r361278 - [clang][Darwin] Refactor header search path logic into the driver

Louis Dionne via cfe-commits cfe-commits at lists.llvm.org
Wed May 22 12:29:35 PDT 2019


I've set up a windows machine and I'm working on a fix. Thanks for notifying me.

Louis

> On May 21, 2019, at 21:06, Galina Kistanova <gkistanova at gmail.com> wrote:
> 
> Hello Louis,
> 
> This commit broke few tests on the next builder:
> http://lab.llvm.org:8011/builders/llvm-clang-x86_64-expensive-checks-win/builds/17776 <http://lab.llvm.org:8011/builders/llvm-clang-x86_64-expensive-checks-win/builds/17776>
> Please have a look ASAP?
> 
> . . .
> Failing Tests (4):
>     Clang :: Driver/darwin-header-search-libcxx.cpp
>     Clang :: Driver/darwin-header-search-libstdcxx.cpp
>     Clang :: Driver/darwin-header-search-system.cpp
>     LLVM :: CodeGen/AMDGPU/regbank-reassign.mir
> 
> The builder was already red and did not send any notifications.
> 
> Thanks
> 
> Galina
> 
> On Tue, May 21, 2019 at 10:45 AM Louis Dionne via cfe-commits <cfe-commits at lists.llvm.org <mailto:cfe-commits at lists.llvm.org>> wrote:
> Author: ldionne
> Date: Tue May 21 10:48:04 2019
> New Revision: 361278
> 
> URL: http://llvm.org/viewvc/llvm-project?rev=361278&view=rev <http://llvm.org/viewvc/llvm-project?rev=361278&view=rev>
> Log:
> [clang][Darwin] Refactor header search path logic into the driver
> 
> Summary:
> This commit moves the logic for determining system, resource and C++
> header search paths from CC1 to the driver. This refactor has already
> been made for several platforms, but Darwin had been left behind.
> 
> This refactor tries to implement the previous search path logic with
> perfect accuracy. In particular, the order of all include paths inside
> CC1 and all paths that were skipped because nonexistent are conserved
> after the refactor. This change was also tested against a code base
> of significant size and revealed no problems.
> 
> Reviewers: jfb, arphaman
> 
> Subscribers: nemanjai, javed.absar, kbarton, christof, jkorous, dexonsmith, jsji, cfe-commits
> 
> Tags: #clang
> 
> Differential Revision: https://reviews.llvm.org/D61963 <https://reviews.llvm.org/D61963>
> 
> Added:
>     cfe/trunk/test/Driver/Inputs/basic_darwin_sdk_libstdcxx_aarch64/
>     cfe/trunk/test/Driver/Inputs/basic_darwin_sdk_libstdcxx_aarch64/usr/
>     cfe/trunk/test/Driver/Inputs/basic_darwin_sdk_libstdcxx_aarch64/usr/include/
>     cfe/trunk/test/Driver/Inputs/basic_darwin_sdk_libstdcxx_aarch64/usr/include/c++/
>     cfe/trunk/test/Driver/Inputs/basic_darwin_sdk_libstdcxx_aarch64/usr/include/c++/4.2.1/
>     cfe/trunk/test/Driver/Inputs/basic_darwin_sdk_libstdcxx_aarch64/usr/include/c++/4.2.1/arm64-apple-darwin10/
>     cfe/trunk/test/Driver/Inputs/basic_darwin_sdk_libstdcxx_aarch64/usr/include/c++/4.2.1/arm64-apple-darwin10/.keep
>     cfe/trunk/test/Driver/Inputs/basic_darwin_sdk_libstdcxx_aarch64/usr/lib/
>     cfe/trunk/test/Driver/Inputs/basic_darwin_sdk_libstdcxx_aarch64/usr/lib/.keep
>     cfe/trunk/test/Driver/Inputs/basic_darwin_sdk_libstdcxx_arm/
>     cfe/trunk/test/Driver/Inputs/basic_darwin_sdk_libstdcxx_arm/usr/
>     cfe/trunk/test/Driver/Inputs/basic_darwin_sdk_libstdcxx_arm/usr/include/
>     cfe/trunk/test/Driver/Inputs/basic_darwin_sdk_libstdcxx_arm/usr/include/c++/
>     cfe/trunk/test/Driver/Inputs/basic_darwin_sdk_libstdcxx_arm/usr/include/c++/4.2.1/
>     cfe/trunk/test/Driver/Inputs/basic_darwin_sdk_libstdcxx_arm/usr/include/c++/4.2.1/arm-apple-darwin10/
>     cfe/trunk/test/Driver/Inputs/basic_darwin_sdk_libstdcxx_arm/usr/include/c++/4.2.1/arm-apple-darwin10/v6/
>     cfe/trunk/test/Driver/Inputs/basic_darwin_sdk_libstdcxx_arm/usr/include/c++/4.2.1/arm-apple-darwin10/v6/.keep
>     cfe/trunk/test/Driver/Inputs/basic_darwin_sdk_libstdcxx_arm/usr/include/c++/4.2.1/arm-apple-darwin10/v7/
>     cfe/trunk/test/Driver/Inputs/basic_darwin_sdk_libstdcxx_arm/usr/include/c++/4.2.1/arm-apple-darwin10/v7/.keep
>     cfe/trunk/test/Driver/Inputs/basic_darwin_sdk_libstdcxx_arm/usr/lib/
>     cfe/trunk/test/Driver/Inputs/basic_darwin_sdk_libstdcxx_arm/usr/lib/.keep
>     cfe/trunk/test/Driver/Inputs/basic_darwin_sdk_libstdcxx_ppc/
>     cfe/trunk/test/Driver/Inputs/basic_darwin_sdk_libstdcxx_ppc/usr/
>     cfe/trunk/test/Driver/Inputs/basic_darwin_sdk_libstdcxx_ppc/usr/include/
>     cfe/trunk/test/Driver/Inputs/basic_darwin_sdk_libstdcxx_ppc/usr/include/c++/
>     cfe/trunk/test/Driver/Inputs/basic_darwin_sdk_libstdcxx_ppc/usr/include/c++/4.0.0/
>     cfe/trunk/test/Driver/Inputs/basic_darwin_sdk_libstdcxx_ppc/usr/include/c++/4.0.0/powerpc-apple-darwin10/
>     cfe/trunk/test/Driver/Inputs/basic_darwin_sdk_libstdcxx_ppc/usr/include/c++/4.0.0/powerpc-apple-darwin10/ppc64/
>     cfe/trunk/test/Driver/Inputs/basic_darwin_sdk_libstdcxx_ppc/usr/include/c++/4.0.0/powerpc-apple-darwin10/ppc64/.keep
>     cfe/trunk/test/Driver/Inputs/basic_darwin_sdk_libstdcxx_ppc/usr/include/c++/4.2.1/
>     cfe/trunk/test/Driver/Inputs/basic_darwin_sdk_libstdcxx_ppc/usr/include/c++/4.2.1/powerpc-apple-darwin10/
>     cfe/trunk/test/Driver/Inputs/basic_darwin_sdk_libstdcxx_ppc/usr/include/c++/4.2.1/powerpc-apple-darwin10/ppc64/
>     cfe/trunk/test/Driver/Inputs/basic_darwin_sdk_libstdcxx_ppc/usr/include/c++/4.2.1/powerpc-apple-darwin10/ppc64/.keep
>     cfe/trunk/test/Driver/Inputs/basic_darwin_sdk_libstdcxx_ppc/usr/lib/
>     cfe/trunk/test/Driver/Inputs/basic_darwin_sdk_libstdcxx_ppc/usr/lib/.keep
>     cfe/trunk/test/Driver/Inputs/basic_darwin_sdk_libstdcxx_x86/
>     cfe/trunk/test/Driver/Inputs/basic_darwin_sdk_libstdcxx_x86/usr/
>     cfe/trunk/test/Driver/Inputs/basic_darwin_sdk_libstdcxx_x86/usr/include/
>     cfe/trunk/test/Driver/Inputs/basic_darwin_sdk_libstdcxx_x86/usr/include/c++/
>     cfe/trunk/test/Driver/Inputs/basic_darwin_sdk_libstdcxx_x86/usr/include/c++/4.0.0/
>     cfe/trunk/test/Driver/Inputs/basic_darwin_sdk_libstdcxx_x86/usr/include/c++/4.0.0/i686-apple-darwin8/
>     cfe/trunk/test/Driver/Inputs/basic_darwin_sdk_libstdcxx_x86/usr/include/c++/4.0.0/i686-apple-darwin8/.keep
>     cfe/trunk/test/Driver/Inputs/basic_darwin_sdk_libstdcxx_x86/usr/include/c++/4.2.1/
>     cfe/trunk/test/Driver/Inputs/basic_darwin_sdk_libstdcxx_x86/usr/include/c++/4.2.1/i686-apple-darwin10/
>     cfe/trunk/test/Driver/Inputs/basic_darwin_sdk_libstdcxx_x86/usr/include/c++/4.2.1/i686-apple-darwin10/x86_64/
>     cfe/trunk/test/Driver/Inputs/basic_darwin_sdk_libstdcxx_x86/usr/include/c++/4.2.1/i686-apple-darwin10/x86_64/.keep
>     cfe/trunk/test/Driver/Inputs/basic_darwin_sdk_libstdcxx_x86/usr/lib/
>     cfe/trunk/test/Driver/Inputs/basic_darwin_sdk_libstdcxx_x86/usr/lib/.keep
>     cfe/trunk/test/Driver/Inputs/basic_darwin_sdk_no_libcxx/
>     cfe/trunk/test/Driver/Inputs/basic_darwin_sdk_no_libcxx/usr/
>     cfe/trunk/test/Driver/Inputs/basic_darwin_sdk_no_libcxx/usr/include/
>     cfe/trunk/test/Driver/Inputs/basic_darwin_sdk_no_libcxx/usr/include/.keep
>     cfe/trunk/test/Driver/Inputs/basic_darwin_sdk_no_libcxx/usr/lib/
>     cfe/trunk/test/Driver/Inputs/basic_darwin_sdk_no_libcxx/usr/lib/.keep
>     cfe/trunk/test/Driver/Inputs/basic_darwin_sdk_no_libstdcxx/
>     cfe/trunk/test/Driver/Inputs/basic_darwin_sdk_no_libstdcxx/usr/
>     cfe/trunk/test/Driver/Inputs/basic_darwin_sdk_no_libstdcxx/usr/include/
>     cfe/trunk/test/Driver/Inputs/basic_darwin_sdk_no_libstdcxx/usr/include/.keep
>     cfe/trunk/test/Driver/Inputs/basic_darwin_sdk_no_libstdcxx/usr/lib/
>     cfe/trunk/test/Driver/Inputs/basic_darwin_sdk_no_libstdcxx/usr/lib/.keep
>     cfe/trunk/test/Driver/Inputs/basic_darwin_sdk_usr/
