb">, Group<g_Group>;
-def ggdb0 : Flag<["-"], "ggdb0">, Alias<g0>;
-// Redirect ggdb1 to <gline_tables_only>, not <g1>,
-// because aliases of aliases aren't allowed.
-def ggdb1 : Flag<["-"], "ggdb1">, Alias<gline_tables_only>;
-def ggdb2 : Flag<["-"], "ggdb2">, Alias<g2>;
-def ggdb3 : Flag<["-"], "ggdb3">, Alias<g3>;
+def g0 : Flag<["-"], "g0">, Group<gN_Group>;
+def g1 : Flag<["-"], "g1">, Group<gN_Group>, Alias<gline_tables_only>;
+def g2 : Flag<["-"], "g2">, Group<gN_Group>;
+def g3 : Flag<["-"], "g3">, Group<gN_Group>;
+def ggdb : Flag<["-"], "ggdb">, Group<gTune_Group>;
+def ggdb0 : Flag<["-"], "ggdb0">, Group<ggdbN_Group>;
+def ggdb1 : Flag<["-"], "ggdb1">, Group<ggdbN_Group>;
+def ggdb2 : Flag<["-"], "ggdb2">, Group<ggdbN_Group>;
+def ggdb3 : Flag<["-"], "ggdb3">, Group<ggdbN_Group>;
+def glldb : Flag<["-"], "glldb">, Group<gTune_Group>;
+def gsce : Flag<["-"], "gsce">, Group<gTune_Group>;
def gdwarf_2 : Flag<["-"], "gdwarf-2">, Group<g_Group>,
HelpText<"Generate source-level debug information with dwarf version 2">;
def gdwarf_3 : Flag<["-"], "gdwarf-3">, Group<g_Group>,
Modified: cfe/trunk/include/clang/Driver/ToolChain.h
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/include/clang/Driver/ToolChain.h?rev=256104&r1=256103&r2=256104&view=diff
==============================================================================
--- cfe/trunk/include/clang/Driver/ToolChain.h (original)
+++ cfe/trunk/include/clang/Driver/ToolChain.h Sat Dec 19 13:41:48 2015
@@ -18,6 +18,7 @@
#include "llvm/ADT/SmallVector.h"
#include "llvm/ADT/Triple.h"
#include "llvm/Support/Path.h"
+#include "llvm/Target/TargetOptions.h"
#include <memory>
#include <string>
@@ -304,6 +305,11 @@ public:
// i.e. a value of 'true' does not imply that debugging is wanted.
virtual bool GetDefaultStandaloneDebug() const { return false; }
+ // Return the default debugger "tuning."
+ virtual llvm::DebuggerKind getDefaultDebuggerTuning() const {
+ return llvm::DebuggerKind::GDB;
+ }
+
/// UseSjLjExceptions - Does this tool chain use SjLj exceptions.
virtual bool UseSjLjExceptions(const llvm::opt::ArgList &Args) const {
return false;
Modified: cfe/trunk/lib/Driver/ToolChains.h
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Driver/ToolChains.h?rev=256104&r1=256103&r2=256104&view=diff
==============================================================================
--- cfe/trunk/lib/Driver/ToolChains.h (original)
+++ cfe/trunk/lib/Driver/ToolChains.h Sat Dec 19 13:41:48 2015
@@ -566,6 +566,9 @@ public:
// Until dtrace (via CTF) and LLDB can deal with distributed debug info,
// Darwin defaults to standalone/full debug info.
bool GetDefaultStandaloneDebug() const override { return true; }
+ llvm::DebuggerKind getDefaultDebuggerTuning() const override {
+ return llvm::DebuggerKind::LLDB;
+ }
/// }
@@ -727,6 +730,9 @@ public:
// Until dtrace (via CTF) and LLDB can deal with distributed debug info,
// FreeBSD defaults to standalone/full debug info.
