Imported Upstream version 6.10.0.49

Former-commit-id: 1d6753294b2993e1fbf92de9366bb9544db4189b

external/llvm-project/clang/unittests/Driver/CMakeLists.txt

@@ -0,0 +1,17 @@
+set(LLVM_LINK_COMPONENTS
+  ${LLVM_TARGETS_TO_BUILD}
+  Support
+  Option
+  )
+
+add_clang_unittest(ClangDriverTests
+  DistroTest.cpp
+  ToolChainTest.cpp
+  MultilibTest.cpp
+  )
+
+target_link_libraries(ClangDriverTests
+  PRIVATE
+  clangDriver
+  clangBasic
+  )

external/llvm-project/clang/unittests/Driver/DistroTest.cpp

@@ -0,0 +1,305 @@
+//===- unittests/Driver/DistroTest.cpp --- ToolChains tests ---------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// Unit tests for Distro detection.
+//
+//===----------------------------------------------------------------------===//
+
+#include "clang/Driver/Distro.h"
+#include "clang/Basic/VirtualFileSystem.h"
+#include "llvm/Support/raw_ostream.h"
+#include "gtest/gtest.h"
+using namespace clang;
+using namespace clang::driver;
+
+namespace {
+
+// The tests include all release-related files for each distribution
+// in the VFS, in order to make sure that earlier tests do not
+// accidentally result in incorrect distribution guess.
+
+TEST(DistroTest, DetectUbuntu) {
+  vfs::InMemoryFileSystem UbuntuTrustyFileSystem;
+  // Ubuntu uses Debian Sid version.
+  UbuntuTrustyFileSystem.addFile("/etc/debian_version", 0,
+      llvm::MemoryBuffer::getMemBuffer("jessie/sid\n"));
+  UbuntuTrustyFileSystem.addFile("/etc/lsb-release", 0,
+      llvm::MemoryBuffer::getMemBuffer("DISTRIB_ID=Ubuntu\n"
+                                       "DISTRIB_RELEASE=14.04\n"
+                                       "DISTRIB_CODENAME=trusty\n"
+                                       "DISTRIB_DESCRIPTION=\"Ubuntu 14.04 LTS\"\n"));
+  UbuntuTrustyFileSystem.addFile("/etc/os-release", 0,
+      llvm::MemoryBuffer::getMemBuffer("NAME=\"Ubuntu\"\n"
+                                       "VERSION=\"14.04, Trusty Tahr\"\n"
+                                       "ID=ubuntu\n"
+                                       "ID_LIKE=debian\n"
+                                       "PRETTY_NAME=\"Ubuntu 14.04 LTS\"\n"
+                                       "VERSION_ID=\"14.04\"\n"
+                                       "HOME_URL=\"http://www.ubuntu.com/\"\n"
+                                       "SUPPORT_URL=\"http://help.ubuntu.com/\"\n"
+                                       "BUG_REPORT_URL=\"http://bugs.launchpad.net/ubuntu/\"\n"));
+
+  Distro UbuntuTrusty{UbuntuTrustyFileSystem};
+  ASSERT_EQ(Distro(Distro::UbuntuTrusty), UbuntuTrusty);
+  ASSERT_TRUE(UbuntuTrusty.IsUbuntu());
+  ASSERT_FALSE(UbuntuTrusty.IsRedhat());
+  ASSERT_FALSE(UbuntuTrusty.IsOpenSUSE());
+  ASSERT_FALSE(UbuntuTrusty.IsDebian());
+
+  vfs::InMemoryFileSystem UbuntuYakketyFileSystem;
+  UbuntuYakketyFileSystem.addFile("/etc/debian_version", 0,
+      llvm::MemoryBuffer::getMemBuffer("stretch/sid\n"));
+  UbuntuYakketyFileSystem.addFile("/etc/lsb-release", 0,
+      llvm::MemoryBuffer::getMemBuffer("DISTRIB_ID=Ubuntu\n"
+                                       "DISTRIB_RELEASE=16.10\n"
+                                       "DISTRIB_CODENAME=yakkety\n"
+                                       "DISTRIB_DESCRIPTION=\"Ubuntu 16.10\"\n"));
+  UbuntuYakketyFileSystem.addFile("/etc/os-release", 0,
+      llvm::MemoryBuffer::getMemBuffer("NAME=\"Ubuntu\"\n"
+                                       "VERSION=\"16.10 (Yakkety Yak)\"\n"
+                                       "ID=ubuntu\n"
+                                       "ID_LIKE=debian\n"
+                                       "PRETTY_NAME=\"Ubuntu 16.10\"\n"
+                                       "VERSION_ID=\"16.10\"\n"
+                                       "HOME_URL=\"http://www.ubuntu.com/\"\n"
+                                       "SUPPORT_URL=\"http://help.ubuntu.com/\"\n"
+                                       "BUG_REPORT_URL=\"http://bugs.launchpad.net/ubuntu/\"\n"
+                                       "PRIVACY_POLICY_URL=\"http://www.ubuntu.com/legal/terms-and-policies/privacy-policy\"\n"
+                                       "VERSION_CODENAME=yakkety\n"
+                                       "UBUNTU_CODENAME=yakkety\n"));
+
+  Distro UbuntuYakkety{UbuntuYakketyFileSystem};
+  ASSERT_EQ(Distro(Distro::UbuntuYakkety), UbuntuYakkety);
+  ASSERT_TRUE(UbuntuYakkety.IsUbuntu());
+  ASSERT_FALSE(UbuntuYakkety.IsRedhat());
+  ASSERT_FALSE(UbuntuYakkety.IsOpenSUSE());
+  ASSERT_FALSE(UbuntuYakkety.IsDebian());
+}
+
+TEST(DistroTest, DetectRedhat) {
+  vfs::InMemoryFileSystem Fedora25FileSystem;
+  Fedora25FileSystem.addFile("/etc/system-release-cpe", 0,
+      llvm::MemoryBuffer::getMemBuffer("cpe:/o:fedoraproject:fedora:25\n"));
+  // Both files are symlinks to fedora-release.
