Add MSP430 toolchain

src/llvm/tools/clang/include/clang/Basic/DiagnosticDriverKinds.td

@@ -402,4 +402,15 @@ def warn_drv_experimental_isel_incomplete_opt : Warning<
 def warn_drv_moutline_unsupported_opt : Warning<
   "The '%0' architecture does not support -moutline; flag ignored">,
   InGroup<OptionIgnored>;
+
+def warn_drv_msp430_hwmult_unsupported : Warning<"the given MCU does not "
+  "support hardware multiply, but -mhwmult is set to %0.">,
+   InGroup<InvalidCommandLineArgument>;
+def warn_drv_msp430_hwmult_mismatch : Warning<"the given MCU supports %0 "
+  "hardware multiply, but -mhwmult is set to %1.">,
+   InGroup<InvalidCommandLineArgument>;
+def warn_drv_msp430_hwmult_no_device : Warning<"no MCU device specified, but "
+  "'-mhwmult' is set to 'auto', assuming no hardware multiply. Use -mmcu to "
+  "specify a MSP430 device, or -mhwmult to set hardware multiply type "
+  "explicitly.">, InGroup<InvalidCommandLineArgument>;
 }

src/llvm/tools/clang/include/clang/Basic/MSP430Target.def

@@ -0,0 +1,247 @@
+//===--- MSP430Target.def - MSP430 Feature/Processor Database----*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file defines the MSP430 devices and their features.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef MSP430_MCU_FEAT
+#define MSP430_MCU_FEAT(NAME, HWMULT) MSP430_MCU(NAME)
+#endif
+
+#ifndef MSP430_MCU
+#define MSP430_MCU(NAME)
+#endif
+
+MSP430_MCU("msp430c111")
+MSP430_MCU("msp430c1111")
+MSP430_MCU("msp430c112")
+MSP430_MCU("msp430c1121")
+MSP430_MCU("msp430c1331")
+MSP430_MCU("msp430c1351")
+MSP430_MCU("msp430e112")
+MSP430_MCU("msp430f110")
+MSP430_MCU("msp430f1101")
+MSP430_MCU("msp430f1101a")
+MSP430_MCU("msp430f1111")
+MSP430_MCU("msp430f1111a")
+MSP430_MCU("msp430f112")
+MSP430_MCU("msp430f1121")
+MSP430_MCU("msp430f1121a")
+MSP430_MCU("msp430f1122")
+MSP430_MCU("msp430f1132")
+MSP430_MCU("msp430f122")
+MSP430_MCU("msp430f1222")
+MSP430_MCU("msp430f123")
+MSP430_MCU("msp430f1232")
+MSP430_MCU("msp430f133")
+MSP430_MCU("msp430f135")
+MSP430_MCU("msp430f155")
+MSP430_MCU("msp430f156")
+MSP430_MCU("msp430f157")
+MSP430_MCU("msp430p112")
+MSP430_MCU("msp430f2001")
+MSP430_MCU("msp430f2011")
+MSP430_MCU("msp430f2002")
+MSP430_MCU("msp430f2012")
+MSP430_MCU("msp430f2003")
+MSP430_MCU("msp430f2013")
+MSP430_MCU("msp430f2101")
+MSP430_MCU("msp430f2111")
+MSP430_MCU("msp430f2121")
+MSP430_MCU("msp430f2131")
+MSP430_MCU("msp430f2112")
+MSP430_MCU("msp430f2122")
+MSP430_MCU("msp430f2132")
+MSP430_MCU("msp430f2232")
+MSP430_MCU("msp430f2252")
+MSP430_MCU("msp430f2272")
+MSP430_MCU("msp430f2234")
+MSP430_MCU("msp430f2254")
+MSP430_MCU("msp430f2274")
+MSP430_MCU("msp430g2211")
+MSP430_MCU("msp430g2201")
+MSP430_MCU("msp430g2111")