>     cfe/trunk/test/Driver/Inputs/basic_darwin_sdk_usr/usr/
>     cfe/trunk/test/Driver/Inputs/basic_darwin_sdk_usr/usr/include/
>     cfe/trunk/test/Driver/Inputs/basic_darwin_sdk_usr/usr/include/.keep
>     cfe/trunk/test/Driver/Inputs/basic_darwin_sdk_usr/usr/lib/
>     cfe/trunk/test/Driver/Inputs/basic_darwin_sdk_usr/usr/lib/.keep
>     cfe/trunk/test/Driver/Inputs/basic_darwin_sdk_usr_and_usr_local/
>     cfe/trunk/test/Driver/Inputs/basic_darwin_sdk_usr_and_usr_local/usr/
>     cfe/trunk/test/Driver/Inputs/basic_darwin_sdk_usr_and_usr_local/usr/include/
>     cfe/trunk/test/Driver/Inputs/basic_darwin_sdk_usr_and_usr_local/usr/include/.keep
>     cfe/trunk/test/Driver/Inputs/basic_darwin_sdk_usr_and_usr_local/usr/lib/
>     cfe/trunk/test/Driver/Inputs/basic_darwin_sdk_usr_and_usr_local/usr/lib/.keep
>     cfe/trunk/test/Driver/Inputs/basic_darwin_sdk_usr_and_usr_local/usr/local/
>     cfe/trunk/test/Driver/Inputs/basic_darwin_sdk_usr_and_usr_local/usr/local/include/
>     cfe/trunk/test/Driver/Inputs/basic_darwin_sdk_usr_and_usr_local/usr/local/include/.keep
>     cfe/trunk/test/Driver/Inputs/basic_darwin_sdk_usr_and_usr_local/usr/local/lib/
>     cfe/trunk/test/Driver/Inputs/basic_darwin_sdk_usr_and_usr_local/usr/local/lib/.keep
>     cfe/trunk/test/Driver/Inputs/basic_darwin_sdk_usr_local/
>     cfe/trunk/test/Driver/Inputs/basic_darwin_sdk_usr_local/usr/
>     cfe/trunk/test/Driver/Inputs/basic_darwin_sdk_usr_local/usr/local/
>     cfe/trunk/test/Driver/Inputs/basic_darwin_sdk_usr_local/usr/local/include/
>     cfe/trunk/test/Driver/Inputs/basic_darwin_sdk_usr_local/usr/local/include/.keep
>     cfe/trunk/test/Driver/Inputs/basic_darwin_sdk_usr_local/usr/local/lib/
>     cfe/trunk/test/Driver/Inputs/basic_darwin_sdk_usr_local/usr/local/lib/.keep
>     cfe/trunk/test/Driver/Inputs/basic_darwin_toolchain/
>     cfe/trunk/test/Driver/Inputs/basic_darwin_toolchain/usr/
>     cfe/trunk/test/Driver/Inputs/basic_darwin_toolchain/usr/bin/
>     cfe/trunk/test/Driver/Inputs/basic_darwin_toolchain/usr/bin/.keep
>     cfe/trunk/test/Driver/Inputs/basic_darwin_toolchain/usr/include/
>     cfe/trunk/test/Driver/Inputs/basic_darwin_toolchain/usr/include/c++/
>     cfe/trunk/test/Driver/Inputs/basic_darwin_toolchain/usr/include/c++/v1/
>     cfe/trunk/test/Driver/Inputs/basic_darwin_toolchain/usr/include/c++/v1/.keep
>     cfe/trunk/test/Driver/Inputs/basic_darwin_toolchain_no_libcxx/
>     cfe/trunk/test/Driver/Inputs/basic_darwin_toolchain_no_libcxx/usr/
>     cfe/trunk/test/Driver/Inputs/basic_darwin_toolchain_no_libcxx/usr/bin/
>     cfe/trunk/test/Driver/Inputs/basic_darwin_toolchain_no_libcxx/usr/bin/.keep
>     cfe/trunk/test/Driver/darwin-header-search-libcxx.cpp
>     cfe/trunk/test/Driver/darwin-header-search-libstdcxx.cpp
>     cfe/trunk/test/Driver/darwin-header-search-system.cpp
> Removed:
>     cfe/trunk/test/Frontend/warning-stdlibcxx-darwin.cpp
> Modified:
>     cfe/trunk/include/clang/Basic/DiagnosticDriverKinds.td
>     cfe/trunk/include/clang/Basic/DiagnosticFrontendKinds.td
>     cfe/trunk/lib/Driver/ToolChains/Darwin.cpp
>     cfe/trunk/lib/Driver/ToolChains/Darwin.h
>     cfe/trunk/lib/Frontend/InitHeaderSearch.cpp
>     cfe/trunk/test/Driver/darwin-stdlib.cpp
> 
> Modified: cfe/trunk/include/clang/Basic/DiagnosticDriverKinds.td
> URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/include/clang/Basic/DiagnosticDriverKinds.td?rev=361278&r1=361277&r2=361278&view=diff <http://llvm.org/viewvc/llvm-project/cfe/trunk/include/clang/Basic/DiagnosticDriverKinds.td?rev=361278&r1=361277&r2=361278&view=diff>
> ==============================================================================
> --- cfe/trunk/include/clang/Basic/DiagnosticDriverKinds.td (original)
> +++ cfe/trunk/include/clang/Basic/DiagnosticDriverKinds.td Tue May 21 10:48:04 2019
> @@ -453,4 +453,9 @@ def warn_drv_msp430_hwmult_no_device : W
>    "specify a MSP430 device, or -mhwmult to set hardware multiply type "
>    "explicitly.">, InGroup<InvalidCommandLineArgument>;
> 
> +def warn_drv_libstdcxx_not_found : Warning<
> +  "include path for libstdc++ headers not found; pass '-stdlib=libc++' on the "
> +  "command line to use the libc++ standard library instead">,
> +  InGroup<DiagGroup<"stdlibcxx-not-found">>;
> +
>  }
> 
> Modified: cfe/trunk/include/clang/Basic/DiagnosticFrontendKinds.td
> URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/include/clang/Basic/DiagnosticFrontendKinds.td?rev=361278&r1=361277&r2=361278&view=diff <http://llvm.org/viewvc/llvm-project/cfe/trunk/include/clang/Basic/DiagnosticFrontendKinds.td?rev=361278&r1=361277&r2=361278&view=diff>
> ==============================================================================
> --- cfe/trunk/include/clang/Basic/DiagnosticFrontendKinds.td (original)
> +++ cfe/trunk/include/clang/Basic/DiagnosticFrontendKinds.td Tue May 21 10:48:04 2019
> @@ -232,11 +232,6 @@ def err_invalid_vfs_overlay : Error<
>  def warn_option_invalid_ocl_version : Warning<
>    "OpenCL version %0 does not support the option '%1'">, InGroup<Deprecated>;
> 
> -def warn_stdlibcxx_not_found : Warning<
> -  "include path for stdlibc++ headers not found; pass '-stdlib=libc++' on the "
> -  "command line to use the libc++ standard library instead">,
> -  InGroup<DiagGroup<"stdlibcxx-not-found">>;
> -
>  def err_builtin_needs_feature : Error<"%0 needs target feature %1">;
>  def err_function_needs_feature : Error<
>    "always_inline function %1 requires target feature '%2', but would "
> 
> Modified: cfe/trunk/lib/Driver/ToolChains/Darwin.cpp
> URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Driver/ToolChains/Darwin.cpp?rev=361278&r1=361277&r2=361278&view=diff <http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Driver/ToolChains/Darwin.cpp?rev=361278&r1=361277&r2=361278&view=diff>
> ==============================================================================
> --- cfe/trunk/lib/Driver/ToolChains/Darwin.cpp (original)
> +++ cfe/trunk/lib/Driver/ToolChains/Darwin.cpp Tue May 21 10:48:04 2019
> @@ -11,6 +11,7 @@
>  #include "CommonArgs.h"
>  #include "clang/Basic/AlignedAllocation.h"
>  #include "clang/Basic/ObjCRuntime.h"
> +#include "clang/Config/config.h"
>  #include "clang/Driver/Compilation.h"
>  #include "clang/Driver/Driver.h"
>  #include "clang/Driver/DriverDiagnostic.h"
> @@ -1804,6 +1805,84 @@ void Darwin::AddDeploymentTarget(Derived
>    }
>  }
> 
> +void DarwinClang::AddClangSystemIncludeArgs(const llvm::opt::ArgList &DriverArgs,
> +                                            llvm::opt::ArgStringList &CC1Args) const {
> +  const Driver &D = getDriver();
> +
> +  llvm::StringRef Sysroot = "/";
> +  if (const Arg *A = DriverArgs.getLastArg(options::OPT_isysroot))
> +    Sysroot = A->getValue();
> +
> +  bool NoStdInc = DriverArgs.hasArg(options::OPT_nostdinc);
> +  bool NoStdlibInc = DriverArgs.hasArg(options::OPT_nostdlibinc);
> +  bool NoBuiltinInc = DriverArgs.hasArg(options::OPT_nobuiltininc);
> +
> +  // Add <sysroot>/usr/local/include
> +  if (!NoStdInc && !NoStdlibInc) {
> +      SmallString<128> P(Sysroot);
> +      llvm::sys::path::append(P, "usr", "local", "include");
> +      addSystemInclude(DriverArgs, CC1Args, P);
> +  }
> +
> +  // Add the Clang builtin headers (<resource>/include)
> +  if (!NoStdInc && !NoBuiltinInc) {
> +    SmallString<128> P(D.ResourceDir);
> +    llvm::sys::path::append(P, "include");
> +    addSystemInclude(DriverArgs, CC1Args, P);
> +  }
> +
> +  if (NoStdInc || NoStdlibInc)
> +    return;
> +
> +  // Check for configure-time C include directories.