+  Fedora25FileSystem.addFile("/etc/system-release", 0,
+      llvm::MemoryBuffer::getMemBuffer("Fedora release 25 (Twenty Five)\n"));
+  Fedora25FileSystem.addFile("/etc/redhat-release", 0,
+      llvm::MemoryBuffer::getMemBuffer("Fedora release 25 (Twenty Five)\n"));
+  Fedora25FileSystem.addFile("/etc/fedora-release", 0,
+      llvm::MemoryBuffer::getMemBuffer("Fedora release 25 (Twenty Five)\n"));
+  Fedora25FileSystem.addFile("/etc/os-release", 0,
+      llvm::MemoryBuffer::getMemBuffer("NAME=Fedora\n"
+                                       "VERSION=\"25 (Twenty Five)\"\n"
+                                       "ID=fedora\n"
+                                       "VERSION_ID=25\n"
+                                       "PRETTY_NAME=\"Fedora 25 (Twenty Five)\"\n"
+                                       "ANSI_COLOR=\"0;34\"\n"
+                                       "CPE_NAME=\"cpe:/o:fedoraproject:fedora:25\"\n"
+                                       "HOME_URL=\"https://fedoraproject.org/\"\n"
+                                       "BUG_REPORT_URL=\"https://bugzilla.redhat.com/\"\n"
+                                       "REDHAT_BUGZILLA_PRODUCT=\"Fedora\"\n"
+                                       "REDHAT_BUGZILLA_PRODUCT_VERSION=25\n"
+                                       "REDHAT_SUPPORT_PRODUCT=\"Fedora\"\n"
+                                       "REDHAT_SUPPORT_PRODUCT_VERSION=25\n"
+                                       "PRIVACY_POLICY_URL=https://fedoraproject.org/wiki/Legal:PrivacyPolicy\n"));
+  Distro Fedora25{Fedora25FileSystem};
+  ASSERT_EQ(Distro(Distro::Fedora), Fedora25);
+  ASSERT_FALSE(Fedora25.IsUbuntu());
+  ASSERT_TRUE(Fedora25.IsRedhat());
+  ASSERT_FALSE(Fedora25.IsOpenSUSE());
+  ASSERT_FALSE(Fedora25.IsDebian());
+
+  vfs::InMemoryFileSystem CentOS7FileSystem;
+  CentOS7FileSystem.addFile("/etc/system-release-cpe", 0,
+      llvm::MemoryBuffer::getMemBuffer("cpe:/o:centos:centos:7\n"));
+  // Both files are symlinks to centos-release.
+  CentOS7FileSystem.addFile("/etc/system-release", 0,
+      llvm::MemoryBuffer::getMemBuffer("CentOS Linux release 7.2.1511 (Core) \n"));
+  CentOS7FileSystem.addFile("/etc/redhat-release", 0,
+      llvm::MemoryBuffer::getMemBuffer("CentOS Linux release 7.2.1511 (Core) \n"));
+  CentOS7FileSystem.addFile("/etc/centos-release", 0,
+      llvm::MemoryBuffer::getMemBuffer("CentOS Linux release 7.2.1511 (Core) \n"));
+  CentOS7FileSystem.addFile("/etc/centos-release-upstream", 0,
+      llvm::MemoryBuffer::getMemBuffer("Derived from Red Hat Enterprise Linux 7.2 (Source)\n"));
+  CentOS7FileSystem.addFile("/etc/os-release", 0,
+      llvm::MemoryBuffer::getMemBuffer("NAME=\"CentOS Linux\"\n"
+                                       "VERSION=\"7 (Core)\"\n"
+                                       "ID=\"centos\"\n"
+                                       "ID_LIKE=\"rhel fedora\"\n"
+                                       "VERSION_ID=\"7\"\n"
+                                       "PRETTY_NAME=\"CentOS Linux 7 (Core)\"\n"
+                                       "ANSI_COLOR=\"0;31\"\n"
+                                       "CPE_NAME=\"cpe:/o:centos:centos:7\"\n"
+                                       "HOME_URL=\"https://www.centos.org/\"\n"
+                                       "BUG_REPORT_URL=\"https://bugs.centos.org/\"\n"
+                                       "\n"
+                                       "CENTOS_MANTISBT_PROJECT=\"CentOS-7\"\n"
+                                       "CENTOS_MANTISBT_PROJECT_VERSION=\"7\"\n"
+                                       "REDHAT_SUPPORT_PRODUCT=\"centos\"\n"
+                                       "REDHAT_SUPPORT_PRODUCT_VERSION=\"7\"\n"));
+
+  Distro CentOS7{CentOS7FileSystem};
+  ASSERT_EQ(Distro(Distro::RHEL7), CentOS7);
+  ASSERT_FALSE(CentOS7.IsUbuntu());
+  ASSERT_TRUE(CentOS7.IsRedhat());
+  ASSERT_FALSE(CentOS7.IsOpenSUSE());
+  ASSERT_FALSE(CentOS7.IsDebian());
+}
+
+TEST(DistroTest, DetectOpenSUSE) {
+  vfs::InMemoryFileSystem OpenSUSELeap421FileSystem;
+  OpenSUSELeap421FileSystem.addFile("/etc/SuSE-release", 0,
+      llvm::MemoryBuffer::getMemBuffer("openSUSE 42.1 (x86_64)\n"
+                                       "VERSION = 42.1\n"
+                                       "CODENAME = Malachite\n"
+                                       "# /etc/SuSE-release is deprecated and will be removed in the future, use /etc/os-release instead\n"));
+  OpenSUSELeap421FileSystem.addFile("/etc/os-release", 0,
+      llvm::MemoryBuffer::getMemBuffer("NAME=\"openSUSE Leap\"\n"
+                                       "VERSION=\"42.1\"\n"
+                                       "VERSION_ID=\"42.1\"\n"
+                                       "PRETTY_NAME=\"openSUSE Leap 42.1 (x86_64)\"\n"
+                                       "ID=opensuse\n"