+MSP430_MCU("msp430g2101")
+MSP430_MCU("msp430g2001")
+MSP430_MCU("msp430g2231")
+MSP430_MCU("msp430g2221")
+MSP430_MCU("msp430g2131")
+MSP430_MCU("msp430g2121")
+MSP430_MCU("msp430g2102")
+MSP430_MCU("msp430g2202")
+MSP430_MCU("msp430g2302")
+MSP430_MCU("msp430g2402")
+MSP430_MCU("msp430g2132")
+MSP430_MCU("msp430g2232")
+MSP430_MCU("msp430g2332")
+MSP430_MCU("msp430g2432")
+MSP430_MCU("msp430g2112")
+MSP430_MCU("msp430g2212")
+MSP430_MCU("msp430g2312")
+MSP430_MCU("msp430g2412")
+MSP430_MCU("msp430g2152")
+MSP430_MCU("msp430g2252")
+MSP430_MCU("msp430g2352")
+MSP430_MCU("msp430g2452")
+MSP430_MCU("msp430g2113")
+MSP430_MCU("msp430g2213")
+MSP430_MCU("msp430g2313")
+MSP430_MCU("msp430g2413")
+MSP430_MCU("msp430g2513")
+MSP430_MCU("msp430g2153")
+MSP430_MCU("msp430g2253")
+MSP430_MCU("msp430g2353")
+MSP430_MCU("msp430g2453")
+MSP430_MCU("msp430g2553")
+MSP430_MCU("msp430g2203")
+MSP430_MCU("msp430g2303")
+MSP430_MCU("msp430g2403")
+MSP430_MCU("msp430g2233")
+MSP430_MCU("msp430g2333")
+MSP430_MCU("msp430g2433")
+MSP430_MCU("msp430g2533")
+MSP430_MCU("msp430tch5e")
+MSP430_MCU("msp430g2444")
+MSP430_MCU("msp430g2544")
+MSP430_MCU("msp430g2744")
+MSP430_MCU("msp430g2755")
+MSP430_MCU("msp430g2855")
+MSP430_MCU("msp430g2955")
+MSP430_MCU("msp430g2230")
+MSP430_MCU("msp430g2210")
+MSP430_MCU("msp430c311s")
+MSP430_MCU("msp430c312")
+MSP430_MCU("msp430c313")
+MSP430_MCU("msp430c314")
+MSP430_MCU("msp430c315")
+MSP430_MCU("msp430c323")
+MSP430_MCU("msp430c325")
+MSP430_MCU("msp430c412")
+MSP430_MCU("msp430c413")
+MSP430_MCU("msp430e313")
+MSP430_MCU("msp430e315")
+MSP430_MCU("msp430e325")
+MSP430_MCU("msp430p313")
+MSP430_MCU("msp430p315")
+MSP430_MCU("msp430p315s")
+MSP430_MCU("msp430p325")
+MSP430_MCU("msp430f412")
+MSP430_MCU("msp430f413")
+MSP430_MCU("msp430f415")
+MSP430_MCU("msp430f417")
+MSP430_MCU("msp430f4132")
+MSP430_MCU("msp430f4152")
+MSP430_MCU("msp430f435")
+MSP430_MCU("msp430f436")
+MSP430_MCU("msp430f437")
+MSP430_MCU("msp430f4351")
+MSP430_MCU("msp430f4361")
+MSP430_MCU("msp430f4371")
+MSP430_MCU("msp430fe423")
+MSP430_MCU("msp430fe425")
+MSP430_MCU("msp430fe427")
+MSP430_MCU("msp430fe423a")
+MSP430_MCU("msp430fe425a")
+MSP430_MCU("msp430fe427a")
+MSP430_MCU("msp430fe4232")
+MSP430_MCU("msp430fe4242")
+MSP430_MCU("msp430fe4252")
+MSP430_MCU("msp430fe4272")
+MSP430_MCU("msp430f4250")
+MSP430_MCU("msp430f4260")
+MSP430_MCU("msp430f4270")
+MSP430_MCU("msp430fg4250")
+MSP430_MCU("msp430fg4260")
+MSP430_MCU("msp430fg4270")
+MSP430_MCU("msp430fw423")
+MSP430_MCU("msp430fw425")
+MSP430_MCU("msp430fw427")
+MSP430_MCU("msp430fw428")
+MSP430_MCU("msp430fw429")
+MSP430_MCU("msp430fg437")
+MSP430_MCU("msp430fg438")
+MSP430_MCU("msp430fg439")
+MSP430_MCU("msp430f438")
+MSP430_MCU("msp430f439")