bool GetDefaultStandaloneDebug() const override { return true; }
+ llvm::DebuggerKind getDefaultDebuggerTuning() const override {
+ return llvm::DebuggerKind::LLDB;
+ }
protected:
Tool *buildAssembler() const override;
@@ -1122,6 +1128,10 @@ public:
return 2; // SSPStrong
}
+ llvm::DebuggerKind getDefaultDebuggerTuning() const override {
+ return llvm::DebuggerKind::SCE;
+ }
+
SanitizerMask getSupportedSanitizers() const override;
protected:
Modified: cfe/trunk/lib/Driver/Tools.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Driver/Tools.cpp?rev=256104&r1=256103&r2=256104&view=diff
==============================================================================
--- cfe/trunk/lib/Driver/Tools.cpp (original)
+++ cfe/trunk/lib/Driver/Tools.cpp Sat Dec 19 13:41:48 2015
@@ -2487,6 +2487,20 @@ static bool UseRelaxAll(Compilation &C,
RelaxDefault);
}
+// Convert an arg of the form "-gN" or "-ggdbN" or one of their aliases
+// to the corresponding DebugInfoKind.
+static CodeGenOptions::DebugInfoKind DebugLevelToInfoKind(const Arg &A) {
+ assert(A.getOption().matches(options::OPT_gN_Group) &&
+ "Not a -g option that specifies a debug-info level");
+ if (A.getOption().matches(options::OPT_g0) ||
+ A.getOption().matches(options::OPT_ggdb0))
+ return CodeGenOptions::NoDebugInfo;
+ if (A.getOption().matches(options::OPT_gline_tables_only) ||
+ A.getOption().matches(options::OPT_ggdb1))
+ return CodeGenOptions::DebugLineTablesOnly;
+ return CodeGenOptions::LimitedDebugInfo;
+}
+
// Extract the integer N from a string spelled "-dwarf-N", returning 0
// on mismatch. The StringRef input (rather than an Arg) allows
// for use by the "-Xassembler" option parser.
@@ -2500,7 +2514,8 @@ static unsigned DwarfVersionNum(StringRe
static void RenderDebugEnablingArgs(const ArgList &Args, ArgStringList &CmdArgs,
CodeGenOptions::DebugInfoKind DebugInfoKind,
- unsigned DwarfVersion) {
+ unsigned DwarfVersion,
+ llvm::DebuggerKind DebuggerTuning) {
switch (DebugInfoKind) {
case CodeGenOptions::DebugLineTablesOnly:
CmdArgs.push_back("-debug-info-kind=line-tables-only");
@@ -2517,6 +2532,19 @@ static void RenderDebugEnablingArgs(cons
if (DwarfVersion > 0)
CmdArgs.push_back(
Args.MakeArgString("-dwarf-version=" + Twine(DwarfVersion)));
+ switch (DebuggerTuning) {
+ case llvm::DebuggerKind::GDB:
+ CmdArgs.push_back("-debugger-tuning=gdb");
+ break;
+ case llvm::DebuggerKind::LLDB:
+ CmdArgs.push_back("-debugger-tuning=lldb");
+ break;
+ case llvm::DebuggerKind::SCE:
+ CmdArgs.push_back("-debugger-tuning=sce");
+ break;
+ default:
+ break;
+ }
}
static void CollectArgsForIntegratedAssembler(Compilation &C,
@@ -2604,7 +2632,8 @@ static void CollectArgsForIntegratedAsse
CmdArgs.push_back(Value.data());
} else {
RenderDebugEnablingArgs(
- Args, CmdArgs, CodeGenOptions::LimitedDebugInfo, DwarfVersion);
+ Args, CmdArgs, CodeGenOptions::LimitedDebugInfo, DwarfVersion,
+ llvm::DebuggerKind::Default);
}
} else if (Value.startswith("-mcpu") || Value.startswith("-mfpu") ||
Value.startswith("-mhwdiv") || Value.startswith("-march")) {
@@ -3977,16 +4006,18 @@ void Clang::ConstructJob(Compilation &C,
// The 'g' groups options involve a somewhat intricate sequence of decisions
// about what to pass from the driver to the frontend, but by the time they
- // reach cc1 they've been factored into two well-defined orthogonal choices:
+ // reach cc1 they've been factored into three well-defined orthogonal choices:
// * what level of debug info to generate
// * what dwarf version to write
+ // * what debugger tuning to use
// This avoids having to monkey around further in cc1 other than to disable
// codeview if not running in a Windows environment. Perhaps even that
// decision should be made in the driver as well though.