> +  llvm::StringRef CIncludeDirs(C_INCLUDE_DIRS);
> +  if (!CIncludeDirs.empty()) {
> +    llvm::SmallVector<llvm::StringRef, 5> dirs;
> +    CIncludeDirs.split(dirs, ":");
> +    for (llvm::StringRef dir : dirs) {
> +      llvm::StringRef Prefix =
> +          llvm::sys::path::is_absolute(dir) ? llvm::StringRef(Sysroot) : "";
> +      addExternCSystemInclude(DriverArgs, CC1Args, Prefix + dir);
> +    }
> +  } else {
> +    // Otherwise, add <sysroot>/usr/include.
> +    SmallString<128> P(Sysroot);
> +    llvm::sys::path::append(P, "usr", "include");
> +    addExternCSystemInclude(DriverArgs, CC1Args, P.str());
> +  }
> +}
> +
> +bool DarwinClang::AddGnuCPlusPlusIncludePaths(const llvm::opt::ArgList &DriverArgs,
> +                                              llvm::opt::ArgStringList &CC1Args,
> +                                              llvm::SmallString<128> Base,
> +                                              llvm::StringRef Version,
> +                                              llvm::StringRef ArchDir,
> +                                              llvm::StringRef BitDir) const {
> +  llvm::sys::path::append(Base, Version);
> +
> +  // Add the base dir
> +  addSystemInclude(DriverArgs, CC1Args, Base);
> +
> +  // Add the multilib dirs
> +  {
> +    llvm::SmallString<128> P = Base;
> +    if (!ArchDir.empty())
> +      llvm::sys::path::append(P, ArchDir);
> +    if (!BitDir.empty())
> +      llvm::sys::path::append(P, BitDir);
> +    addSystemInclude(DriverArgs, CC1Args, P);
> +  }
> +
> +  // Add the backward dir
> +  {
> +    llvm::SmallString<128> P = Base;
> +    llvm::sys::path::append(P, "backward");
> +    addSystemInclude(DriverArgs, CC1Args, P);
> +  }
> +
> +  return getVFS().exists(Base);
> +}
> +
>  void DarwinClang::AddClangCXXStdlibIncludeArgs(
>      const llvm::opt::ArgList &DriverArgs,
>      llvm::opt::ArgStringList &CC1Args) const {
> @@ -1811,29 +1890,95 @@ void DarwinClang::AddClangCXXStdlibInclu
>    // CC1Args.
>    // FIXME: this should not be necessary, remove usages in the frontend
>    //        (e.g. HeaderSearchOptions::UseLibcxx) and don't pipe -stdlib.
> +  //        Also check whether this is used for setting library search paths.
>    ToolChain::AddClangCXXStdlibIncludeArgs(DriverArgs, CC1Args);
> 
>    if (DriverArgs.hasArg(options::OPT_nostdlibinc) ||
>        DriverArgs.hasArg(options::OPT_nostdincxx))
>      return;
> 
> +  llvm::SmallString<128> Sysroot;
> +  if (const Arg *A = DriverArgs.getLastArg(options::OPT_isysroot)) {
> +    Sysroot = A->getValue();
> +  } else {
> +    Sysroot = "/";
> +  }
> +
>    switch (GetCXXStdlibType(DriverArgs)) {
>    case ToolChain::CST_Libcxx: {
> -    llvm::StringRef InstallDir = getDriver().getInstalledDir();
> -    if (InstallDir.empty())
> -      break;
> -    // On Darwin, libc++ may be installed alongside the compiler in
> -    // include/c++/v1.
> -    // Get from 'foo/bin' to 'foo/include/c++/v1'.
> -    SmallString<128> P = InstallDir;
> -    // Note that InstallDir can be relative, so we have to '..' and not
> -    // parent_path.
> -    llvm::sys::path::append(P, "..", "include", "c++", "v1");
> -    addSystemInclude(DriverArgs, CC1Args, P);
> +    // On Darwin, libc++ is installed alongside the compiler in
> +    // include/c++/v1, so get from '<install>/bin' to '<install>/include/c++/v1'.
> +    {
> +      llvm::SmallString<128> P = llvm::StringRef(getDriver().getInstalledDir());
> +      // Note that P can be relative, so we have to '..' and not parent_path.
> +      llvm::sys::path::append(P, "..", "include", "c++", "v1");
> +      addSystemInclude(DriverArgs, CC1Args, P);
> +    }
> +    // Also add <sysroot>/usr/include/c++/v1 unless -nostdinc is used,
> +    // to match the legacy behavior in CC1.
> +    if (!DriverArgs.hasArg(options::OPT_nostdinc)) {
> +      llvm::SmallString<128> P = Sysroot;
> +      llvm::sys::path::append(P, "usr", "include", "c++", "v1");
> +      addSystemInclude(DriverArgs, CC1Args, P);
> +    }
>      break;
>    }
> +
>    case ToolChain::CST_Libstdcxx:
> -    // FIXME: should we do something about it?
> +    llvm::SmallString<128> UsrIncludeCxx = Sysroot;
> +    llvm::sys::path::append(UsrIncludeCxx, "usr", "include", "c++");
> +
> +    llvm::Triple::ArchType arch = getTriple().getArch();
> +    bool IsBaseFound = true;
> +    switch (arch) {
> +    default: break;
> +
> +    case llvm::Triple::ppc:
> +    case llvm::Triple::ppc64:
> +      IsBaseFound = AddGnuCPlusPlusIncludePaths(DriverArgs, CC1Args, UsrIncludeCxx,
> +                                                "4.2.1",
> +                                                "powerpc-apple-darwin10",
> +                                                arch == llvm::Triple::ppc64 ? "ppc64" : "");
> +      IsBaseFound |= AddGnuCPlusPlusIncludePaths(DriverArgs, CC1Args, UsrIncludeCxx,
> +                                                "4.0.0", "powerpc-apple-darwin10",
> +                                                 arch == llvm::Triple::ppc64 ? "ppc64" : "");
> +      break;
> +
> +    case llvm::Triple::x86:
> +    case llvm::Triple::x86_64:
> +      IsBaseFound = AddGnuCPlusPlusIncludePaths(DriverArgs, CC1Args, UsrIncludeCxx,
> +                                                "4.2.1",
> +                                                "i686-apple-darwin10",
> +                                                arch == llvm::Triple::x86_64 ? "x86_64" : "");
> +      IsBaseFound |= AddGnuCPlusPlusIncludePaths(DriverArgs, CC1Args, UsrIncludeCxx,
> +                                                "4.0.0", "i686-apple-darwin8",
> +                                                 "");
> +      break;
> +
> +    case llvm::Triple::arm:
> +    case llvm::Triple::thumb:
> +      IsBaseFound = AddGnuCPlusPlusIncludePaths(DriverArgs, CC1Args, UsrIncludeCxx,
> +                                                "4.2.1",
> +                                                "arm-apple-darwin10",
> +                                                "v7");
> +      IsBaseFound |= AddGnuCPlusPlusIncludePaths(DriverArgs, CC1Args, UsrIncludeCxx,
> +                                                "4.2.1",
> +                                                "arm-apple-darwin10",
> +                                                 "v6");
> +      break;
> +
> +    case llvm::Triple::aarch64:
> +      IsBaseFound = AddGnuCPlusPlusIncludePaths(DriverArgs, CC1Args, UsrIncludeCxx,
> +                                                "4.2.1",
> +                                                "arm64-apple-darwin10",
> +                                                "");
> +      break;
> +    }
> +
> +    if (!IsBaseFound) {
> +      getDriver().Diag(diag::warn_drv_libstdcxx_not_found);
> +    }
> +
>      break;
>    }
>  }
> 
> Modified: cfe/trunk/lib/Driver/ToolChains/Darwin.h
> URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Driver/ToolChains/Darwin.h?rev=361278&r1=361277&r2=361278&view=diff <http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Driver/ToolChains/Darwin.h?rev=361278&r1=361277&r2=361278&view=diff>
> ==============================================================================
> --- cfe/trunk/lib/Driver/ToolChains/Darwin.h (original)
> +++ cfe/trunk/lib/Driver/ToolChains/Darwin.h Tue May 21 10:48:04 2019
> @@ -503,6 +503,9 @@ public:
>        const llvm::opt::ArgList &DriverArgs,
>        llvm::opt::ArgStringList &CC1Args) const override;
> 
> +  void AddClangSystemIncludeArgs(const llvm::opt::ArgList &DriverArgs,
> +                                 llvm::opt::ArgStringList &CC1Args) const override;
> +
>    void AddCXXStdlibLibArgs(const llvm::opt::ArgList &Args,
>                             llvm::opt::ArgStringList &CmdArgs) const override;
> 
> @@ -529,6 +532,13 @@ private:
>                                 llvm::opt::ArgStringList &CmdArgs,
>                                 StringRef Sanitizer,
>                                 bool shared = true) const;
> +
> +  bool AddGnuCPlusPlusIncludePaths(const llvm::opt::ArgList &DriverArgs,
> +                                   llvm::opt::ArgStringList &CC1Args,
> +                                   llvm::SmallString<128> Base,
> +                                   llvm::StringRef Version,
> +                                   llvm::StringRef ArchDir,
> +                                   llvm::StringRef BitDir) const;
>  };
> 
>  } // end namespace toolchains
> 
> Modified: cfe/trunk/lib/Frontend/InitHeaderSearch.cpp
> URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Frontend/InitHeaderSearch.cpp?rev=361278&r1=361277&r2=361278&view=diff <http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Frontend/InitHeaderSearch.cpp?rev=361278&r1=361277&r2=361278&view=diff>
> ==============================================================================
> --- cfe/trunk/lib/Frontend/InitHeaderSearch.cpp (original)
> +++ cfe/trunk/lib/Frontend/InitHeaderSearch.cpp Tue May 21 10:48:04 2019
> @@ -210,6 +210,10 @@ void InitHeaderSearch::AddDefaultCInclud
>                                              const HeaderSearchOptions &HSOpts) {
>    llvm::Triple::OSType os = triple.getOS();
> 
> +  if (triple.isOSDarwin()) {
> +    llvm_unreachable("Include management is handled in the driver.");
> +  }
> +
>    if (HSOpts.UseStandardSystemIncludes) {
>      switch (os) {
>      case llvm::Triple::CloudABI:
> @@ -365,49 +369,7 @@ void InitHeaderSearch::AddDefaultCPlusPl
>    // FIXME: temporary hack: hard-coded paths.