+MSP430_MCU("msp430f477")
+MSP430_MCU("msp430f478")
+MSP430_MCU("msp430f479")
+MSP430_MCU("msp430fg477")
+MSP430_MCU("msp430fg478")
+MSP430_MCU("msp430fg479")
+
+// With 16-bit hardware multiplier
+MSP430_MCU_FEAT("msp430f147", "16bit")
+MSP430_MCU_FEAT("msp430f148", "16bit")
+MSP430_MCU_FEAT("msp430f149", "16bit")
+MSP430_MCU_FEAT("msp430f1471", "16bit")
+MSP430_MCU_FEAT("msp430f1481", "16bit")
+MSP430_MCU_FEAT("msp430f1491", "16bit")
+MSP430_MCU_FEAT("msp430f167", "16bit")
+MSP430_MCU_FEAT("msp430f168", "16bit")
+MSP430_MCU_FEAT("msp430f169", "16bit")
+MSP430_MCU_FEAT("msp430f1610", "16bit")
+MSP430_MCU_FEAT("msp430f1611", "16bit")
+MSP430_MCU_FEAT("msp430f1612", "16bit")
+MSP430_MCU_FEAT("msp430c336", "16bit")
+MSP430_MCU_FEAT("msp430c337", "16bit")
+MSP430_MCU_FEAT("msp430e337", "16bit")
+MSP430_MCU_FEAT("msp430p337", "16bit")
+MSP430_MCU_FEAT("msp430f423", "16bit")
+MSP430_MCU_FEAT("msp430f425", "16bit")
+MSP430_MCU_FEAT("msp430f427", "16bit")
+MSP430_MCU_FEAT("msp430f423a", "16bit")
+MSP430_MCU_FEAT("msp430f425a", "16bit")
+MSP430_MCU_FEAT("msp430f427a", "16bit")
+MSP430_MCU_FEAT("msp430f4481", "16bit")
+MSP430_MCU_FEAT("msp430f4491", "16bit")
+MSP430_MCU_FEAT("msp430f447", "16bit")
+MSP430_MCU_FEAT("msp430f448", "16bit")
+MSP430_MCU_FEAT("msp430f449", "16bit")
+MSP430_MCU_FEAT("msp430f2330", "16bit")
+MSP430_MCU_FEAT("msp430f2350", "16bit")
+MSP430_MCU_FEAT("msp430f2370", "16bit")
+MSP430_MCU_FEAT("msp430f233", "16bit")
+MSP430_MCU_FEAT("msp430f235", "16bit")
+MSP430_MCU_FEAT("msp430f247", "16bit")
+MSP430_MCU_FEAT("msp430f248", "16bit")
+MSP430_MCU_FEAT("msp430f249", "16bit")
+MSP430_MCU_FEAT("msp430f2410", "16bit")
+MSP430_MCU_FEAT("msp430f2471", "16bit")
+MSP430_MCU_FEAT("msp430f2481", "16bit")
+MSP430_MCU_FEAT("msp430f2491", "16bit")
+MSP430_MCU_FEAT("msp430i2020", "16bit")
+MSP430_MCU_FEAT("msp430i2021", "16bit")
+MSP430_MCU_FEAT("msp430i2030", "16bit")
+MSP430_MCU_FEAT("msp430i2031", "16bit")
+MSP430_MCU_FEAT("msp430i2040", "16bit")
+MSP430_MCU_FEAT("msp430i2041", "16bit")
+MSP430_MCU_FEAT("msp430afe221", "16bit")
+MSP430_MCU_FEAT("msp430afe231", "16bit")
+MSP430_MCU_FEAT("msp430afe251", "16bit")
+MSP430_MCU_FEAT("msp430afe222", "16bit")
+MSP430_MCU_FEAT("msp430afe232", "16bit")
+MSP430_MCU_FEAT("msp430afe252", "16bit")
+MSP430_MCU_FEAT("msp430afe223", "16bit")
+MSP430_MCU_FEAT("msp430afe233", "16bit")
+MSP430_MCU_FEAT("msp430afe253", "16bit")
+
+// With 32 Bit Hardware Multiplier
+MSP430_MCU_FEAT("msp430f4783", "32bit")
+MSP430_MCU_FEAT("msp430f4793", "32bit")
+MSP430_MCU_FEAT("msp430f4784", "32bit")
+MSP430_MCU_FEAT("msp430f4794", "32bit")
+
+// Generic MSUs
+MSP430_MCU("msp430")
+MSP430_MCU("msp430i2xxgeneric")
+
+#undef MSP430_MCU
+#undef MSP430_MCU_FEAT

