scott.linder created this revision.
Herald added a subscriber: cfe-commits.
See the parent revision https://reviews.llvm.org/D54487 for differences between
this implementation and the equivalent GCC option.
Repository:
rC Clang
https://reviews.llvm.org/D54489
Files:
docs/ClangCommandLineReference.rst
include/clang/Driver/CC1Options.td
include/clang/Driver/Options.td
include/clang/Frontend/CodeGenOptions.h
lib/CodeGen/CodeGenModule.cpp
lib/CodeGen/CodeGenModule.h
lib/Driver/ToolChains/Clang.cpp
lib/Frontend/CompilerInvocation.cpp
test/Driver/clang_f_opts.c
Index: test/Driver/clang_f_opts.c
===================================================================
--- test/Driver/clang_f_opts.c
+++ test/Driver/clang_f_opts.c
@@ -538,3 +538,10 @@
// RUN: %clang -### -S -fomit-frame-pointer -fno-omit-frame-pointer -pg %s 2>&1 | FileCheck -check-prefix=CHECK-MIX-NO-OMIT-FP-PG %s
// CHECK-NO-MIX-OMIT-FP-PG: '-fomit-frame-pointer' not allowed with '-pg'
// CHECK-MIX-NO-OMIT-FP-PG-NOT: '-fomit-frame-pointer' not allowed with '-pg'
+
+// RUN: %clang -### -S -frecord-gcc-switches %s 2>&1 | FileCheck -check-prefix=CHECK-RECORD-GCC-SWITCHES %s
+// RUN: %clang -### -S -fno-record-gcc-switches %s 2>&1 | FileCheck -check-prefix=CHECK-NO-RECORD-GCC-SWITCHES %s
+// RUN: %clang -### -S -fno-record-gcc-switches -frecord-gcc-switches %s 2>&1 | FileCheck -check-prefix=CHECK-RECORD-GCC-SWITCHES %s
+// RUN: %clang -### -S -frecord-gcc-switches -fno-record-gcc-switches %s 2>&1 | FileCheck -check-prefix=CHECK-NO-RECORD-GCC-SWITCHES %s
+// CHECK-RECORD-GCC-SWITCHES: "-record-command-line"
+// CHECK-NO-RECORD-GCC-SWITCHES-NOT: "-record-command-line"
Index: lib/Frontend/CompilerInvocation.cpp
===================================================================
--- lib/Frontend/CompilerInvocation.cpp
+++ lib/Frontend/CompilerInvocation.cpp
@@ -627,6 +627,7 @@
Args.hasFlag(OPT_ffine_grained_bitfield_accesses,
OPT_fno_fine_grained_bitfield_accesses, false);
Opts.DwarfDebugFlags = Args.getLastArgValue(OPT_dwarf_debug_flags);
+ Opts.RecordCommandLine = Args.getLastArgValue(OPT_record_command_line);
Opts.MergeAllConstants = Args.hasArg(OPT_fmerge_all_constants);
Opts.NoCommon = Args.hasArg(OPT_fno_common);
Opts.NoImplicitFloat = Args.hasArg(OPT_no_implicit_float);
Index: lib/Driver/ToolChains/Clang.cpp
===================================================================
--- lib/Driver/ToolChains/Clang.cpp
+++ lib/Driver/ToolChains/Clang.cpp
@@ -4985,14 +4985,18 @@
const char *Exec = D.getClangProgramPath();
- // Optionally embed the -cc1 level arguments into the debug info, for build
- // analysis.
+ // Optionally embed the -cc1 level arguments into the debug info or a
+ // section, for build analysis.
// Also record command line arguments into the debug info if
// -grecord-gcc-switches options is set on.
// By default, -gno-record-gcc-switches is set on and no recording.
- if (TC.UseDwarfDebugFlags() ||
+ auto GRecordSwitches =
Args.hasFlag(options::OPT_grecord_gcc_switches,
- options::OPT_gno_record_gcc_switches, false)) {
+ options::OPT_gno_record_gcc_switches, false);
+ auto FRecordSwitches =
+ Args.hasFlag(options::OPT_frecord_gcc_switches,
+ options::OPT_fno_record_gcc_switches, false);
+ if (TC.UseDwarfDebugFlags() || GRecordSwitches || FRecordSwitches) {
ArgStringList OriginalArgs;
for (const auto &Arg : Args)
Arg->render(Args, OriginalArgs);
@@ -5005,8 +5009,15 @@
Flags += " ";
Flags += EscapedArg;
}
- CmdArgs.push_back("-dwarf-debug-flags");
- CmdArgs.push_back(Args.MakeArgString(Flags));
+ auto FlagsArgString = Args.MakeArgString(Flags);
+ if (TC.UseDwarfDebugFlags() || GRecordSwitches) {
+ CmdArgs.push_back("-dwarf-debug-flags");
+ CmdArgs.push_back(FlagsArgString);
+ }
+ if (FRecordSwitches) {
+ CmdArgs.push_back("-record-command-line");
+ CmdArgs.push_back(FlagsArgString);
+ }
}
// Host-side cuda compilation receives all device-side outputs in a single
Index: lib/CodeGen/CodeGenModule.h
===================================================================
--- lib/CodeGen/CodeGenModule.h
+++ lib/CodeGen/CodeGenModule.h
@@ -1402,6 +1402,9 @@
/// Emit the Clang version as llvm.ident metadata.
void EmitVersionIdentMetadata();
+ /// Emit the Clang commandline as llvm.commandline metadata.