+ unsigned DwarfVersion = 0;
+ llvm::DebuggerKind DebuggerTuning = getToolChain().getDefaultDebuggerTuning();
+ // These two are potentially updated by AddClangCLArgs.
enum CodeGenOptions::DebugInfoKind DebugInfoKind =
CodeGenOptions::NoDebugInfo;
- // These two are potentially updated by AddClangCLArgs.
- unsigned DwarfVersion = 0;
bool EmitCodeView = false;
// Add clang-cl arguments.
@@ -4035,25 +4066,32 @@ void Clang::ConstructJob(Compilation &C,
Args.ClaimAllArgs(options::OPT_g_Group);
Arg *SplitDwarfArg = Args.getLastArg(options::OPT_gsplit_dwarf);
if (Arg *A = Args.getLastArg(options::OPT_g_Group)) {
- // If you say "-gline-tables-only -gsplit-dwarf", split-dwarf wins,
- // which mandates turning on "-g". But -split-dwarf is not a g_group option,
- // hence it takes a nontrivial test to decide about line-tables-only.
- if (A->getOption().matches(options::OPT_gline_tables_only) &&
- (!SplitDwarfArg || A->getIndex() > SplitDwarfArg->getIndex())) {
- DebugInfoKind = CodeGenOptions::DebugLineTablesOnly;
- SplitDwarfArg = nullptr;
- } else if (!A->getOption().matches(options::OPT_g0)) {
- // Some 'g' group option other than one expressly disabling debug info
- // must have been the final (winning) one. They're all equivalent.
+ // If the last option explicitly specified a debug-info level, use it.
+ if (A->getOption().matches(options::OPT_gN_Group)) {
+ DebugInfoKind = DebugLevelToInfoKind(*A);
+ // If you say "-gsplit-dwarf -gline-tables-only", -gsplit-dwarf loses.
+ // But -gsplit-dwarf is not a g_group option, hence we have to check the
+ // order explicitly. (If -gsplit-dwarf wins, we fix DebugInfoKind later.)
+ if (SplitDwarfArg && DebugInfoKind < CodeGenOptions::LimitedDebugInfo &&
+ A->getIndex() > SplitDwarfArg->getIndex())
+ SplitDwarfArg = nullptr;
+ } else
+ // For any other 'g' option, use Limited.
DebugInfoKind = CodeGenOptions::LimitedDebugInfo;
- }
}
- // If a -gdwarf argument appeared, use it, unless DebugInfoKind is None
- // (because that would mean that "-g0" was the rightmost 'g' group option).
- // FIXME: specifying "-gdwarf-<N>" "-g1" in that order works,
- // but "-g1" "-gdwarf-<N>" does not. A deceptively simple (but wrong) "fix"
- // exists of removing the gdwarf options from the g_group.
+ // If a debugger tuning argument appeared, remember it.
+ if (Arg *A = Args.getLastArg(options::OPT_gTune_Group,
+ options::OPT_ggdbN_Group)) {
+ if (A->getOption().matches(options::OPT_glldb))
+ DebuggerTuning = llvm::DebuggerKind::LLDB;
+ else if (A->getOption().matches(options::OPT_gsce))
+ DebuggerTuning = llvm::DebuggerKind::SCE;
+ else
+ DebuggerTuning = llvm::DebuggerKind::GDB;
+ }
+
+ // If a -gdwarf argument appeared, remember it.
if (Arg *A = Args.getLastArg(options::OPT_gdwarf_2, options::OPT_gdwarf_3,
options::OPT_gdwarf_4))
DwarfVersion = DwarfVersionNum(A->getSpelling());
@@ -4102,7 +4140,8 @@ void Clang::ConstructJob(Compilation &C,
getToolChain().GetDefaultStandaloneDebug());
if (DebugInfoKind == CodeGenOptions::LimitedDebugInfo && NeedFullDebug)
DebugInfoKind = CodeGenOptions::FullDebugInfo;
- RenderDebugEnablingArgs(Args, CmdArgs, DebugInfoKind, DwarfVersion);
+ RenderDebugEnablingArgs(Args, CmdArgs, DebugInfoKind, DwarfVersion,
+ DebuggerTuning);
// -ggnu-pubnames turns on gnu style pubnames in the backend.