> 
>    if (triple.isOSDarwin()) {
> -    bool IsBaseFound = true;
> -    switch (triple.getArch()) {
> -    default: break;
> -
> -    case llvm::Triple::ppc:
> -    case llvm::Triple::ppc64:
> -      IsBaseFound = AddGnuCPlusPlusIncludePaths("/usr/include/c++/4.2.1",
> -                                                "powerpc-apple-darwin10", "",
> -                                                "ppc64", triple);
> -      IsBaseFound |= AddGnuCPlusPlusIncludePaths("/usr/include/c++/4.0.0",
> -                                                 "powerpc-apple-darwin10", "",
> -                                                 "ppc64", triple);
> -      break;
> -
> -    case llvm::Triple::x86:
> -    case llvm::Triple::x86_64:
> -      IsBaseFound = AddGnuCPlusPlusIncludePaths("/usr/include/c++/4.2.1",
> -                                                "i686-apple-darwin10", "",
> -                                                "x86_64", triple);
> -      IsBaseFound |= AddGnuCPlusPlusIncludePaths(
> -          "/usr/include/c++/4.0.0", "i686-apple-darwin8", "", "", triple);
> -      break;
> -
> -    case llvm::Triple::arm:
> -    case llvm::Triple::thumb:
> -      IsBaseFound = AddGnuCPlusPlusIncludePaths(
> -          "/usr/include/c++/4.2.1", "arm-apple-darwin10", "v7", "", triple);
> -      IsBaseFound |= AddGnuCPlusPlusIncludePaths(
> -          "/usr/include/c++/4.2.1", "arm-apple-darwin10", "v6", "", triple);
> -      break;
> -
> -    case llvm::Triple::aarch64:
> -      IsBaseFound = AddGnuCPlusPlusIncludePaths(
> -          "/usr/include/c++/4.2.1", "arm64-apple-darwin10", "", "", triple);
> -      break;
> -    }
> -    // Warn when compiling pure C++ / Objective-C++ only.
> -    if (!IsBaseFound &&
> -        !(LangOpts.CUDA || LangOpts.OpenCL || LangOpts.RenderScript)) {
> -      Headers.getDiags().Report(SourceLocation(),
> -                                diag::warn_stdlibcxx_not_found);
> -    }
> -    return;
> +    llvm_unreachable("Include management is handled in the driver.");
>    }
> 
>    switch (os) {
> @@ -464,6 +426,16 @@ void InitHeaderSearch::AddDefaultInclude
>      break;
>    }
> 
> +  // All header search logic is handled in the Driver for Darwin.
> +  if (triple.isOSDarwin()) {
> +    if (HSOpts.UseStandardSystemIncludes) {
> +      // Add the default framework include paths on Darwin.
> +      AddPath("/System/Library/Frameworks", System, true);
> +      AddPath("/Library/Frameworks", System, true);
> +    }
> +    return;
> +  }
> +
>    if (Lang.CPlusPlus && !Lang.AsmPreprocessor &&
>        HSOpts.UseStandardCXXIncludes && HSOpts.UseStandardSystemIncludes) {
>      if (HSOpts.UseLibcxx) {
> @@ -474,14 +446,6 @@ void InitHeaderSearch::AddDefaultInclude
>    }
> 
>    AddDefaultCIncludePaths(triple, HSOpts);
> -
> -  // Add the default framework include paths on Darwin.
> -  if (HSOpts.UseStandardSystemIncludes) {
> -    if (triple.isOSDarwin()) {
> -      AddPath("/System/Library/Frameworks", System, true);
> -      AddPath("/Library/Frameworks", System, true);
> -    }
> -  }
>  }
> 
>  /// RemoveDuplicates - If there are duplicate directory entries in the specified
> 
> Added: cfe/trunk/test/Driver/Inputs/basic_darwin_sdk_libstdcxx_aarch64/usr/include/c++/4.2.1/arm64-apple-darwin10/.keep
> URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/Driver/Inputs/basic_darwin_sdk_libstdcxx_aarch64/usr/include/c%2B%2B/4.2.1/arm64-apple-darwin10/.keep?rev=361278&view=auto <http://llvm.org/viewvc/llvm-project/cfe/trunk/test/Driver/Inputs/basic_darwin_sdk_libstdcxx_aarch64/usr/include/c%2B%2B/4.2.1/arm64-apple-darwin10/.keep?rev=361278&view=auto>
> ==============================================================================
>     (empty)
> 
> Added: cfe/trunk/test/Driver/Inputs/basic_darwin_sdk_libstdcxx_aarch64/usr/lib/.keep
> URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/Driver/Inputs/basic_darwin_sdk_libstdcxx_aarch64/usr/lib/.keep?rev=361278&view=auto <http://llvm.org/viewvc/llvm-project/cfe/trunk/test/Driver/Inputs/basic_darwin_sdk_libstdcxx_aarch64/usr/lib/.keep?rev=361278&view=auto>
> ==============================================================================
>     (empty)
> 
> Added: cfe/trunk/test/Driver/Inputs/basic_darwin_sdk_libstdcxx_arm/usr/include/c++/4.2.1/arm-apple-darwin10/v6/.keep
> URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/Driver/Inputs/basic_darwin_sdk_libstdcxx_arm/usr/include/c%2B%2B/4.2.1/arm-apple-darwin10/v6/.keep?rev=361278&view=auto <http://llvm.org/viewvc/llvm-project/cfe/trunk/test/Driver/Inputs/basic_darwin_sdk_libstdcxx_arm/usr/include/c%2B%2B/4.2.1/arm-apple-darwin10/v6/.keep?rev=361278&view=auto>
> ==============================================================================
>     (empty)
> 
> Added: cfe/trunk/test/Driver/Inputs/basic_darwin_sdk_libstdcxx_arm/usr/include/c++/4.2.1/arm-apple-darwin10/v7/.keep
> URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/Driver/Inputs/basic_darwin_sdk_libstdcxx_arm/usr/include/c%2B%2B/4.2.1/arm-apple-darwin10/v7/.keep?rev=361278&view=auto <http://llvm.org/viewvc/llvm-project/cfe/trunk/test/Driver/Inputs/basic_darwin_sdk_libstdcxx_arm/usr/include/c%2B%2B/4.2.1/arm-apple-darwin10/v7/.keep?rev=361278&view=auto>
> ==============================================================================
>     (empty)
> 
> Added: cfe/trunk/test/Driver/Inputs/basic_darwin_sdk_libstdcxx_arm/usr/lib/.keep
> URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/Driver/Inputs/basic_darwin_sdk_libstdcxx_arm/usr/lib/.keep?rev=361278&view=auto <http://llvm.org/viewvc/llvm-project/cfe/trunk/test/Driver/Inputs/basic_darwin_sdk_libstdcxx_arm/usr/lib/.keep?rev=361278&view=auto>
> ==============================================================================
>     (empty)
> 
> Added: cfe/trunk/test/Driver/Inputs/basic_darwin_sdk_libstdcxx_ppc/usr/include/c++/4.0.0/powerpc-apple-darwin10/ppc64/.keep
> URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/Driver/Inputs/basic_darwin_sdk_libstdcxx_ppc/usr/include/c%2B%2B/4.0.0/powerpc-apple-darwin10/ppc64/.keep?rev=361278&view=auto <http://llvm.org/viewvc/llvm-project/cfe/trunk/test/Driver/Inputs/basic_darwin_sdk_libstdcxx_ppc/usr/include/c%2B%2B/4.0.0/powerpc-apple-darwin10/ppc64/.keep?rev=361278&view=auto>
> ==============================================================================
>     (empty)
> 
> Added: cfe/trunk/test/Driver/Inputs/basic_darwin_sdk_libstdcxx_ppc/usr/include/c++/4.2.1/powerpc-apple-darwin10/ppc64/.keep
> URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/Driver/Inputs/basic_darwin_sdk_libstdcxx_ppc/usr/include/c%2B%2B/4.2.1/powerpc-apple-darwin10/ppc64/.keep?rev=361278&view=auto <http://llvm.org/viewvc/llvm-project/cfe/trunk/test/Driver/Inputs/basic_darwin_sdk_libstdcxx_ppc/usr/include/c%2B%2B/4.2.1/powerpc-apple-darwin10/ppc64/.keep?rev=361278&view=auto>
> ==============================================================================
>     (empty)
> 
> Added: cfe/trunk/test/Driver/Inputs/basic_darwin_sdk_libstdcxx_ppc/usr/lib/.keep
> URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/Driver/Inputs/basic_darwin_sdk_libstdcxx_ppc/usr/lib/.keep?rev=361278&view=auto <http://llvm.org/viewvc/llvm-project/cfe/trunk/test/Driver/Inputs/basic_darwin_sdk_libstdcxx_ppc/usr/lib/.keep?rev=361278&view=auto>
> ==============================================================================
>     (empty)
> 
> Added: cfe/trunk/test/Driver/Inputs/basic_darwin_sdk_libstdcxx_x86/usr/include/c++/4.0.0/i686-apple-darwin8/.keep
> URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/Driver/Inputs/basic_darwin_sdk_libstdcxx_x86/usr/include/c%2B%2B/4.0.0/i686-apple-darwin8/.keep?rev=361278&view=auto <http://llvm.org/viewvc/llvm-project/cfe/trunk/test/Driver/Inputs/basic_darwin_sdk_libstdcxx_x86/usr/include/c%2B%2B/4.0.0/i686-apple-darwin8/.keep?rev=361278&view=auto>
> ==============================================================================
>     (empty)
> 
> Added: cfe/trunk/test/Driver/Inputs/basic_darwin_sdk_libstdcxx_x86/usr/include/c++/4.2.1/i686-apple-darwin10/x86_64/.keep
> URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/Driver/Inputs/basic_darwin_sdk_libstdcxx_x86/usr/include/c%2B%2B/4.2.1/i686-apple-darwin10/x86_64/.keep?rev=361278&view=auto <http://llvm.org/viewvc/llvm-project/cfe/trunk/test/Driver/Inputs/basic_darwin_sdk_libstdcxx_x86/usr/include/c%2B%2B/4.2.1/i686-apple-darwin10/x86_64/.keep?rev=361278&view=auto>
> ==============================================================================
>     (empty)
> 
> Added: cfe/trunk/test/Driver/Inputs/basic_darwin_sdk_libstdcxx_x86/usr/lib/.keep
> URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/Driver/Inputs/basic_darwin_sdk_libstdcxx_x86/usr/lib/.keep?rev=361278&view=auto <http://llvm.org/viewvc/llvm-project/cfe/trunk/test/Driver/Inputs/basic_darwin_sdk_libstdcxx_x86/usr/lib/.keep?rev=361278&view=auto>
> ==============================================================================
>     (empty)
> 
> Added: cfe/trunk/test/Driver/Inputs/basic_darwin_sdk_no_libcxx/usr/include/.keep
> URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/Driver/Inputs/basic_darwin_sdk_no_libcxx/usr/include/.keep?rev=361278&view=auto <http://llvm.org/viewvc/llvm-project/cfe/trunk/test/Driver/Inputs/basic_darwin_sdk_no_libcxx/usr/include/.keep?rev=361278&view=auto>
> ==============================================================================
>     (empty)
> 
> Added: cfe/trunk/test/Driver/Inputs/basic_darwin_sdk_no_libcxx/usr/lib/.keep
> URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/Driver/Inputs/basic_darwin_sdk_no_libcxx/usr/lib/.keep?rev=361278&view=auto <http://llvm.org/viewvc/llvm-project/cfe/trunk/test/Driver/Inputs/basic_darwin_sdk_no_libcxx/usr/lib/.keep?rev=361278&view=auto>
> ==============================================================================
>     (empty)
> 
> Added: cfe/trunk/test/Driver/Inputs/basic_darwin_sdk_no_libstdcxx/usr/include/.keep
> URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/Driver/Inputs/basic_darwin_sdk_no_libstdcxx/usr/include/.keep?rev=361278&view=auto <http://llvm.org/viewvc/llvm-project/cfe/trunk/test/Driver/Inputs/basic_darwin_sdk_no_libstdcxx/usr/include/.keep?rev=361278&view=auto>
> ==============================================================================
>     (empty)
> 
> Added: cfe/trunk/test/Driver/Inputs/basic_darwin_sdk_no_libstdcxx/usr/lib/.keep
> URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/Driver/Inputs/basic_darwin_sdk_no_libstdcxx/usr/lib/.keep?rev=361278&view=auto <http://llvm.org/viewvc/llvm-project/cfe/trunk/test/Driver/Inputs/basic_darwin_sdk_no_libstdcxx/usr/lib/.keep?rev=361278&view=auto>
> ==============================================================================
>     (empty)
> 
> Added: cfe/trunk/test/Driver/Inputs/basic_darwin_sdk_usr/usr/include/.keep
> URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/Driver/Inputs/basic_darwin_sdk_usr/usr/include/.keep?rev=361278&view=auto <http://llvm.org/viewvc/llvm-project/cfe/trunk/test/Driver/Inputs/basic_darwin_sdk_usr/usr/include/.keep?rev=361278&view=auto>
> ==============================================================================
>     (empty)
> 
> Added: cfe/trunk/test/Driver/Inputs/basic_darwin_sdk_usr/usr/lib/.keep
> URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/Driver/Inputs/basic_darwin_sdk_usr/usr/lib/.keep?rev=361278&view=auto <http://llvm.org/viewvc/llvm-project/cfe/trunk/test/Driver/Inputs/basic_darwin_sdk_usr/usr/lib/.keep?rev=361278&view=auto>
> ==============================================================================
>     (empty)
> 
> Added: cfe/trunk/test/Driver/Inputs/basic_darwin_sdk_usr_and_usr_local/usr/include/.keep
> URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/Driver/Inputs/basic_darwin_sdk_usr_and_usr_local/usr/include/.keep?rev=361278&view=auto <http://llvm.org/viewvc/llvm-project/cfe/trunk/test/Driver/Inputs/basic_darwin_sdk_usr_and_usr_local/usr/include/.keep?rev=361278&view=auto>
> ==============================================================================
>     (empty)
> 
> Added: cfe/trunk/test/Driver/Inputs/basic_darwin_sdk_usr_and_usr_local/usr/lib/.keep
> URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/Driver/Inputs/basic_darwin_sdk_usr_and_usr_local/usr/lib/.keep?rev=361278&view=auto <http://llvm.org/viewvc/llvm-project/cfe/trunk/test/Driver/Inputs/basic_darwin_sdk_usr_and_usr_local/usr/lib/.keep?rev=361278&view=auto>
> ==============================================================================
>     (empty)
> 
> Added: cfe/trunk/test/Driver/Inputs/basic_darwin_sdk_usr_and_usr_local/usr/local/include/.keep
> URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/Driver/Inputs/basic_darwin_sdk_usr_and_usr_local/usr/local/include/.keep?rev=361278&view=auto <http://llvm.org/viewvc/llvm-project/cfe/trunk/test/Driver/Inputs/basic_darwin_sdk_usr_and_usr_local/usr/local/include/.keep?rev=361278&view=auto>
> ==============================================================================
>     (empty)
> 
> Added: cfe/trunk/test/Driver/Inputs/basic_darwin_sdk_usr_and_usr_local/usr/local/lib/.keep
> URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/Driver/Inputs/basic_darwin_sdk_usr_and_usr_local/usr/local/lib/.keep?rev=361278&view=auto <http://llvm.org/viewvc/llvm-project/cfe/trunk/test/Driver/Inputs/basic_darwin_sdk_usr_and_usr_local/usr/local/lib/.keep?rev=361278&view=auto>
> ==============================================================================
>     (empty)
> 
> Added: cfe/trunk/test/Driver/Inputs/basic_darwin_sdk_usr_local/usr/local/include/.keep
> URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/Driver/Inputs/basic_darwin_sdk_usr_local/usr/local/include/.keep?rev=361278&view=auto <http://llvm.org/viewvc/llvm-project/cfe/trunk/test/Driver/Inputs/basic_darwin_sdk_usr_local/usr/local/include/.keep?rev=361278&view=auto>
> ==============================================================================
>     (empty)
> 
> Added: cfe/trunk/test/Driver/Inputs/basic_darwin_sdk_usr_local/usr/local/lib/.keep
> URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/Driver/Inputs/basic_darwin_sdk_usr_local/usr/local/lib/.keep?rev=361278&view=auto <http://llvm.org/viewvc/llvm-project/cfe/trunk/test/Driver/Inputs/basic_darwin_sdk_usr_local/usr/local/lib/.keep?rev=361278&view=auto>
> ==============================================================================
>     (empty)
> 
> Added: cfe/trunk/test/Driver/Inputs/basic_darwin_toolchain/usr/bin/.keep
> URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/Driver/Inputs/basic_darwin_toolchain/usr/bin/.keep?rev=361278&view=auto <http://llvm.org/viewvc/llvm-project/cfe/trunk/test/Driver/Inputs/basic_darwin_toolchain/usr/bin/.keep?rev=361278&view=auto>
> ==============================================================================
>     (empty)
> 
> Added: cfe/trunk/test/Driver/Inputs/basic_darwin_toolchain/usr/include/c++/v1/.keep
> URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/Driver/Inputs/basic_darwin_toolchain/usr/include/c%2B%2B/v1/.keep?rev=361278&view=auto <http://llvm.org/viewvc/llvm-project/cfe/trunk/test/Driver/Inputs/basic_darwin_toolchain/usr/include/c%2B%2B/v1/.keep?rev=361278&view=auto>
> ==============================================================================
>     (empty)
> 
> Added: cfe/trunk/test/Driver/Inputs/basic_darwin_toolchain_no_libcxx/usr/bin/.keep
> URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/Driver/Inputs/basic_darwin_toolchain_no_libcxx/usr/bin/.keep?rev=361278&view=auto <http://llvm.org/viewvc/llvm-project/cfe/trunk/test/Driver/Inputs/basic_darwin_toolchain_no_libcxx/usr/bin/.keep?rev=361278&view=auto>
> ==============================================================================
>     (empty)
> 
> Added: cfe/trunk/test/Driver/darwin-header-search-libcxx.cpp
> URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/Driver/darwin-header-search-libcxx.cpp?rev=361278&view=auto <http://llvm.org/viewvc/llvm-project/cfe/trunk/test/Driver/darwin-header-search-libcxx.cpp?rev=361278&view=auto>
> ==============================================================================
> --- cfe/trunk/test/Driver/darwin-header-search-libcxx.cpp (added)
> +++ cfe/trunk/test/Driver/darwin-header-search-libcxx.cpp Tue May 21 10:48:04 2019
> @@ -0,0 +1,78 @@
> +// General tests that the header search paths for libc++ detected by the driver
> +// and passed to CC1 are correct on Darwin platforms.
> +
> +// Check without a sysroot and without headers alongside the installation
> +// (no include path should be added, and no warning or error).
> +//
> +// RUN: %clang -no-canonical-prefixes %s -### -fsyntax-only 2>&1 \
> +// RUN:     -target x86_64-apple-darwin \
> +// RUN:     -stdlib=libc++ \
> +// RUN:     -ccc-install-dir %S/Inputs/basic_darwin_toolchain_no_libcxx/usr/bin \
> +// RUN:   | FileCheck --check-prefix=CHECK-LIBCXX-NONE %s
> +// CHECK-LIBCXX-NONE: "{{[^"]*}}clang{{[^"]*}}" "-cc1"
> +
> +// Check with only headers alongside the installation (those should be used,
> +// but we should still add /usr/include/c++/v1 after to preserve legacy).