+                                       "ANSI_COLOR=\"0;32\"\n"
+                                       "CPE_NAME=\"cpe:/o:opensuse:opensuse:42.1\"\n"
+                                       "BUG_REPORT_URL=\"https://bugs.opensuse.org\"\n"
+                                       "HOME_URL=\"https://opensuse.org/\"\n"
+                                       "ID_LIKE=\"suse\"\n"));
+
+  Distro OpenSUSELeap421{OpenSUSELeap421FileSystem};
+  ASSERT_EQ(Distro(Distro::OpenSUSE), OpenSUSELeap421);
+  ASSERT_FALSE(OpenSUSELeap421.IsUbuntu());
+  ASSERT_FALSE(OpenSUSELeap421.IsRedhat());
+  ASSERT_TRUE(OpenSUSELeap421.IsOpenSUSE());
+  ASSERT_FALSE(OpenSUSELeap421.IsDebian());
+
+  vfs::InMemoryFileSystem OpenSUSE132FileSystem;
+  OpenSUSE132FileSystem.addFile("/etc/SuSE-release", 0,
+      llvm::MemoryBuffer::getMemBuffer("openSUSE 13.2 (x86_64)\n"
+                                       "VERSION = 13.2\n"
+                                       "CODENAME = Harlequin\n"
+                                       "# /etc/SuSE-release is deprecated and will be removed in the future, use /etc/os-release instead\n"));
+  OpenSUSE132FileSystem.addFile("/etc/os-release", 0,
+      llvm::MemoryBuffer::getMemBuffer("NAME=openSUSE\n"
+                                       "VERSION=\"13.2 (Harlequin)\"\n"
+                                       "VERSION_ID=\"13.2\"\n"
+                                       "PRETTY_NAME=\"openSUSE 13.2 (Harlequin) (x86_64)\"\n"
+                                       "ID=opensuse\n"
+                                       "ANSI_COLOR=\"0;32\"\n"
+                                       "CPE_NAME=\"cpe:/o:opensuse:opensuse:13.2\"\n"
+                                       "BUG_REPORT_URL=\"https://bugs.opensuse.org\"\n"
+                                       "HOME_URL=\"https://opensuse.org/\"\n"
+                                       "ID_LIKE=\"suse\"\n"));
+
+  Distro OpenSUSE132{OpenSUSE132FileSystem};
+  ASSERT_EQ(Distro(Distro::OpenSUSE), OpenSUSE132);
+  ASSERT_FALSE(OpenSUSE132.IsUbuntu());
+  ASSERT_FALSE(OpenSUSE132.IsRedhat());
+  ASSERT_TRUE(OpenSUSE132.IsOpenSUSE());
+  ASSERT_FALSE(OpenSUSE132.IsDebian());
+
+  vfs::InMemoryFileSystem SLES10FileSystem;
+  SLES10FileSystem.addFile("/etc/SuSE-release", 0,
+      llvm::MemoryBuffer::getMemBuffer("SUSE Linux Enterprise Server 10 (x86_64)\n"
+                                       "VERSION = 10\n"
+                                       "PATCHLEVEL = 4\n"));
+  SLES10FileSystem.addFile("/etc/lsb_release", 0,
+      llvm::MemoryBuffer::getMemBuffer("LSB_VERSION=\"core-2.0-noarch:core-3.0-noarch:core-2.0-x86_64:core-3.0-x86_64\"\n"));
+
+  // SLES10 is unsupported and therefore evaluates to unknown
+  Distro SLES10{SLES10FileSystem};
+  ASSERT_EQ(Distro(Distro::UnknownDistro), SLES10);
+  ASSERT_FALSE(SLES10.IsUbuntu());
+  ASSERT_FALSE(SLES10.IsRedhat());
+  ASSERT_FALSE(SLES10.IsOpenSUSE());
+  ASSERT_FALSE(SLES10.IsDebian());
+}
+
+TEST(DistroTest, DetectDebian) {
+  vfs::InMemoryFileSystem DebianJessieFileSystem;
+  DebianJessieFileSystem.addFile("/etc/debian_version", 0,
+                                 llvm::MemoryBuffer::getMemBuffer("8.6\n"));
+  DebianJessieFileSystem.addFile("/etc/os-release", 0,
+      llvm::MemoryBuffer::getMemBuffer("PRETTY_NAME=\"Debian GNU/Linux 8 (jessie)\"\n"
+                                       "NAME=\"Debian GNU/Linux\"\n"
+                                       "VERSION_ID=\"8\"\n"
+                                       "VERSION=\"8 (jessie)\"\n"
+                                       "ID=debian\n"
+                                       "HOME_URL=\"http://www.debian.org/\"\n"
+                                       "SUPPORT_URL=\"http://www.debian.org/support\"\n"
+                                       "BUG_REPORT_URL=\"https://bugs.debian.org/\"\n"));
+
+  Distro DebianJessie{DebianJessieFileSystem};
+  ASSERT_EQ(Distro(Distro::DebianJessie), DebianJessie);
+  ASSERT_FALSE(DebianJessie.IsUbuntu());
+  ASSERT_FALSE(DebianJessie.IsRedhat());
+  ASSERT_FALSE(DebianJessie.IsOpenSUSE());
+  ASSERT_TRUE(DebianJessie.IsDebian());
+
+  vfs::InMemoryFileSystem DebianStretchSidFileSystem;
+  DebianStretchSidFileSystem.addFile("/etc/debian_version", 0,
+                                 llvm::MemoryBuffer::getMemBuffer("stretch/sid\n"));
+  DebianStretchSidFileSystem.addFile("/etc/os-release", 0,
+      llvm::MemoryBuffer::getMemBuffer("PRETTY_NAME=\"Debian GNU/Linux stretch/sid\"\n"
+                                       "NAME=\"Debian GNU/Linux\"\n"
+                                       "ID=debian\n"
+                                       "HOME_URL=\"http://www.debian.org/\"\n"
+                                       "SUPPORT_URL=\"http://www.debian.org/support\"\n"
+                                       "BUG_REPORT_URL=\"https://bugs.debian.org/\"\n"));
+