if (Args.hasArg(options::OPT_ggnu_pubnames)) {
@@ -5888,7 +5927,8 @@ void ClangAs::ConstructJob(Compilation &
unsigned DwarfVersion = 0;
Args.ClaimAllArgs(options::OPT_g_Group);
if (Arg *A = Args.getLastArg(options::OPT_g_Group)) {
- WantDebug = !A->getOption().matches(options::OPT_g0);
+ WantDebug = !A->getOption().matches(options::OPT_g0) &&
+ !A->getOption().matches(options::OPT_ggdb0);
if (WantDebug)
DwarfVersion = DwarfVersionNum(A->getSpelling());
}
@@ -5897,7 +5937,7 @@ void ClangAs::ConstructJob(Compilation &
RenderDebugEnablingArgs(Args, CmdArgs,
(WantDebug ? CodeGenOptions::LimitedDebugInfo
: CodeGenOptions::NoDebugInfo),
- DwarfVersion);
+ DwarfVersion, llvm::DebuggerKind::Default);
// Add the -fdebug-compilation-dir flag if needed.
addDebugCompDirArg(Args, CmdArgs);
Modified: cfe/trunk/test/Driver/debug-options.c
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/Driver/debug-options.c?rev=256104&r1=256103&r2=256104&view=diff
==============================================================================
--- cfe/trunk/test/Driver/debug-options.c (original)
+++ cfe/trunk/test/Driver/debug-options.c Sat Dec 19 13:41:48 2015
@@ -2,31 +2,38 @@
// rdar://10383444
// RUN: %clang -### -c -g %s -target x86_64-linux-gnu 2>&1 \
-// RUN: | FileCheck -check-prefix=G %s
+// RUN: | FileCheck -check-prefix=G -check-prefix=G_GDB %s
// RUN: %clang -### -c -g2 %s -target x86_64-linux-gnu 2>&1 \
// RUN: | FileCheck -check-prefix=G %s
// RUN: %clang -### -c -g3 %s -target x86_64-linux-gnu 2>&1 \
// RUN: | FileCheck -check-prefix=G %s
// RUN: %clang -### -c -ggdb %s -target x86_64-linux-gnu 2>&1 \
-// RUN: | FileCheck -check-prefix=G %s
+// RUN: | FileCheck -check-prefix=G -check-prefix=G_GDB %s
// RUN: %clang -### -c -ggdb1 %s -target x86_64-linux-gnu 2>&1 \
-// RUN: | FileCheck -check-prefix=GLTO_ONLY %s
+// RUN: | FileCheck -check-prefix=GLTO_ONLY -check-prefix=G_GDB %s
// RUN: %clang -### -c -ggdb3 %s -target x86_64-linux-gnu 2>&1 \
// RUN: | FileCheck -check-prefix=G %s
+// RUN: %clang -### -c -glldb %s -target x86_64-linux-gnu 2>&1 \
+// RUN: | FileCheck -check-prefix=G -check-prefix=G_LLDB %s
+// RUN: %clang -### -c -gsce %s -target x86_64-linux-gnu 2>&1 \
+// RUN: | FileCheck -check-prefix=G -check-prefix=G_SCE %s
// RUN: %clang -### -c -g %s -target x86_64-apple-darwin 2>&1 \
-// RUN: | FileCheck -check-prefix=G_DARWIN %s
+// RUN: | FileCheck -check-prefix=G_DARWIN -check-prefix=G_LLDB %s
// RUN: %clang -### -c -g2 %s -target x86_64-apple-darwin 2>&1 \
// RUN: | FileCheck -check-prefix=G_DARWIN %s
// RUN: %clang -### -c -g3 %s -target x86_64-apple-darwin 2>&1 \
// RUN: | FileCheck -check-prefix=G_DARWIN %s
// RUN: %clang -### -c -ggdb %s -target x86_64-apple-darwin 2>&1 \
-// RUN: | FileCheck -check-prefix=G_DARWIN %s
+// RUN: | FileCheck -check-prefix=G_DARWIN -check-prefix=G_GDB %s
// RUN: %clang -### -c -ggdb1 %s -target x86_64-apple-darwin 2>&1 \
// RUN: | FileCheck -check-prefix=GLTO_ONLY_DWARF2 %s
// RUN: %clang -### -c -ggdb3 %s -target x86_64-apple-darwin 2>&1 \
// RUN: | FileCheck -check-prefix=G_DARWIN %s
+// RUN: %clang -### -c -g %s -target x86_64-pc-freebsd10.0 2>&1 \
+// RUN: | FileCheck -check-prefix=G_LLDB %s
+
// On the PS4, -g defaults to -gno-column-info, and we always generate the
// arange section.