> +//
> +// RUN: %clang -no-canonical-prefixes %s -### -fsyntax-only 2>&1 \
> +// RUN:     -target x86_64-apple-darwin \
> +// RUN:     -stdlib=libc++ \
> +// RUN:     -ccc-install-dir %S/Inputs/basic_darwin_toolchain/usr/bin \
> +// RUN:   | FileCheck -DTOOLCHAIN=%S/Inputs/basic_darwin_toolchain --check-prefix=CHECK-LIBCXX-TOOLCHAIN-1 %s
> +// CHECK-LIBCXX-TOOLCHAIN-1: "{{[^"]*}}clang{{[^"]*}}" "-cc1"
> +// CHECK-LIBCXX-TOOLCHAIN-1: "-internal-isystem" "[[TOOLCHAIN]]/usr/bin/../include/c++/v1"
> +// CHECK-LIBCXX-TOOLCHAIN-1: "-internal-isystem" "/usr/include/c++/v1"
> +//
> +// RUN: %clang -no-canonical-prefixes %s -### -fsyntax-only 2>&1 \
> +// RUN:     -target x86_64-apple-darwin \
> +// RUN:     -stdlib=libc++ \
> +// RUN:     -ccc-install-dir %S/Inputs/basic_darwin_toolchain/usr/bin \
> +// RUN:     -isysroot %S/Inputs/basic_darwin_sdk_no_libcxx \
> +// RUN:   | FileCheck -DTOOLCHAIN=%S/Inputs/basic_darwin_toolchain --check-prefix=CHECK-LIBCXX-TOOLCHAIN-2 %s
> +// CHECK-LIBCXX-TOOLCHAIN-2: "{{[^"]*}}clang{{[^"]*}}" "-cc1"
> +// CHECK-LIBCXX-TOOLCHAIN-2: "-internal-isystem" "[[TOOLCHAIN]]/usr/bin/../include/c++/v1"
> +
> +// Check with both headers in the sysroot and headers alongside the installation
> +// (the headers in <sysroot> should be added after the toolchain headers).
> +//
> +// RUN: %clang -no-canonical-prefixes %s -### -fsyntax-only 2>&1 \
> +// RUN:     -target x86_64-apple-darwin \
> +// RUN:     -stdlib=libc++ \
> +// RUN:     -ccc-install-dir %S/Inputs/basic_darwin_toolchain/usr/bin \
> +// RUN:     -resource-dir=%S/Inputs/resource_dir \
> +// RUN:     -isysroot %S/Inputs/basic_darwin_sdk_usr \
> +// RUN:   | FileCheck -DSYSROOT=%S/Inputs/basic_darwin_sdk_usr \
> +// RUN:               -DTOOLCHAIN=%S/Inputs/basic_darwin_toolchain \
> +// RUN:               --check-prefix=CHECK-LIBCXX-SYSROOT_AND_TOOLCHAIN-1 %s
> +// CHECK-LIBCXX-SYSROOT_AND_TOOLCHAIN-1: "{{[^"]*}}clang{{[^"]*}}" "-cc1"
> +// CHECK-LIBCXX-SYSROOT_AND_TOOLCHAIN-1: "-internal-isystem" "[[TOOLCHAIN]]/usr/bin/../include/c++/v1"
> +// CHECK-LIBCXX-SYSROOT_AND_TOOLCHAIN-1: "-internal-isystem" "[[SYSROOT]]/usr/include/c++/v1"
> +
> +// Make sure that using -nostdinc or -nostdlibinc will drop the non-toolchain
> +// C++ library include paths (so all except <toolchain>/usr/bin/../include/c++/v1).
> +//
> +// RUN: %clang -no-canonical-prefixes %s -### -fsyntax-only 2>&1 \
> +// RUN:     -target x86_64-apple-darwin \
> +// RUN:     -ccc-install-dir %S/Inputs/basic_darwin_toolchain/usr/bin \
> +// RUN:     -resource-dir=%S/Inputs/resource_dir \
> +// RUN:     -isysroot %S/Inputs/basic_darwin_sdk_usr \
> +// RUN:     -nostdinc \
> +// RUN:   | FileCheck -DSYSROOT=%S/Inputs/basic_darwin_sdk_usr \
> +// RUN:               -DTOOLCHAIN=%S/Inputs/basic_darwin_toolchain \
> +// RUN:               --check-prefix=CHECK-LIBCXX-NOSTDINC %s
> +// CHECK-LIBCXX-NOSTDINC: "{{[^"]*}}clang{{[^"]*}}" "-cc1"
> +// CHECK-LIBCXX-NOSTDINC: "-internal-isystem" "[[TOOLCHAIN]]/usr/bin/../include/c++/v1"
> +// CHECK-LIBCXX-NOSTDINC-NOT: "-internal-isystem" "[[SYSROOT]]/usr/include/c++/v1"
> +//
> +// RUN: %clang -no-canonical-prefixes %s -### -fsyntax-only 2>&1 \
> +// RUN:     -target x86_64-apple-darwin \
> +// RUN:     -ccc-install-dir %S/Inputs/basic_darwin_toolchain/usr/bin \
> +// RUN:     -resource-dir=%S/Inputs/resource_dir \
> +// RUN:     -isysroot %S/Inputs/basic_darwin_sdk_usr \
> +// RUN:     -nostdinc \
> +// RUN:   | FileCheck -DSYSROOT=%S/Inputs/basic_darwin_sdk_usr \
> +// RUN:               -DTOOLCHAIN=%S/Inputs/basic_darwin_toolchain \
> +// RUN:               --check-prefix=CHECK-LIBCXX-NOSTDLIBINC %s
> +// CHECK-LIBCXX-NOSTDLIBINC: "{{[^"]*}}clang{{[^"]*}}" "-cc1"
> +// CHECK-LIBCXX-NOSTDLIBINC: "-internal-isystem" "[[TOOLCHAIN]]/usr/bin/../include/c++/v1"
> +// CHECK-LIBCXX-NOSTDLIBINC-NOT: "-internal-isystem" "[[SYSROOT]]/usr/include/c++/v1"
> 
> Added: cfe/trunk/test/Driver/darwin-header-search-libstdcxx.cpp
> URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/Driver/darwin-header-search-libstdcxx.cpp?rev=361278&view=auto <http://llvm.org/viewvc/llvm-project/cfe/trunk/test/Driver/darwin-header-search-libstdcxx.cpp?rev=361278&view=auto>
> ==============================================================================
> --- cfe/trunk/test/Driver/darwin-header-search-libstdcxx.cpp (added)
> +++ cfe/trunk/test/Driver/darwin-header-search-libstdcxx.cpp Tue May 21 10:48:04 2019
> @@ -0,0 +1,118 @@
> +// General tests that the header search paths for libstdc++ detected by the
> +// driver and passed to CC1 are correct on Darwin platforms.
> +
> +// Check ppc and ppc64
> +//
> +// RUN: %clang -no-canonical-prefixes %s -### -fsyntax-only 2>&1 \
> +// RUN:     -target ppc-apple-darwin \
> +// RUN:     -stdlib=libstdc++ \
> +// RUN:     -isysroot %S/Inputs/basic_darwin_sdk_libstdcxx_ppc \
> +// RUN:   | FileCheck -DSYSROOT=%S/Inputs/basic_darwin_sdk_libstdcxx_ppc --check-prefix=CHECK-LIBSTDCXX-PPC %s
> +// CHECK-LIBSTDCXX-PPC: "{{[^"]*}}clang{{[^"]*}}" "-cc1"
> +// CHECK-LIBSTDCXX-PPC: "-internal-isystem" "[[SYSROOT]]/usr/include/c++/4.2.1
> +// CHECK-LIBSTDCXX-PPC: "-internal-isystem" "[[SYSROOT]]/usr/include/c++/4.2.1/powerpc-apple-darwin10"
> +// CHECK-LIBSTDCXX-PPC: "-internal-isystem" "[[SYSROOT]]/usr/include/c++/4.2.1/backward"
> +// CHECK-LIBSTDCXX-PPC: "-internal-isystem" "[[SYSROOT]]/usr/include/c++/4.0.0"
> +// CHECK-LIBSTDCXX-PPC: "-internal-isystem" "[[SYSROOT]]/usr/include/c++/4.0.0/powerpc-apple-darwin10"
> +// CHECK-LIBSTDCXX-PPC: "-internal-isystem" "[[SYSROOT]]/usr/include/c++/4.0.0/backward"
> +//
> +// RUN: %clang -no-canonical-prefixes %s -### -fsyntax-only 2>&1 \
> +// RUN:     -target ppc64-apple-darwin \
> +// RUN:     -stdlib=libstdc++ \
> +// RUN:     -isysroot %S/Inputs/basic_darwin_sdk_libstdcxx_ppc \
> +// RUN:   | FileCheck -DSYSROOT=%S/Inputs/basic_darwin_sdk_libstdcxx_ppc --check-prefix=CHECK-LIBSTDCXX-PPC64 %s
> +// CHECK-LIBSTDCXX-PPC64: "{{[^"]*}}clang{{[^"]*}}" "-cc1"
> +// CHECK-LIBSTDCXX-PPC64: "-internal-isystem" "[[SYSROOT]]/usr/include/c++/4.2.1"
> +// CHECK-LIBSTDCXX-PPC64: "-internal-isystem" "[[SYSROOT]]/usr/include/c++/4.2.1/powerpc-apple-darwin10/ppc64"
> +// CHECK-LIBSTDCXX-PPC64: "-internal-isystem" "[[SYSROOT]]/usr/include/c++/4.2.1/backward"
> +// CHECK-LIBSTDCXX-PPC64: "-internal-isystem" "[[SYSROOT]]/usr/include/c++/4.0.0"
> +// CHECK-LIBSTDCXX-PPC64: "-internal-isystem" "[[SYSROOT]]/usr/include/c++/4.0.0/powerpc-apple-darwin10/ppc64"