+  Distro DebianStretchSid{DebianStretchSidFileSystem};
+  ASSERT_EQ(Distro(Distro::DebianStretch), DebianStretchSid);
+  ASSERT_FALSE(DebianStretchSid.IsUbuntu());
+  ASSERT_FALSE(DebianStretchSid.IsRedhat());
+  ASSERT_FALSE(DebianStretchSid.IsOpenSUSE());
+  ASSERT_TRUE(DebianStretchSid.IsDebian());
+}
+
+TEST(DistroTest, DetectExherbo) {
+  vfs::InMemoryFileSystem ExherboFileSystem;
+  ExherboFileSystem.addFile("/etc/exherbo-release", 0, // (ASCII art)
+                                 llvm::MemoryBuffer::getMemBuffer(""));
+  ExherboFileSystem.addFile("/etc/os-release", 0,
+      llvm::MemoryBuffer::getMemBuffer("NAME=\"Exherbo\"\n"
+                                       "PRETTY_NAME=\"Exherbo Linux\"\n"
+                                       "ID=\"exherbo\"\n"
+                                       "ANSI_COLOR=\"0;32\"\n"
+                                       "HOME_URL=\"https://www.exherbo.org/\"\n"
+                                       "SUPPORT_URL=\"irc://irc.freenode.net/#exherbo\"\n"
+                                       "BUG_REPORT_URL=\"https://bugs.exherbo.org/\"\n"));
+
+  Distro Exherbo{ExherboFileSystem};
+  ASSERT_EQ(Distro(Distro::Exherbo), Exherbo);
+  ASSERT_FALSE(Exherbo.IsUbuntu());
+  ASSERT_FALSE(Exherbo.IsRedhat());
+  ASSERT_FALSE(Exherbo.IsOpenSUSE());
+  ASSERT_FALSE(Exherbo.IsDebian());
+}
+
+TEST(DistroTest, DetectArchLinux) {
+  vfs::InMemoryFileSystem ArchLinuxFileSystem;
+  ArchLinuxFileSystem.addFile("/etc/arch-release", 0, // (empty)
+                                 llvm::MemoryBuffer::getMemBuffer(""));
+  ArchLinuxFileSystem.addFile("/etc/os-release", 0,
+      llvm::MemoryBuffer::getMemBuffer("NAME=\"Arch Linux\"\n"
+                                       "ID=arch\n"
+                                       "PRETTY_NAME=\"Arch Linux\"\n"
+                                       "ANSI_COLOR=\"0;36\"\n"
+                                       "HOME_URL=\"https://www.archlinux.org/\"\n"
+                                       "SUPPORT_URL=\"https://bbs.archlinux.org/\"\n"
+                                       "BUG_REPORT_URL=\"https://bugs.archlinux.org/\"\n"));
+
+  Distro ArchLinux{ArchLinuxFileSystem};
+  ASSERT_EQ(Distro(Distro::ArchLinux), ArchLinux);
+  ASSERT_FALSE(ArchLinux.IsUbuntu());
+  ASSERT_FALSE(ArchLinux.IsRedhat());
+  ASSERT_FALSE(ArchLinux.IsOpenSUSE());
+  ASSERT_FALSE(ArchLinux.IsDebian());
+}
+
+} // end anonymous namespace

external/llvm-project/clang/unittests/Driver/MultilibTest.cpp

@@ -0,0 +1,352 @@
+//===- unittests/Driver/MultilibTest.cpp --- Multilib tests ---------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// Unit tests for Multilib and MultilibSet
+//
+//===----------------------------------------------------------------------===//
+
+#include "clang/Driver/Multilib.h"
+#include "clang/Basic/LLVM.h"
+#include "llvm/ADT/StringRef.h"
+#include "llvm/ADT/StringSwitch.h"
+#include "gtest/gtest.h"
+
+using namespace clang::driver;
+using namespace clang;
+
+TEST(MultilibTest, MultilibValidity) {
+
+  ASSERT_TRUE(Multilib().isValid()) << "Empty multilib is not valid";
+
+  ASSERT_TRUE(Multilib().flag("+foo").isValid())
+      << "Single indicative flag is not valid";
+
+  ASSERT_TRUE(Multilib().flag("-foo").isValid())
+      << "Single contraindicative flag is not valid";
+
+  ASSERT_FALSE(Multilib().flag("+foo").flag("-foo").isValid())
+      << "Conflicting flags should invalidate the Multilib";
+
+  ASSERT_TRUE(Multilib().flag("+foo").flag("+foo").isValid())
+      << "Multilib should be valid even if it has the same flag twice";
+
+  ASSERT_TRUE(Multilib().flag("+foo").flag("-foobar").isValid())
+      << "Seemingly conflicting prefixes shouldn't actually conflict";
+}
+
+TEST(MultilibTest, OpEqReflexivity1) {
+  Multilib M;
+  ASSERT_TRUE(M == M) << "Multilib::operator==() is not reflexive";
+}
+
+TEST(MultilibTest, OpEqReflexivity2) {
+  ASSERT_TRUE(Multilib() == Multilib())
+      << "Separately constructed default multilibs are not equal";
+}
+
+TEST(MultilibTest, OpEqReflexivity3) {
+  Multilib M1, M2;
+  M1.flag("+foo");
+  M2.flag("+foo");
+  ASSERT_TRUE(M1 == M2) << "Multilibs with the same flag should be the same";
+}
+
+TEST(MultilibTest, OpEqInequivalence1) {
+  Multilib M1, M2;
+  M1.flag("+foo");
+  M2.flag("-foo");
+  ASSERT_FALSE(M1 == M2) << "Multilibs with conflicting flags are not the same";
+  ASSERT_FALSE(M2 == M1)
+      << "Multilibs with conflicting flags are not the same (commuted)";
+}
+
+TEST(MultilibTest, OpEqInequivalence2) {
+  Multilib M1, M2;
+  M2.flag("+foo");
+  ASSERT_FALSE(M1 == M2) << "Flags make Multilibs different";
+}
+
+TEST(MultilibTest, OpEqEquivalence1) {
+  Multilib M1, M2;
+  M1.flag("+foo");
+  M2.flag("+foo").flag("+foo");
+  ASSERT_TRUE(M1 == M2) << "Flag duplication shouldn't affect equivalence";
+  ASSERT_TRUE(M2 == M1)
