This patch implements -gstrict-dwarf option in clang FE.
Reviewed By: dblaikie, probinson, aprantl
Differential Revision: https://reviews.llvm.org/D100809
.. option:: -gstrict-dwarf, -gno-strict-dwarf
+Restrict DWARF features to those defined in the specified version, avoiding features from later versions.
+
.. option:: -gz=<arg>, -gz (equivalent to -gz=zlib)
DWARF debug sections compression type
VALUE_CODEGENOPT(StackProbeSize , 32, 4096) ///< Overrides default stack
///< probe size, even if 0.
CODEGENOPT(NoStackArgProbe, 1, 0) ///< Set when -mno-stack-arg-probe is used
+CODEGENOPT(DebugStrictDwarf, 1, 1) ///< Whether or not to use strict DWARF info.
CODEGENOPT(DebugColumnInfo, 1, 0) ///< Whether or not to use column information
///< in debug info.
Group<g_flags_Group>;
def : Flag<["-"], "grecord-gcc-switches">, Alias<grecord_command_line>;
def : Flag<["-"], "gno-record-gcc-switches">, Alias<gno_record_command_line>;
-def gstrict_dwarf : Flag<["-"], "gstrict-dwarf">, Group<g_flags_Group>;
-def gno_strict_dwarf : Flag<["-"], "gno-strict-dwarf">, Group<g_flags_Group>;
+defm strict_dwarf : BoolOption<"g", "strict-dwarf",
+ CodeGenOpts<"DebugStrictDwarf">, DefaultFalse,
+ PosFlag<SetTrue, [CC1Option]>, NegFlag<SetFalse>, BothFlags<[CoreOption]>>,
+ Group<g_flags_Group>;
defm column_info : BoolOption<"g", "column-info",
CodeGenOpts<"DebugColumnInfo">, DefaultTrue,
NegFlag<SetFalse, [CC1Option]>, PosFlag<SetTrue>, BothFlags<[CoreOption]>>,
DebugInfoKind == codegenoptions::DebugDirectivesOnly)
DebugInfoKind = codegenoptions::NoDebugInfo;
- // We ignore flag -gstrict-dwarf for now.
+ // strict DWARF is set to false by default. But for DBX, we need it to be set
+ // as true by default.
+ if (const Arg *A = Args.getLastArg(options::OPT_gstrict_dwarf))
+ (void)checkDebugInfoOption(A, Args, D, TC);
+ if (Args.hasFlag(options::OPT_gstrict_dwarf, options::OPT_gno_strict_dwarf,
+ DebuggerTuning == llvm::DebuggerKind::DBX))
+ CmdArgs.push_back("-gstrict-dwarf");
+
// And we handle flag -grecord-gcc-switches later with DWARFDebugFlags.
Args.ClaimAllArgs(options::OPT_g_flags_Group);
// RUN: %clang -### -c -g %s -target powerpc64-ibm-aix-xcoff 2>&1 \
// RUN: | FileCheck -check-prefix=G_LIMITED -check-prefix=G_DBX %s
+// For DBX, -g defaults to -gstrict-dwarf.
+// RUN: %clang -### -c -g %s -target powerpc-ibm-aix-xcoff 2>&1 \
+// RUN: | FileCheck -check-prefix=STRICT %s
+// RUN: %clang -### -c -g %s -target powerpc64-ibm-aix-xcoff 2>&1 \
+// RUN: | FileCheck -check-prefix=STRICT %s
+// RUN: %clang -### -c -g -gno-strict-dwarf %s -target powerpc-ibm-aix-xcoff \
+// RUN: 2>&1 | FileCheck -check-prefix=NOSTRICT %s
+// RUN: %clang -### -c -g %s -target x86_64-linux-gnu 2>&1 \
+// RUN: | FileCheck -check-prefix=NOSTRICT %s
+// RUN: %clang -### -c -g -ggdb %s -target powerpc-ibm-aix-xcoff 2>&1 \
+// RUN: | FileCheck -check-prefix=NOSTRICT %s
+
// On the AIX, -g defaults to -gno-column-info.
// RUN: %clang -### -c -g %s -target powerpc-ibm-aix-xcoff 2>&1 \
// RUN: | FileCheck -check-prefix=NOCI %s
// G_SCE: "-debugger-tuning=sce"
// G_DBX: "-debugger-tuning=dbx"
//
+// STRICT: "-gstrict-dwarf"
+// NOSTRICT-NOT: "-gstrict-dwarf"
+//
// G_NOTUNING: "-cc1"
// G_NOTUNING-NOT: "-debugger-tuning="
//