// RUN: %clang -### -c %s -target x86_64-scei-ps4 2>&1 \
@@ -34,6 +41,8 @@
// RUN: %clang -### -c %s -g -target x86_64-scei-ps4 2>&1 \
// RUN: | FileCheck -check-prefix=G_PS4 %s
// RUN: %clang -### -c %s -g -target x86_64-scei-ps4 2>&1 \
+// RUN: | FileCheck -check-prefix=G_SCE %s
+// RUN: %clang -### -c %s -g -target x86_64-scei-ps4 2>&1 \
// RUN: | FileCheck -check-prefix=NOCI %s
// RUN: %clang -### -c %s -g -gcolumn-info -target x86_64-scei-ps4 2>&1 \
// RUN: | FileCheck -check-prefix=CI %s
@@ -43,6 +52,14 @@
// RUN: %clang -### -c -gfoo %s 2>&1 | FileCheck -check-prefix=G_NO %s
// RUN: %clang -### -c -g -g0 %s 2>&1 | FileCheck -check-prefix=G_NO %s
// RUN: %clang -### -c -ggdb0 %s 2>&1 | FileCheck -check-prefix=G_NO %s
+// RUN: %clang -### -c -glldb -g0 %s 2>&1 | FileCheck -check-prefix=G_NO %s
+// RUN: %clang -### -c -glldb -g1 %s 2>&1 \
+// RUN: | FileCheck -check-prefix=GLTO_ONLY -check-prefix=G_LLDB %s
+//
+// PS4 defaults to sce; -ggdb0 changes tuning but turns off debug info,
+// then -g turns it back on without affecting tuning.
+// RUN: %clang -### -c -ggdb0 -g -target x86_64-scei-ps4 %s 2>&1 \
+// RUN: | FileCheck -check-prefix=G -check-prefix=G_GDB %s
//
// RUN: %clang -### -c -g1 %s 2>&1 \
// RUN: | FileCheck -check-prefix=GLTO_ONLY %s
@@ -123,6 +140,10 @@
// G_ONLY: "-cc1"
// G_ONLY: "-debug-info-kind=limited"
//
+// G_GDB: "-debugger-tuning=gdb"
+// G_LLDB: "-debugger-tuning=lldb"
+// G_SCE: "-debugger-tuning=sce"
+//
// These tests assert that "-gline-tables-only" "-g" uses the latter,
// but otherwise not caring about the DebugInfoKind.
// G_ONLY_DWARF2: "-cc1"
Modified: cfe/trunk/test/Driver/split-debug.c
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/Driver/split-debug.c?rev=256104&r1=256103&r2=256104&view=diff
==============================================================================
--- cfe/trunk/test/Driver/split-debug.c (original)
+++ cfe/trunk/test/Driver/split-debug.c Sat Dec 19 13:41:48 2015
@@ -45,3 +45,16 @@
//
// CHECK-SPLIT-OVER-GMLT: "-split-dwarf=Enable" "-debug-info-kind=limited"
// CHECK-SPLIT-OVER-GMLT: "-split-dwarf-file"
+
+// RUN: %clang -target x86_64-unknown-linux-gnu -gsplit-dwarf -g0 -S -### %s 2> %t
+// RUN: FileCheck -check-prefix=CHECK-G0-OVER-SPLIT < %t %s
+//
+// CHECK-G0-OVER-SPLIT-NOT: "-debug-info-kind
+// CHECK-G0-OVER-SPLIT-NOT: "-split-dwarf=Enable"
+// CHECK-G0-OVER-SPLIT-NOT: "-split-dwarf-file"
+
+// RUN: %clang -target x86_64-unknown-linux-gnu -g0 -gsplit-dwarf -S -### %s 2> %t
+// RUN: FileCheck -check-prefix=CHECK-SPLIT-OVER-G0 < %t %s
+//
+// CHECK-SPLIT-OVER-G0: "-split-dwarf=Enable" "-debug-info-kind=limited"
+// CHECK-SPLIT-OVER-G0: "-split-dwarf-file"
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