+      << "Flag duplication shouldn't affect equivalence (commuted)";
+}
+
+TEST(MultilibTest, OpEqEquivalence2) {
+  Multilib M1("64");
+  Multilib M2;
+  M2.gccSuffix("/64");
+  ASSERT_TRUE(M1 == M2)
+      << "Constructor argument must match Multilib::gccSuffix()";
+  ASSERT_TRUE(M2 == M1)
+      << "Constructor argument must match Multilib::gccSuffix() (commuted)";
+}
+
+TEST(MultilibTest, OpEqEquivalence3) {
+  Multilib M1("", "32");
+  Multilib M2;
+  M2.osSuffix("/32");
+  ASSERT_TRUE(M1 == M2)
+      << "Constructor argument must match Multilib::osSuffix()";
+  ASSERT_TRUE(M2 == M1)
+      << "Constructor argument must match Multilib::osSuffix() (commuted)";
+}
+
+TEST(MultilibTest, OpEqEquivalence4) {
+  Multilib M1("", "", "16");
+  Multilib M2;
+  M2.includeSuffix("/16");
+  ASSERT_TRUE(M1 == M2)
+      << "Constructor argument must match Multilib::includeSuffix()";
+  ASSERT_TRUE(M2 == M1)
+      << "Constructor argument must match Multilib::includeSuffix() (commuted)";
+}
+
+TEST(MultilibTest, OpEqInequivalence3) {
+  Multilib M1("foo");
+  Multilib M2("bar");
+  ASSERT_FALSE(M1 == M2) << "Differing gccSuffixes should be different";
+  ASSERT_FALSE(M2 == M1)
+      << "Differing gccSuffixes should be different (commuted)";
+}
+
+TEST(MultilibTest, OpEqInequivalence4) {
+  Multilib M1("", "foo");
+  Multilib M2("", "bar");
+  ASSERT_FALSE(M1 == M2) << "Differing osSuffixes should be different";
+  ASSERT_FALSE(M2 == M1)
+      << "Differing osSuffixes should be different (commuted)";
+}
+
+TEST(MultilibTest, OpEqInequivalence5) {
+  Multilib M1("", "", "foo");
+  Multilib M2("", "", "bar");
+  ASSERT_FALSE(M1 == M2) << "Differing includeSuffixes should be different";
+  ASSERT_FALSE(M2 == M1)
+      << "Differing includeSuffixes should be different (commuted)";
+}
+
+TEST(MultilibTest, Construction1) {
+  Multilib M("gcc64", "os64", "inc64");
+  ASSERT_TRUE(M.gccSuffix() == "/gcc64");
+  ASSERT_TRUE(M.osSuffix() == "/os64");
+  ASSERT_TRUE(M.includeSuffix() == "/inc64");
+}
+
+TEST(MultilibTest, Construction2) {
+  Multilib M1;
+  Multilib M2("");
+  Multilib M3("", "");
+  Multilib M4("", "", "");
+  ASSERT_TRUE(M1 == M2)
+      << "Default arguments to Multilib constructor broken (first argument)";
+  ASSERT_TRUE(M1 == M3)
+      << "Default arguments to Multilib constructor broken (second argument)";
+  ASSERT_TRUE(M1 == M4)
+      << "Default arguments to Multilib constructor broken (third argument)";
+}
+
+TEST(MultilibTest, Construction3) {
+  Multilib M = Multilib().flag("+f1").flag("+f2").flag("-f3");
+  for (Multilib::flags_list::const_iterator I = M.flags().begin(),
+                                            E = M.flags().end();
+       I != E; ++I) {
+    ASSERT_TRUE(llvm::StringSwitch<bool>(*I)
+                    .Cases("+f1", "+f2", "-f3", true)
+                    .Default(false));
+  }
+}
+
+static bool hasFlag(const Multilib &M, StringRef Flag) {
+  for (Multilib::flags_list::const_iterator I = M.flags().begin(),
+                                            E = M.flags().end();
+       I != E; ++I) {
+    if (*I == Flag)
+      return true;
+    else if (StringRef(*I).substr(1) == Flag.substr(1))
+      return false;
+  }
+  return false;
+}
+
+TEST(MultilibTest, SetConstruction1) {
+  // Single maybe
+  MultilibSet MS;
+  ASSERT_TRUE(MS.size() == 0);
+  MS.Maybe(Multilib("64").flag("+m64"));
+  ASSERT_TRUE(MS.size() == 2);
+  for (MultilibSet::const_iterator I = MS.begin(), E = MS.end(); I != E; ++I) {
+    if (I->gccSuffix() == "/64")
+      ASSERT_TRUE(I->flags()[0] == "+m64");
+    else if (I->gccSuffix() == "")
+      ASSERT_TRUE(I->flags()[0] == "-m64");
+    else
+      FAIL() << "Unrecognized gccSufix: " << I->gccSuffix();
+  }
+}
+
+TEST(MultilibTest, SetConstruction2) {
+  // Double maybe
+  MultilibSet MS;
+  MS.Maybe(Multilib("sof").flag("+sof"));
+  MS.Maybe(Multilib("el").flag("+EL"));
+  ASSERT_TRUE(MS.size() == 4);
+  for (MultilibSet::const_iterator I = MS.begin(), E = MS.end(); I != E; ++I) {
+    ASSERT_TRUE(I->isValid()) << "Multilb " << *I << " should be valid";
+    ASSERT_TRUE(llvm::StringSwitch<bool>(I->gccSuffix())
+                    .Cases("", "/sof", "/el", "/sof/el", true)
+                    .Default(false))
+        << "Multilib " << *I << " wasn't expected";
+    ASSERT_TRUE(llvm::StringSwitch<bool>(I->gccSuffix())
+                    .Case("", hasFlag(*I, "-sof"))
+                    .Case("/sof", hasFlag(*I, "+sof"))
+                    .Case("/el", hasFlag(*I, "-sof"))
+                    .Case("/sof/el", hasFlag(*I, "+sof"))
+                    .Default(false))
+        << "Multilib " << *I << " didn't have the appropriate {+,-}sof flag";
+    ASSERT_TRUE(llvm::StringSwitch<bool>(I->gccSuffix())
+                    .Case("", hasFlag(*I, "-EL"))
+                    .Case("/sof", hasFlag(*I, "-EL"))