> +// CHECK-LIBSTDCXX-PPC64: "-internal-isystem" "[[SYSROOT]]/usr/include/c++/4.0.0/backward"
> +
> +// Check x86 and x86_64
> +//
> +// RUN: %clang -no-canonical-prefixes %s -### -fsyntax-only 2>&1 \
> +// RUN:     -target i686-apple-darwin \
> +// RUN:     -stdlib=libstdc++ \
> +// RUN:     -isysroot %S/Inputs/basic_darwin_sdk_libstdcxx_x86 \
> +// RUN:   | FileCheck -DSYSROOT=%S/Inputs/basic_darwin_sdk_libstdcxx_x86 --check-prefix=CHECK-LIBSTDCXX-X86 %s
> +// CHECK-LIBSTDCXX-X86: "{{[^"]*}}clang{{[^"]*}}" "-cc1"
> +// CHECK-LIBSTDCXX-X86: "-internal-isystem" "[[SYSROOT]]/usr/include/c++/4.2.1"
> +// CHECK-LIBSTDCXX-X86: "-internal-isystem" "[[SYSROOT]]/usr/include/c++/4.2.1/i686-apple-darwin10"
> +// CHECK-LIBSTDCXX-X86: "-internal-isystem" "[[SYSROOT]]/usr/include/c++/4.2.1/backward"
> +// CHECK-LIBSTDCXX-X86: "-internal-isystem" "[[SYSROOT]]/usr/include/c++/4.0.0"
> +// CHECK-LIBSTDCXX-X86: "-internal-isystem" "[[SYSROOT]]/usr/include/c++/4.0.0/i686-apple-darwin8"
> +// CHECK-LIBSTDCXX-X86: "-internal-isystem" "[[SYSROOT]]/usr/include/c++/4.0.0/backward"
> +//
> +// RUN: %clang -no-canonical-prefixes %s -### -fsyntax-only 2>&1 \
> +// RUN:     -target x86_64-apple-darwin \
> +// RUN:     -stdlib=libstdc++ \
> +// RUN:     -isysroot %S/Inputs/basic_darwin_sdk_libstdcxx_x86 \
> +// RUN:   | FileCheck -DSYSROOT=%S/Inputs/basic_darwin_sdk_libstdcxx_x86 --check-prefix=CHECK-LIBSTDCXX-X86_64 %s
> +// CHECK-LIBSTDCXX-X86_64: "{{[^"]*}}clang{{[^"]*}}" "-cc1"
> +// CHECK-LIBSTDCXX-X86_64: "-internal-isystem" "[[SYSROOT]]/usr/include/c++/4.2.1"
> +// CHECK-LIBSTDCXX-X86_64: "-internal-isystem" "[[SYSROOT]]/usr/include/c++/4.2.1/i686-apple-darwin10/x86_64"
> +// CHECK-LIBSTDCXX-X86_64: "-internal-isystem" "[[SYSROOT]]/usr/include/c++/4.2.1/backward"
> +// CHECK-LIBSTDCXX-X86_64: "-internal-isystem" "[[SYSROOT]]/usr/include/c++/4.0.0"
> +// CHECK-LIBSTDCXX-X86_64: "-internal-isystem" "[[SYSROOT]]/usr/include/c++/4.0.0/i686-apple-darwin8"
> +// CHECK-LIBSTDCXX-X86_64: "-internal-isystem" "[[SYSROOT]]/usr/include/c++/4.0.0/backward"
> +
> +// Check arm and thumb
> +//
> +// RUN: %clang -no-canonical-prefixes %s -### -fsyntax-only 2>&1 \
> +// RUN:     -target arm-apple-darwin \
> +// RUN:     -stdlib=libstdc++ \
> +// RUN:     -isysroot %S/Inputs/basic_darwin_sdk_libstdcxx_arm \
> +// RUN:   | FileCheck -DSYSROOT=%S/Inputs/basic_darwin_sdk_libstdcxx_arm --check-prefix=CHECK-LIBSTDCXX-ARM %s
> +// CHECK-LIBSTDCXX-ARM: "{{[^"]*}}clang{{[^"]*}}" "-cc1"
> +// CHECK-LIBSTDCXX-ARM: "-internal-isystem" "[[SYSROOT]]/usr/include/c++/4.2.1"
> +// CHECK-LIBSTDCXX-ARM: "-internal-isystem" "[[SYSROOT]]/usr/include/c++/4.2.1/arm-apple-darwin10/v7"
> +// CHECK-LIBSTDCXX-ARM: "-internal-isystem" "[[SYSROOT]]/usr/include/c++/4.2.1/backward"
> +// CHECK-LIBSTDCXX-ARM: "-internal-isystem" "[[SYSROOT]]/usr/include/c++/4.2.1"
> +// CHECK-LIBSTDCXX-ARM: "-internal-isystem" "[[SYSROOT]]/usr/include/c++/4.2.1/arm-apple-darwin10/v6"
> +// CHECK-LIBSTDCXX-ARM: "-internal-isystem" "[[SYSROOT]]/usr/include/c++/4.2.1/backward"
> +//
> +// RUN: %clang -no-canonical-prefixes %s -### -fsyntax-only 2>&1 \
> +// RUN:     -target arm-apple-darwin \
> +// RUN:     -stdlib=libstdc++ \
> +// RUN:     -isysroot %S/Inputs/basic_darwin_sdk_libstdcxx_arm \
> +// RUN:   | FileCheck -DSYSROOT=%S/Inputs/basic_darwin_sdk_libstdcxx_arm --check-prefix=CHECK-LIBSTDCXX-THUMB %s
> +// CHECK-LIBSTDCXX-THUMB: "{{[^"]*}}clang{{[^"]*}}" "-cc1"
> +// CHECK-LIBSTDCXX-THUMB: "-internal-isystem" "[[SYSROOT]]/usr/include/c++/4.2.1"
> +// CHECK-LIBSTDCXX-THUMB: "-internal-isystem" "[[SYSROOT]]/usr/include/c++/4.2.1/arm-apple-darwin10/v7"
> +// CHECK-LIBSTDCXX-THUMB: "-internal-isystem" "[[SYSROOT]]/usr/include/c++/4.2.1/backward"
> +// CHECK-LIBSTDCXX-THUMB: "-internal-isystem" "[[SYSROOT]]/usr/include/c++/4.2.1"
> +// CHECK-LIBSTDCXX-THUMB: "-internal-isystem" "[[SYSROOT]]/usr/include/c++/4.2.1/arm-apple-darwin10/v6"
> +// CHECK-LIBSTDCXX-THUMB: "-internal-isystem" "[[SYSROOT]]/usr/include/c++/4.2.1/backward"
> +
> +// Check aarch64
> +//
> +// RUN: %clang -no-canonical-prefixes %s -### -fsyntax-only 2>&1 \
> +// RUN:     -target arm64-apple-darwin \
> +// RUN:     -stdlib=libstdc++ \
> +// RUN:     -isysroot %S/Inputs/basic_darwin_sdk_libstdcxx_aarch64 \
> +// RUN:   | FileCheck -DSYSROOT=%S/Inputs/basic_darwin_sdk_libstdcxx_aarch64 --check-prefix=CHECK-LIBSTDCXX-AARCH64 %s
> +// CHECK-LIBSTDCXX-AARCH64: "{{[^"]*}}clang{{[^"]*}}" "-cc1"
> +// CHECK-LIBSTDCXX-AARCH64: "-internal-isystem" "[[SYSROOT]]/usr/include/c++/4.2.1"
> +// CHECK-LIBSTDCXX-AARCH64: "-internal-isystem" "[[SYSROOT]]/usr/include/c++/4.2.1/arm64-apple-darwin10"
> +// CHECK-LIBSTDCXX-AARCH64: "-internal-isystem" "[[SYSROOT]]/usr/include/c++/4.2.1/backward"
> +
> +// Make sure we issue a warning when we can't find the path
> +//
> +// RUN: %clang -no-canonical-prefixes %s -fsyntax-only 2>&1 \
> +// RUN:     -target x86_64-apple-darwin \
> +// RUN:     -stdlib=libstdc++ \
> +// RUN:     -isysroot %S/Inputs/basic_darwin_sdk_no_libstdcxx \
> +// RUN:   | FileCheck --check-prefix=CHECK-LIBSTDCXX-MISSING %s
> +// CHECK-LIBSTDCXX-MISSING: clang: warning: include path for libstdc++ headers not found; pass '-stdlib=libc++' on the command line to use the libc++ standard library instead
> +//
> +// RUN: %clang %s -target x86_64-apple-darwin -fsyntax-only 2>&1 \
> +// RUN:           -isysroot %S/Inputs/basic_darwin_sdk_no_libstdcxx \
> +// RUN:           -stdlib=libc++ \
> +// RUN:    | FileCheck -allow-empty --check-prefix=CHECK-LIBSTDCXX-MISSING-1 %s
> +// CHECK-LIBSTDCXX-MISSING-1-NOT: warning
> +//
> +// RUN: %clang %s -target x86_64-apple-darwin -fsyntax-only 2>&1 \
> +// RUN:           -isysroot %S/Inputs/basic_darwin_sdk_no_libstdcxx \
> +// RUN:    | FileCheck -allow-empty --check-prefix=CHECK-LIBSTDCXX-MISSING-2 %s
> +// CHECK-LIBSTDCXX-MISSING-2-NOT: warning
> 
> Added: cfe/trunk/test/Driver/darwin-header-search-system.cpp
> URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/Driver/darwin-header-search-system.cpp?rev=361278&view=auto <http://llvm.org/viewvc/llvm-project/cfe/trunk/test/Driver/darwin-header-search-system.cpp?rev=361278&view=auto>
> ==============================================================================
> --- cfe/trunk/test/Driver/darwin-header-search-system.cpp (added)
> +++ cfe/trunk/test/Driver/darwin-header-search-system.cpp Tue May 21 10:48:04 2019
> @@ -0,0 +1,80 @@
> +// General tests that the system header search paths detected by the driver
> +// and passed to CC1 are correct on Darwin platforms.
