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[clang] Add no-warn support for Wa 

llvm-svn: 368328
This commit is contained in:
Brian Cain 2019-08-08 19:19:20 +00:00
parent 6dbbd0f343
commit 7b953b6455
7 changed files with 26 additions and 0 deletions
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1
clang/include/clang/Basic/CodeGenOptions.def
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@ -133,6 +133,7 @@ CODEGENOPT(NoDwarfDirectoryAsm , 1, 0) ///< Set when -fno-dwarf-directory-asm is
CODEGENOPT(NoExecStack , 1, 0) ///< Set when -Wa,--noexecstack is enabled.
CODEGENOPT(FatalWarnings , 1, 0) ///< Set when -Wa,--fatal-warnings is
///< enabled.
CODEGENOPT(NoWarn , 1, 0) ///< Set when -Wa,--no-warn is enabled.
CODEGENOPT(EnableSegmentedStacks , 1, 0) ///< Set when -fsplit-stack is enabled.
CODEGENOPT(NoImplicitFloat , 1, 0) ///< Set when -mno-implicit-float is enabled.
CODEGENOPT(NoInfsFPMath , 1, 0) ///< Assume FP arguments, results not +-Inf.

2
clang/include/clang/Driver/CC1Options.td
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@ -200,6 +200,8 @@ def compress_debug_sections_EQ : Joined<["-", "--"], "compress-debug-sections=">
HelpText<"DWARF debug sections compression type">;
def mno_exec_stack : Flag<["-"], "mnoexecstack">,
HelpText<"Mark the file as not needing an executable stack">;
def massembler_no_warn : Flag<["-"], "massembler-no-warn">,
HelpText<"Make assembler not emit warnings">;
def massembler_fatal_warnings : Flag<["-"], "massembler-fatal-warnings">,
HelpText<"Make assembler warnings fatal">;
def mrelax_relocations : Flag<["--"], "mrelax-relocations">,

1
clang/lib/CodeGen/BackendUtil.cpp
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@ -493,6 +493,7 @@ static void initTargetOptions(llvm::TargetOptions &Options,
CodeGenOpts.IncrementalLinkerCompatible;
Options.MCOptions.MCPIECopyRelocations = CodeGenOpts.PIECopyRelocations;
Options.MCOptions.MCFatalWarnings = CodeGenOpts.FatalWarnings;
Options.MCOptions.MCNoWarn = CodeGenOpts.NoWarn;
Options.MCOptions.AsmVerbose = CodeGenOpts.AsmVerbose;
Options.MCOptions.PreserveAsmComments = CodeGenOpts.PreserveAsmComments;
Options.MCOptions.ABIName = TargetOpts.ABI;

2
clang/lib/Driver/ToolChains/Clang.cpp
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@ -2169,6 +2169,8 @@ static void CollectArgsForIntegratedAssembler(Compilation &C,
CmdArgs.push_back("-msave-temp-labels");
} else if (Value == "--fatal-warnings") {
CmdArgs.push_back("-massembler-fatal-warnings");
} else if (Value == "--no-warn") {
CmdArgs.push_back("-massembler-no-warn");
} else if (Value == "--noexecstack") {
UseNoExecStack = true;
} else if (Value.startswith("-compress-debug-sections") ||

1
clang/lib/Frontend/CompilerInvocation.cpp
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@ -888,6 +888,7 @@ static bool ParseCodeGenArgs(CodeGenOptions &Opts, ArgList &Args, InputKind IK,
Opts.NumRegisterParameters = getLastArgIntValue(Args, OPT_mregparm, 0, Diags);
Opts.NoExecStack = Args.hasArg(OPT_mno_exec_stack);
Opts.FatalWarnings = Args.hasArg(OPT_massembler_fatal_warnings);
Opts.NoWarn = Args.hasArg(OPT_massembler_no_warn);
Opts.EnableSegmentedStacks = Args.hasArg(OPT_split_stacks);
Opts.RelaxAll = Args.hasArg(OPT_mrelax_all);
Opts.IncrementalLinkerCompatible =

14
clang/test/Driver/as-no-warnings.c Normal file
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@ -0,0 +1,14 @@
// RUN: %clang -### %s -c -o tmp.o -target i686-pc-linux-gnu -fno-integrated-as -Wa,--no-warn 2>&1 | FileCheck -check-prefix=CHECK-NOIAS %s
// RUN: %clang -### %s -c -o tmp.o -target i686-pc-linux-gnu -integrated-as -Wa,--no-warn 2>&1 | FileCheck %s
// RUN: %clang %s -c -o %t.o -target i686-pc-linux-gnu -integrated-as -Wa,--no-warn 2>&1 | FileCheck -allow-empty --check-prefix=CHECK-AS-NOWARN %s
// RUN: %clang %s -c -o %t.o -target i686-pc-linux-gnu -fno-integrated-as -Wa,--no-warn 2>&1 | FileCheck -allow-empty --check-prefix=CHECK-AS-NOWARN %s
// RUN: not %clang %s -c -o %t.o -target i686-pc-linux-gnu -integrated-as -Wa,--fatal-warnings 2>&1 | FileCheck --check-prefix=CHECK-AS-FATAL %s
// RUN: not %clang %s -c -o %t.o -target i686-pc-linux-gnu -fno-integrated-as -Wa,--fatal-warnings 2>&1 | FileCheck --check-prefix=CHECK-AS-FATAL %s
// CHECK: "-cc1" {{.*}} "-massembler-no-warn"
// CHECK-NOIAS: "--no-warn"
// CHECK-AS-NOWARN-NOT: warning:
// CHECK-AS-FATAL-NOT: warning:
// CHECK-AS-FATAL: error
__asm(".warning");

5
clang/tools/driver/cc1as_main.cpp
View File

@ -131,6 +131,7 @@ struct AssemblerInvocation {
unsigned RelaxAll : 1;
unsigned NoExecStack : 1;
unsigned FatalWarnings : 1;
unsigned NoWarn : 1;
unsigned IncrementalLinkerCompatible : 1;
unsigned EmbedBitcode : 1;
@ -156,6 +157,7 @@ public:
RelaxAll = 0;
NoExecStack = 0;
FatalWarnings = 0;
NoWarn = 0;
IncrementalLinkerCompatible = 0;
DwarfVersion = 0;
EmbedBitcode = 0;
@ -285,6 +287,7 @@ bool AssemblerInvocation::CreateFromArgs(AssemblerInvocation &Opts,
Opts.RelaxAll = Args.hasArg(OPT_mrelax_all);
Opts.NoExecStack = Args.hasArg(OPT_mno_exec_stack);
Opts.FatalWarnings = Args.hasArg(OPT_massembler_fatal_warnings);
Opts.NoWarn = Args.hasArg(OPT_massembler_no_warn);
Opts.RelocationModel = Args.getLastArgValue(OPT_mrelocation_model, "pic");
Opts.TargetABI = Args.getLastArgValue(OPT_target_abi);
Opts.IncrementalLinkerCompatible =
@ -432,6 +435,8 @@ static bool ExecuteAssembler(AssemblerInvocation &Opts,
raw_pwrite_stream *Out = FDOS.get();
std::unique_ptr<buffer_ostream> BOS;
MCOptions.MCNoWarn = Opts.NoWarn;
MCOptions.MCFatalWarnings = Opts.FatalWarnings;
MCOptions.ABIName = Opts.TargetABI;
// FIXME: There is a bit of code duplication with addPassesToEmitFile.