+                    .Case("/el", hasFlag(*I, "+EL"))
+                    .Case("/sof/el", hasFlag(*I, "+EL"))
+                    .Default(false))
+        << "Multilib " << *I << " didn't have the appropriate {+,-}EL flag";
+  }
+}
+
+TEST(MultilibTest, SetPushback) {
+  MultilibSet MS;
+  MS.push_back(Multilib("one"));
+  MS.push_back(Multilib("two"));
+  ASSERT_TRUE(MS.size() == 2);
+  for (MultilibSet::const_iterator I = MS.begin(), E = MS.end(); I != E; ++I) {
+    ASSERT_TRUE(llvm::StringSwitch<bool>(I->gccSuffix())
+                    .Cases("/one", "/two", true)
+                    .Default(false));
+  }
+  MS.clear();
+  ASSERT_TRUE(MS.size() == 0);
+}
+
+TEST(MultilibTest, SetRegexFilter) {
+  MultilibSet MS;
+  MS.Maybe(Multilib("one"));
+  MS.Maybe(Multilib("two"));
+  MS.Maybe(Multilib("three"));
+  ASSERT_EQ(MS.size(), (unsigned)2 * 2 * 2)
+      << "Size before filter was incorrect. Contents:\n" << MS;
+  MS.FilterOut("/one/two/three");
+  ASSERT_EQ(MS.size(), (unsigned)2 * 2 * 2 - 1)
+      << "Size after filter was incorrect. Contents:\n" << MS;
+  for (MultilibSet::const_iterator I = MS.begin(), E = MS.end(); I != E; ++I) {
+    ASSERT_TRUE(I->gccSuffix() != "/one/two/three")
+        << "The filter should have removed " << *I;
+  }
+}
+
+TEST(MultilibTest, SetFilterObject) {
+  MultilibSet MS;
+  MS.Maybe(Multilib("orange"));
+  MS.Maybe(Multilib("pear"));
+  MS.Maybe(Multilib("plum"));
+  ASSERT_EQ((int)MS.size(), 1 /* Default */ +
+                            1 /* pear */ +
+                            1 /* plum */ +
+                            1 /* pear/plum */ +
+                            1 /* orange */ +
+                            1 /* orange/pear */ +
+                            1 /* orange/plum */ +
+                            1 /* orange/pear/plum */ )
+      << "Size before filter was incorrect. Contents:\n" << MS;
+  MS.FilterOut([](const Multilib &M) {
+    return StringRef(M.gccSuffix()).startswith("/p");
+  });
+  ASSERT_EQ((int)MS.size(), 1 /* Default */ +
+                            1 /* orange */ +
+                            1 /* orange/pear */ +
+                            1 /* orange/plum */ + 
+                            1 /* orange/pear/plum */ )
+      << "Size after filter was incorrect. Contents:\n" << MS;
+  for (MultilibSet::const_iterator I = MS.begin(), E = MS.end(); I != E; ++I) {
+    ASSERT_FALSE(StringRef(I->gccSuffix()).startswith("/p"))
+        << "The filter should have removed " << *I;
+  }
+}
+
+TEST(MultilibTest, SetSelection1) {
+  MultilibSet MS1 = MultilibSet()
+    .Maybe(Multilib("64").flag("+m64"));
+
+  Multilib::flags_list FlagM64;
+  FlagM64.push_back("+m64");
+  Multilib SelectionM64;
+  ASSERT_TRUE(MS1.select(FlagM64, SelectionM64))
+      << "Flag set was {\"+m64\"}, but selection not found";
+  ASSERT_TRUE(SelectionM64.gccSuffix() == "/64")
+      << "Selection picked " << SelectionM64 << " which was not expected";
+
+  Multilib::flags_list FlagNoM64;
+  FlagNoM64.push_back("-m64");
+  Multilib SelectionNoM64;
+  ASSERT_TRUE(MS1.select(FlagNoM64, SelectionNoM64))
+      << "Flag set was {\"-m64\"}, but selection not found";
+  ASSERT_TRUE(SelectionNoM64.gccSuffix() == "")
+      << "Selection picked " << SelectionNoM64 << " which was not expected";
+}
+
+TEST(MultilibTest, SetSelection2) {
+  MultilibSet MS2 = MultilibSet()
+    .Maybe(Multilib("el").flag("+EL"))
+    .Maybe(Multilib("sf").flag("+SF"));
+
+  for (unsigned I = 0; I < 4; ++I) {
+    bool IsEL = I & 0x1;
+    bool IsSF = I & 0x2;
+    Multilib::flags_list Flags;
+    if (IsEL)
+      Flags.push_back("+EL");
+    else
+      Flags.push_back("-EL");
+
+    if (IsSF)
+      Flags.push_back("+SF");
+    else
+      Flags.push_back("-SF");
+
+    Multilib Selection;
+    ASSERT_TRUE(MS2.select(Flags, Selection)) << "Selection failed for "
+                                              << (IsEL ? "+EL" : "-EL") << " "
+                                              << (IsSF ? "+SF" : "-SF");
+
+    std::string Suffix;
+    if (IsEL)
+      Suffix += "/el";
+    if (IsSF)
+      Suffix += "/sf";
+
+    ASSERT_EQ(Selection.gccSuffix(), Suffix) << "Selection picked " << Selection
+                                             << " which was not expected ";
+  }
+}
+
+TEST(MultilibTest, SetCombineWith) {
+  MultilibSet Coffee;
+  Coffee.push_back(Multilib("coffee"));
+  MultilibSet Milk;
+  Milk.push_back(Multilib("milk"));
+  MultilibSet Latte;
+  ASSERT_EQ(Latte.size(), (unsigned)0);
+  Latte.combineWith(Coffee);
+  ASSERT_EQ(Latte.size(), (unsigned)1);
+  Latte.combineWith(Milk);
+  ASSERT_EQ(Latte.size(), (unsigned)2);
+}

external/llvm-project/clang/unittests/Driver/ToolChainTest.cpp

@@ -0,0 +1,263 @@
+//===- unittests/Driver/ToolChainTest.cpp --- ToolChain tests -------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// Unit tests for ToolChains.