> +
> +// Check system headers (everything below <sysroot> and <resource-dir>)
> +//
> +// RUN: %clang -no-canonical-prefixes %s -### -fsyntax-only 2>&1 \
> +// RUN:     -target x86_64-apple-darwin \
> +// RUN:     -ccc-install-dir %S/Inputs/basic_darwin_toolchain_no_libcxx/usr/bin \
> +// RUN:     -resource-dir=%S/Inputs/resource_dir \
> +// RUN:     -isysroot %S/Inputs/basic_darwin_sdk_usr_and_usr_local \
> +// RUN:   | FileCheck -DSYSROOT=%S/Inputs/basic_darwin_sdk_usr_and_usr_local \
> +// RUN:               -DRESOURCE=%S/Inputs/resource_dir \
> +// RUN:               --check-prefix=CHECK-SYSTEM %s
> +// CHECK-SYSTEM: "{{[^"]*}}clang{{[^"]*}}" "-cc1"
> +// CHECK-SYSTEM: "-internal-isystem" "[[SYSROOT]]/usr/local/include"
> +// CHECK-SYSTEM: "-internal-isystem" "[[RESOURCE]]/include"
> +// CHECK-SYSTEM: "-internal-externc-isystem" "[[SYSROOT]]/usr/include"
> +
> +// Make sure that using -nobuiltininc will drop resource headers
> +//
> +// RUN: %clang -no-canonical-prefixes %s -### -fsyntax-only 2>&1 \
> +// RUN:     -target x86_64-apple-darwin \
> +// RUN:     -ccc-install-dir %S/Inputs/basic_darwin_toolchain_no_libcxx/usr/bin \
> +// RUN:     -resource-dir=%S/Inputs/resource_dir \
> +// RUN:     -isysroot %S/Inputs/basic_darwin_sdk_usr_and_usr_local \
> +// RUN:     -nobuiltininc \
> +// RUN:   | FileCheck -DSYSROOT=%S/Inputs/basic_darwin_sdk_usr_and_usr_local \
> +// RUN:               -DRESOURCE=%S/Inputs/resource_dir \
> +// RUN:               --check-prefix=CHECK-NOBUILTININC %s
> +// CHECK-NOBUILTININC: "{{[^"]*}}clang{{[^"]*}}" "-cc1"
> +// CHECK-NOBUILTININC: "-internal-isystem" "[[SYSROOT]]/usr/local/include"
> +// CHECK-NOBUILTININC-NOT: "-internal-isystem" "[[RESOURCE]]/include"
> +// CHECK-NOBUILTININC: "-internal-externc-isystem" "[[SYSROOT]]/usr/include"
> +
> +// Make sure that using -nostdlibinc will drop <sysroot>/usr/local/include and
> +// <sysroot>/usr/include.
> +//
> +// RUN: %clang -no-canonical-prefixes %s -### -fsyntax-only 2>&1 \
> +// RUN:     -target x86_64-apple-darwin \
> +// RUN:     -ccc-install-dir %S/Inputs/basic_darwin_toolchain_no_libcxx/usr/bin \
> +// RUN:     -resource-dir=%S/Inputs/resource_dir \
> +// RUN:     -isysroot %S/Inputs/basic_darwin_sdk_usr_and_usr_local \
> +// RUN:     -nostdlibinc \
> +// RUN:   | FileCheck -DSYSROOT=%S/Inputs/basic_darwin_sdk_usr_and_usr_local \
> +// RUN:               -DRESOURCE=%S/Inputs/resource_dir \
> +// RUN:               --check-prefix=CHECK-NOSTDLIBINC %s
> +// CHECK-NOSTDLIBINC: "{{[^"]*}}clang{{[^"]*}}" "-cc1"
> +// CHECK-NOSTDLIBINC-NOT: "-internal-isystem" "[[SYSROOT]]/usr/local/include"
> +// CHECK-NOSTDLIBINC: "-internal-isystem" "[[RESOURCE]]/include"
> +// CHECK-NOSTDLIBINC-NOT: "-internal-externc-isystem" "[[SYSROOT]]/usr/include"
> +
> +// Make sure that -nostdinc drops all the system include paths, including
> +// <resource>/include.
> +//
> +// RUN: %clang -no-canonical-prefixes %s -### -fsyntax-only 2>&1 \
> +// RUN:     -target x86_64-apple-darwin \
> +// RUN:     -ccc-install-dir %S/Inputs/basic_darwin_toolchain_no_libcxx/usr/bin \
> +// RUN:     -resource-dir=%S/Inputs/resource_dir \
> +// RUN:     -isysroot %S/Inputs/basic_darwin_sdk_usr_and_usr_local \
> +// RUN:     -nostdinc \
> +// RUN:   | FileCheck -DSYSROOT=%S/Inputs/basic_darwin_sdk_usr_and_usr_local \
> +// RUN:               -DRESOURCE=%S/Inputs/resource_dir \
> +// RUN:               --check-prefix=CHECK-NOSTDINC %s
> +// CHECK-NOSTDINC: "{{[^"]*}}clang{{[^"]*}}" "-cc1"
> +// CHECK-NOSTDINC-NOT: "-internal-isystem" "[[SYSROOT]]/usr/local/include"
> +// CHECK-NOSTDINC-NOT: "-internal-isystem" "[[RESOURCE]]/include"
> +// CHECK-NOSTDINC-NOT: "-internal-externc-isystem" "[[SYSROOT]]/usr/include"
> +
> +// Check search paths without -isysroot
> +//
> +// RUN: %clang -no-canonical-prefixes %s -### -fsyntax-only 2>&1 \
> +// RUN:     -target x86_64-apple-darwin \
> +// RUN:     -ccc-install-dir %S/Inputs/basic_darwin_toolchain_no_libcxx/usr/bin \
> +// RUN:     -resource-dir=%S/Inputs/resource_dir \
> +// RUN:   | FileCheck -DRESOURCE=%S/Inputs/resource_dir \
> +// RUN:               --check-prefix=CHECK-NOSYSROOT %s
> +// CHECK-NOSYSROOT: "{{[^"]*}}clang{{[^"]*}}" "-cc1"
> +// CHECK-NOSYSROOT: "-internal-isystem" "/usr/local/include"
> +// CHECK-NOSYSROOT: "-internal-isystem" "[[RESOURCE]]/include"
> +// CHECK-NOSYSROOT: "-internal-externc-isystem" "/usr/include"
> 
> Modified: cfe/trunk/test/Driver/darwin-stdlib.cpp
> URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/Driver/darwin-stdlib.cpp?rev=361278&r1=361277&r2=361278&view=diff <http://llvm.org/viewvc/llvm-project/cfe/trunk/test/Driver/darwin-stdlib.cpp?rev=361278&r1=361277&r2=361278&view=diff>
> ==============================================================================
> --- cfe/trunk/test/Driver/darwin-stdlib.cpp (original)
> +++ cfe/trunk/test/Driver/darwin-stdlib.cpp Tue May 21 10:48:04 2019
> @@ -3,19 +3,12 @@
>  // XFAIL: default-cxx-stdlib-set
> 
>  // RUN: %clang -target x86_64-apple-darwin -ccc-install-dir %S/Inputs/darwin_toolchain_tree/bin/ -arch arm64 -miphoneos-version-min=7.0 %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-LIBCXX
> -// RUN: %clang -target x86_64-apple-darwin -ccc-install-dir %S/Inputs/darwin_toolchain_tree/bin/ -mmacosx-version-min=10.8 %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-LIBSTDCXX
> +// RUN: %clang -target x86_64-apple-darwin -ccc-install-dir %S/Inputs/darwin_toolchain_tree/bin/ -mmacosx-version-min=10.8 -Wno-stdlibcxx-not-found %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-LIBSTDCXX
>  // RUN: %clang -target x86_64-apple-darwin -ccc-install-dir %S/Inputs/darwin_toolchain_tree/bin/ -mmacosx-version-min=10.9 %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-LIBCXX
> -// RUN: %clang -target x86_64-apple-darwin -ccc-install-dir %S/Inputs/darwin_toolchain_tree/bin/ -arch armv7s -miphoneos-version-min=6.1 %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-LIBSTDCXX
> +// RUN: %clang -target x86_64-apple-darwin -ccc-install-dir %S/Inputs/darwin_toolchain_tree/bin/ -arch armv7s -miphoneos-version-min=6.1 -Wno-stdlibcxx-not-found %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-LIBSTDCXX
>  // RUN: %clang -target x86_64-apple-darwin -ccc-install-dir %S/Inputs/darwin_toolchain_tree/bin/ -arch armv7s -miphoneos-version-min=7.0 %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-LIBCXX
>  // RUN: %clang -target x86_64-apple-darwin -ccc-install-dir %S/Inputs/darwin_toolchain_tree/bin/ -arch armv7k %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-LIBCXX
> 
> -// The purpose of this test is that the libc++ headers should be found
> -// properly. We also pass -stdlib=libc++ to make sure the logic to add the
> -// optional absolute include for libc++ from InitHeaderSearch.cpp also fires.
> -
>  // CHECK-LIBCXX: "-stdlib=libc++"
> -// CHECK-LIBCXX: "-internal-isystem" "{{[^"]*}}{{/|\\\\}}Inputs{{/|\\\\}}darwin_toolchain_tree{{/|\\\\}}bin{{/|\\\\}}..{{/|\\\\}}include{{/|\\\\}}c++{{/|\\\\}}v1"
> -
>  // CHECK-LIBSTDCXX-NOT: -stdlib=libc++
>  // CHECK-LIBSTDCXX-NOT: -stdlib=libstdc++
> -// CHECK-LIBSTDCXX-NOT: -internal-isystem
> 
> Removed: cfe/trunk/test/Frontend/warning-stdlibcxx-darwin.cpp
> URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/Frontend/warning-stdlibcxx-darwin.cpp?rev=361277&view=auto <http://llvm.org/viewvc/llvm-project/cfe/trunk/test/Frontend/warning-stdlibcxx-darwin.cpp?rev=361277&view=auto>
> ==============================================================================
> --- cfe/trunk/test/Frontend/warning-stdlibcxx-darwin.cpp (original)
> +++ cfe/trunk/test/Frontend/warning-stdlibcxx-darwin.cpp (removed)
> @@ -1,6 +0,0 @@
> -// RUN: %clang -cc1 -triple arm64-apple-ios6.0.0 -isysroot %S/doesnotexist %s 2>&1 | FileCheck %s
> -// RUN: %clang -cc1 -triple arm64-apple-ios6.0.0 -isysroot %S/doesnotexist -stdlib=libc++ %s -verify
> -// RUN: %clang -cc1 -x c++-cpp-output -triple arm64-apple-ios6.0.0 -isysroot %S/doesnotexist %s -verify
> -// CHECK: include path for stdlibc++ headers not found; pass '-stdlib=libc++' on the command line to use the libc++ standard library instead
> -
> -// expected-no-diagnostics
> 
> 
> _______________________________________________
> cfe-commits mailing list
> cfe-commits at lists.llvm.org <mailto:cfe-commits at lists.llvm.org>
> https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits <https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits>

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