+ void EmitCommandLineMetadata();
+
/// Emits target specific Metadata for global declarations.
void EmitTargetMetadata();
Index: lib/CodeGen/CodeGenModule.cpp
===================================================================
--- lib/CodeGen/CodeGenModule.cpp
+++ lib/CodeGen/CodeGenModule.cpp
@@ -587,6 +587,9 @@
if (getCodeGenOpts().EmitVersionIdentMetadata)
EmitVersionIdentMetadata();
+ if (!getCodeGenOpts().RecordCommandLine.empty())
+ EmitCommandLineMetadata();
+
EmitTargetMetadata();
}
@@ -5189,6 +5192,16 @@
IdentMetadata->addOperand(llvm::MDNode::get(Ctx, IdentNode));
}
+void CodeGenModule::EmitCommandLineMetadata() {
+ llvm::NamedMDNode *CommandLineMetadata =
+ TheModule.getOrInsertNamedMetadata("llvm.commandline");
+ std::string CommandLine = getCodeGenOpts().RecordCommandLine;
+ llvm::LLVMContext &Ctx = TheModule.getContext();
+
+ llvm::Metadata *CommandLineNode[] = {llvm::MDString::get(Ctx, CommandLine)};
+ CommandLineMetadata->addOperand(llvm::MDNode::get(Ctx, CommandLineNode));
+}
+
void CodeGenModule::EmitTargetMetadata() {
// Warning, new MangledDeclNames may be appended within this loop.
// We rely on MapVector insertions adding new elements to the end
Index: include/clang/Frontend/CodeGenOptions.h
===================================================================
--- include/clang/Frontend/CodeGenOptions.h
+++ include/clang/Frontend/CodeGenOptions.h
@@ -140,6 +140,10 @@
/// non-empty.
std::string DwarfDebugFlags;
+ /// The string containing the commandline for the llvm.commandline metadata,
+ /// if non-empty.
+ std::string RecordCommandLine;
+
std::map<std::string, std::string> DebugPrefixMap;
/// The ABI to use for passing floating point arguments.
Index: include/clang/Driver/Options.td
===================================================================
--- include/clang/Driver/Options.td
+++ include/clang/Driver/Options.td
@@ -797,6 +797,9 @@
HelpText<"Treat each comma separated argument in <arg> as a documentation comment block command">,
MetaVarName<"<arg>">;
def fparse_all_comments : Flag<["-"], "fparse-all-comments">, Group<f_clang_Group>, Flags<[CC1Option]>;
+def frecord_gcc_switches : Flag<["-"], "frecord-gcc-switches">, Group<f_clang_Group>;
+def fno_record_gcc_switches : Flag<["-"], "fno-record-gcc-switches">,
+ Group<f_clang_Group>;
def fcommon : Flag<["-"], "fcommon">, Group<f_Group>;
def fcompile_resource_EQ : Joined<["-"], "fcompile-resource=">, Group<f_Group>;
def fcomplete_member_pointers : Flag<["-"], "fcomplete-member-pointers">, Group<f_clang_Group>,
Index: include/clang/Driver/CC1Options.td
===================================================================
--- include/clang/Driver/CC1Options.td
+++ include/clang/Driver/CC1Options.td
@@ -161,6 +161,8 @@
HelpText<"The compilation directory to embed in the debug info.">;
def dwarf_debug_flags : Separate<["-"], "dwarf-debug-flags">,
HelpText<"The string to embed in the Dwarf debug flags record.">;
+def record_command_line : Separate<["-"], "record-command-line">,
+ HelpText<"The string to embed in the .LLVM.command.line section.">;
def compress_debug_sections : Flag<["-", "--"], "compress-debug-sections">,
HelpText<"DWARF debug sections compression">;
def compress_debug_sections_EQ : Joined<["-"], "compress-debug-sections=">,
Index: docs/ClangCommandLineReference.rst
===================================================================
--- docs/ClangCommandLineReference.rst
+++ docs/ClangCommandLineReference.rst
@@ -792,6 +792,10 @@
.. option:: -fparse-all-comments
+.. option:: -frecord-gcc-switches, -fno-record-gcc-switches
+
+Generate a section .LLVM.command.line containing the clang driver command line
+
.. option:: -fsanitize-address-field-padding=<arg>
Level of field padding for AddressSanitizer
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