[Driver] Add support for -fno-builtin-foo options.
Addresses PR4941 and rdar://6756912.
http://reviews.llvm.org/D15195
llvm-svn: 256937
diff --git a/clang/lib/Frontend/CompilerInvocation.cpp b/clang/lib/Frontend/CompilerInvocation.cpp
index 08f762f..3a32f47 100644
--- a/clang/lib/Frontend/CompilerInvocation.cpp
+++ b/clang/lib/Frontend/CompilerInvocation.cpp
@@ -8,13 +8,14 @@
//===----------------------------------------------------------------------===//
#include "TestModuleFileExtension.h"
-#include "clang/Frontend/CompilerInvocation.h"
+#include "clang/Basic/Builtins.h"
#include "clang/Basic/FileManager.h"
#include "clang/Basic/Version.h"
#include "clang/Config/config.h"
#include "clang/Driver/DriverDiagnostic.h"
#include "clang/Driver/Options.h"
#include "clang/Driver/Util.h"
+#include "clang/Frontend/CompilerInvocation.h"
#include "clang/Frontend/FrontendDiagnostic.h"
#include "clang/Frontend/LangStandard.h"
#include "clang/Frontend/Utils.h"
@@ -135,6 +136,20 @@
}
}
+static void getAllNoBuiltinFuncValues(ArgList &Args,
+ std::vector<std::string> &Funcs) {
+ SmallVector<const char *, 8> Values;
+ for (const auto &Arg : Args) {
+ const Option &O = Arg->getOption();
+ if (O.matches(options::OPT_fno_builtin_)) {
+ const char *FuncName = Arg->getValue();
+ if (Builtin::Context::isBuiltinFunc(FuncName))
+ Values.push_back(FuncName);
+ }
+ }
+ Funcs.insert(Funcs.end(), Values.begin(), Values.end());
+}
+
static bool ParseAnalyzerArgs(AnalyzerOptions &Opts, ArgList &Args,
DiagnosticsEngine &Diags) {
using namespace options;
@@ -452,6 +467,8 @@
Opts.OptimizeSize = getOptimizationLevelSize(Args);
Opts.SimplifyLibCalls = !(Args.hasArg(OPT_fno_builtin) ||
Args.hasArg(OPT_ffreestanding));
+ if (Opts.SimplifyLibCalls)
+ getAllNoBuiltinFuncValues(Args, Opts.NoBuiltinFuncs);
Opts.UnrollLoops =
Args.hasFlag(OPT_funroll_loops, OPT_fno_unroll_loops,
(Opts.OptimizationLevel > 1 && !Opts.OptimizeSize));
@@ -1669,6 +1686,8 @@
Opts.ShortEnums = Args.hasArg(OPT_fshort_enums);
Opts.Freestanding = Args.hasArg(OPT_ffreestanding);
Opts.NoBuiltin = Args.hasArg(OPT_fno_builtin) || Opts.Freestanding;
+ if (!Opts.NoBuiltin)
+ getAllNoBuiltinFuncValues(Args, Opts.NoBuiltinFuncs);
Opts.NoMathBuiltin = Args.hasArg(OPT_fno_math_builtin);
Opts.AssumeSaneOperatorNew = !Args.hasArg(OPT_fno_assume_sane_operator_new);
Opts.SizedDeallocation = Args.hasArg(OPT_fsized_deallocation);