+//
+//===----------------------------------------------------------------------===//
+
+#include "clang/Driver/ToolChain.h"
+#include "clang/Basic/DiagnosticIDs.h"
+#include "clang/Basic/DiagnosticOptions.h"
+#include "clang/Basic/LLVM.h"
+#include "clang/Basic/VirtualFileSystem.h"
+#include "clang/Driver/Compilation.h"
+#include "clang/Driver/Driver.h"
+#include "llvm/Support/TargetRegistry.h"
+#include "llvm/Support/TargetSelect.h"
+#include "llvm/Support/raw_ostream.h"
+#include "gtest/gtest.h"
+using namespace clang;
+using namespace clang::driver;
+
+namespace {
+
+TEST(ToolChainTest, VFSGCCInstallation) {
+  IntrusiveRefCntPtr<DiagnosticOptions> DiagOpts = new DiagnosticOptions();
+
+  IntrusiveRefCntPtr<DiagnosticIDs> DiagID(new DiagnosticIDs());
+  struct TestDiagnosticConsumer : public DiagnosticConsumer {};
+  DiagnosticsEngine Diags(DiagID, &*DiagOpts, new TestDiagnosticConsumer);
+  IntrusiveRefCntPtr<vfs::InMemoryFileSystem> InMemoryFileSystem(
+      new vfs::InMemoryFileSystem);
+  Driver TheDriver("/bin/clang", "arm-linux-gnueabihf", Diags,
+                   InMemoryFileSystem);
+
+  const char *EmptyFiles[] = {
+      "foo.cpp",
+      "/bin/clang",
+      "/usr/lib/gcc/arm-linux-gnueabi/4.6.1/crtbegin.o",
+      "/usr/lib/gcc/arm-linux-gnueabi/4.6.1/crtend.o",
+      "/usr/lib/gcc/arm-linux-gnueabihf/4.6.3/crtbegin.o",
+      "/usr/lib/gcc/arm-linux-gnueabihf/4.6.3/crtend.o",
+      "/usr/lib/arm-linux-gnueabi/crt1.o",
+      "/usr/lib/arm-linux-gnueabi/crti.o",
+      "/usr/lib/arm-linux-gnueabi/crtn.o",
+      "/usr/lib/arm-linux-gnueabihf/crt1.o",
+      "/usr/lib/arm-linux-gnueabihf/crti.o",
+      "/usr/lib/arm-linux-gnueabihf/crtn.o",
+      "/usr/include/arm-linux-gnueabi/.keep",
+      "/usr/include/arm-linux-gnueabihf/.keep",
+      "/lib/arm-linux-gnueabi/.keep",
+      "/lib/arm-linux-gnueabihf/.keep"};
+
+  for (const char *Path : EmptyFiles)
+    InMemoryFileSystem->addFile(Path, 0,
+                                llvm::MemoryBuffer::getMemBuffer("\n"));
+
+  std::unique_ptr<Compilation> C(TheDriver.BuildCompilation(
+      {"-fsyntax-only", "--gcc-toolchain=", "foo.cpp"}));
+  EXPECT_TRUE(C);
+
+  std::string S;
+  {
+    llvm::raw_string_ostream OS(S);
+    C->getDefaultToolChain().printVerboseInfo(OS);
+  }
+#if LLVM_ON_WIN32
+  std::replace(S.begin(), S.end(), '\\', '/');
+#endif
+  EXPECT_EQ(
+      "Found candidate GCC installation: "
+      "/usr/lib/gcc/arm-linux-gnueabihf/4.6.3\n"
+      "Selected GCC installation: /usr/lib/gcc/arm-linux-gnueabihf/4.6.3\n"
+      "Candidate multilib: .;@m32\n"
+      "Selected multilib: .;@m32\n",
+      S);
+}
+
+TEST(ToolChainTest, VFSGCCInstallationRelativeDir) {
+  IntrusiveRefCntPtr<DiagnosticOptions> DiagOpts = new DiagnosticOptions();
+
+  IntrusiveRefCntPtr<DiagnosticIDs> DiagID(new DiagnosticIDs());
+  struct TestDiagnosticConsumer : public DiagnosticConsumer {};
+  DiagnosticsEngine Diags(DiagID, &*DiagOpts, new TestDiagnosticConsumer);
+  IntrusiveRefCntPtr<vfs::InMemoryFileSystem> InMemoryFileSystem(
+      new vfs::InMemoryFileSystem);
+  Driver TheDriver("/home/test/bin/clang", "arm-linux-gnueabi", Diags,
+                   InMemoryFileSystem);
+
+  const char *EmptyFiles[] = {
+      "foo.cpp", "/home/test/lib/gcc/arm-linux-gnueabi/4.6.1/crtbegin.o",
+      "/home/test/include/arm-linux-gnueabi/.keep"};
+
+  for (const char *Path : EmptyFiles)
+    InMemoryFileSystem->addFile(Path, 0,
+                                llvm::MemoryBuffer::getMemBuffer("\n"));
+
+  std::unique_ptr<Compilation> C(TheDriver.BuildCompilation(
+      {"-fsyntax-only", "--gcc-toolchain=", "foo.cpp"}));
+  EXPECT_TRUE(C);
+
+  std::string S;
+  {
+    llvm::raw_string_ostream OS(S);
+    C->getDefaultToolChain().printVerboseInfo(OS);
+  }
+#if LLVM_ON_WIN32
+  std::replace(S.begin(), S.end(), '\\', '/');
+#endif
+  EXPECT_EQ("Found candidate GCC installation: "
+            "/home/test/lib/gcc/arm-linux-gnueabi/4.6.1\n"
+            "Selected GCC installation: "
+            "/home/test/bin/../lib/gcc/arm-linux-gnueabi/4.6.1\n"
+            "Candidate multilib: .;@m32\n"
+            "Selected multilib: .;@m32\n",
+            S);
+}
+
+TEST(ToolChainTest, DefaultDriverMode) {
+  IntrusiveRefCntPtr<DiagnosticOptions> DiagOpts = new DiagnosticOptions();
+
+  IntrusiveRefCntPtr<DiagnosticIDs> DiagID(new DiagnosticIDs());
+  struct TestDiagnosticConsumer : public DiagnosticConsumer {};
+  DiagnosticsEngine Diags(DiagID, &*DiagOpts, new TestDiagnosticConsumer);
+  IntrusiveRefCntPtr<vfs::InMemoryFileSystem> InMemoryFileSystem(
+      new vfs::InMemoryFileSystem);
+
+  Driver CCDriver("/home/test/bin/clang", "arm-linux-gnueabi", Diags,
+                  InMemoryFileSystem);
+  CCDriver.setCheckInputsExist(false);
+  Driver CXXDriver("/home/test/bin/clang++", "arm-linux-gnueabi", Diags,
+                   InMemoryFileSystem);
+  CXXDriver.setCheckInputsExist(false);
+  Driver CLDriver("/home/test/bin/clang-cl", "arm-linux-gnueabi", Diags,
+                  InMemoryFileSystem);
+  CLDriver.setCheckInputsExist(false);
+
+  std::unique_ptr<Compilation> CC(CCDriver.BuildCompilation(
+      { "/home/test/bin/clang", "foo.cpp"}));
+  std::unique_ptr<Compilation> CXX(CXXDriver.BuildCompilation(
+      { "/home/test/bin/clang++", "foo.cpp"}));
+  std::unique_ptr<Compilation> CL(CLDriver.BuildCompilation(
+      { "/home/test/bin/clang-cl", "foo.cpp"}));
+
+  EXPECT_TRUE(CC);
+  EXPECT_TRUE(CXX);
+  EXPECT_TRUE(CL);
+  EXPECT_TRUE(CCDriver.CCCIsCC());
+  EXPECT_TRUE(CXXDriver.CCCIsCXX());
+  EXPECT_TRUE(CLDriver.IsCLMode());
+}
+TEST(ToolChainTest, InvalidArgument) {
+  IntrusiveRefCntPtr<DiagnosticIDs> DiagID(new DiagnosticIDs());
+  struct TestDiagnosticConsumer : public DiagnosticConsumer {};
+  IntrusiveRefCntPtr<DiagnosticOptions> DiagOpts = new DiagnosticOptions();
+  DiagnosticsEngine Diags(DiagID, &*DiagOpts, new TestDiagnosticConsumer);
+  Driver TheDriver("/bin/clang", "arm-linux-gnueabihf", Diags);
+  std::unique_ptr<Compilation> C(TheDriver.BuildCompilation(
+      {"-fsyntax-only", "-fan-unknown-option", "foo.cpp"}));
+  EXPECT_TRUE(C);
+  EXPECT_TRUE(C->containsError());
+}
+
+TEST(ToolChainTest, ParsedClangName) {
+  ParsedClangName Empty;
+  EXPECT_TRUE(Empty.TargetPrefix.empty());
+  EXPECT_TRUE(Empty.ModeSuffix.empty());
+  EXPECT_TRUE(Empty.DriverMode == nullptr);
+  EXPECT_FALSE(Empty.TargetIsValid);
+
+  ParsedClangName DriverOnly("clang", nullptr);
+  EXPECT_TRUE(DriverOnly.TargetPrefix.empty());
+  EXPECT_TRUE(DriverOnly.ModeSuffix == "clang");
+  EXPECT_TRUE(DriverOnly.DriverMode == nullptr);
+  EXPECT_FALSE(DriverOnly.TargetIsValid);
+
+  ParsedClangName DriverOnly2("clang++", "--driver-mode=g++");
+  EXPECT_TRUE(DriverOnly2.TargetPrefix.empty());
+  EXPECT_TRUE(DriverOnly2.ModeSuffix == "clang++");
+  EXPECT_STREQ(DriverOnly2.DriverMode, "--driver-mode=g++");
+  EXPECT_FALSE(DriverOnly2.TargetIsValid);
+
+  ParsedClangName TargetAndMode("i386", "clang-g++", "--driver-mode=g++", true);
+  EXPECT_TRUE(TargetAndMode.TargetPrefix == "i386");
+  EXPECT_TRUE(TargetAndMode.ModeSuffix == "clang-g++");
+  EXPECT_STREQ(TargetAndMode.DriverMode, "--driver-mode=g++");
+  EXPECT_TRUE(TargetAndMode.TargetIsValid);
+}
+
+TEST(ToolChainTest, GetTargetAndMode) {
+  llvm::InitializeAllTargets();
+  std::string IgnoredError;
+  if (!llvm::TargetRegistry::lookupTarget("x86_64", IgnoredError))
+    return;
+
+  ParsedClangName Res = ToolChain::getTargetAndModeFromProgramName("clang");
+  EXPECT_TRUE(Res.TargetPrefix.empty());
+  EXPECT_TRUE(Res.ModeSuffix == "clang");
+  EXPECT_TRUE(Res.DriverMode == nullptr);
+  EXPECT_FALSE(Res.TargetIsValid);
+
+  Res = ToolChain::getTargetAndModeFromProgramName("clang++");
+  EXPECT_TRUE(Res.TargetPrefix.empty());
+  EXPECT_TRUE(Res.ModeSuffix == "clang++");
+  EXPECT_STREQ(Res.DriverMode, "--driver-mode=g++");
+  EXPECT_FALSE(Res.TargetIsValid);
+
+  Res = ToolChain::getTargetAndModeFromProgramName("clang++6.0");
+  EXPECT_TRUE(Res.TargetPrefix.empty());
+  EXPECT_TRUE(Res.ModeSuffix == "clang++");
+  EXPECT_STREQ(Res.DriverMode, "--driver-mode=g++");
+  EXPECT_FALSE(Res.TargetIsValid);
+
+  Res = ToolChain::getTargetAndModeFromProgramName("clang++-release");
+  EXPECT_TRUE(Res.TargetPrefix.empty());
+  EXPECT_TRUE(Res.ModeSuffix == "clang++");
+  EXPECT_STREQ(Res.DriverMode, "--driver-mode=g++");
+  EXPECT_FALSE(Res.TargetIsValid);
+
+  Res = ToolChain::getTargetAndModeFromProgramName("x86_64-clang++");
+  EXPECT_TRUE(Res.TargetPrefix == "x86_64");
+  EXPECT_TRUE(Res.ModeSuffix == "clang++");
+  EXPECT_STREQ(Res.DriverMode, "--driver-mode=g++");
+  EXPECT_TRUE(Res.TargetIsValid);
+
+  Res = ToolChain::getTargetAndModeFromProgramName(
+      "x86_64-linux-gnu-clang-c++");
+  EXPECT_TRUE(Res.TargetPrefix == "x86_64-linux-gnu");
+  EXPECT_TRUE(Res.ModeSuffix == "clang-c++");
+  EXPECT_STREQ(Res.DriverMode, "--driver-mode=g++");
+  EXPECT_TRUE(Res.TargetIsValid);
+
+  Res = ToolChain::getTargetAndModeFromProgramName(
+      "x86_64-linux-gnu-clang-c++-tot");
+  EXPECT_TRUE(Res.TargetPrefix == "x86_64-linux-gnu");
+  EXPECT_TRUE(Res.ModeSuffix == "clang-c++");
+  EXPECT_STREQ(Res.DriverMode, "--driver-mode=g++");
+  EXPECT_TRUE(Res.TargetIsValid);
+
+  Res = ToolChain::getTargetAndModeFromProgramName("qqq");
+  EXPECT_TRUE(Res.TargetPrefix.empty());
+  EXPECT_TRUE(Res.ModeSuffix.empty());
+  EXPECT_TRUE(Res.DriverMode == nullptr);
+  EXPECT_FALSE(Res.TargetIsValid);
+
+  Res = ToolChain::getTargetAndModeFromProgramName("x86_64-qqq");
+  EXPECT_TRUE(Res.TargetPrefix.empty());
+  EXPECT_TRUE(Res.ModeSuffix.empty());
+  EXPECT_TRUE(Res.DriverMode == nullptr);
+  EXPECT_FALSE(Res.TargetIsValid);
+
+  Res = ToolChain::getTargetAndModeFromProgramName("qqq-clang-cl");
+  EXPECT_TRUE(Res.TargetPrefix == "qqq");
+  EXPECT_TRUE(Res.ModeSuffix == "clang-cl");
+  EXPECT_STREQ(Res.DriverMode, "--driver-mode=cl");
+  EXPECT_FALSE(Res.TargetIsValid);
+}
+} // end anonymous namespace.