src/llvm/tools/clang/include/clang/Driver/Options.td

@@ -1990,6 +1990,7 @@ def mfloat_abi_EQ : Joined<["-"], "mfloat-abi=">, Group<m_Group>, Values<"soft,s
 def mfpmath_EQ : Joined<["-"], "mfpmath=">, Group<m_Group>;
 def mfpu_EQ : Joined<["-"], "mfpu=">, Group<m_Group>;
 def mhwdiv_EQ : Joined<["-"], "mhwdiv=">, Group<m_Group>;
+def mhwmult_EQ : Joined<["-"], "mhwmult=">, Group<m_Group>;
 def mglobal_merge : Flag<["-"], "mglobal-merge">, Group<m_Group>, Flags<[CC1Option]>,
   HelpText<"Enable merging of globals">;
 def mhard_float : Flag<["-"], "mhard-float">, Group<m_Group>;

src/llvm/tools/clang/include/clang/module.modulemap

@@ -49,6 +49,7 @@ module Clang_Basic {
   textual header "Basic/BuiltinsXCore.def"
   textual header "Basic/DiagnosticOptions.def"
   textual header "Basic/Features.def"
+  textual header "Basic/MSP430Target.def"
   textual header "Basic/LangOptions.def"
   textual header "Basic/OpenCLExtensions.def"
   textual header "Basic/OpenCLImageTypes.def"

src/llvm/tools/clang/lib/Driver/CMakeLists.txt

@@ -51,6 +51,7 @@ add_clang_library(clangDriver
   ToolChains/MipsLinux.cpp
   ToolChains/MinGW.cpp
   ToolChains/Minix.cpp
+  ToolChains/MSP430.cpp
   ToolChains/MSVC.cpp
   ToolChains/Myriad.cpp
   ToolChains/NaCl.cpp

src/llvm/tools/clang/lib/Driver/Driver.cpp

@@ -28,6 +28,7 @@
 #include "ToolChains/Hexagon.h"
 #include "ToolChains/Lanai.h"
 #include "ToolChains/Linux.h"
+#include "ToolChains/MSP430.h"
 #include "ToolChains/MSVC.h"
 #include "ToolChains/MinGW.h"
 #include "ToolChains/Minix.h"
@@ -4601,6 +4602,9 @@ const ToolChain &Driver::getToolChain(const ArgList &Args,
       case llvm::Triple::avr:
         TC = llvm::make_unique<toolchains::AVRToolChain>(*this, Target, Args);
         break;
+      case llvm::Triple::msp430:
+        TC = llvm::make_unique<toolchains::MSP430ToolChain>(*this, Target, Args);
+        break;
       case llvm::Triple::riscv32:
       case llvm::Triple::riscv64:
         TC = llvm::make_unique<toolchains::RISCVToolChain>(*this, Target, Args);

src/llvm/tools/clang/lib/Driver/ToolChains/Clang.cpp

@@ -20,6 +20,7 @@
 #include "CommonArgs.h"
 #include "Hexagon.h"
 #include "InputInfo.h"
+#include "MSP430.h"
 #include "PS4CPU.h"
 #include "clang/Basic/CharInfo.h"
 #include "clang/Basic/LangOptions.h"
@@ -363,6 +364,8 @@ static void getTargetFeatures(const ToolChain &TC, const llvm::Triple &Triple,
   case llvm::Triple::amdgcn:
     amdgpu::getAMDGPUTargetFeatures(D, Args, Features);
     break;
+  case llvm::Triple::msp430:
+    msp430::getMSP430TargetFeatures(D, Args, Features);
   }
 
   // Find the last of each feature.

src/llvm/tools/clang/lib/Driver/ToolChains/Gnu.cpp

@@ -878,6 +878,10 @@ static bool isRISCV(llvm::Triple::ArchType Arch) {
   return Arch == llvm::Triple::riscv32 || Arch == llvm::Triple::riscv64;
 }
 
+static bool isMSP430(llvm::Triple::ArchType Arch) {
+  return Arch == llvm::Triple::msp430;
+}
+
 static Multilib makeMultilib(StringRef commonSuffix) {
   return Multilib(commonSuffix, commonSuffix, commonSuffix);
 }
@@ -1423,6 +1427,26 @@ static void findAndroidArmMultilibs(const Driver &D,
     Result.Multilibs = AndroidArmMultilibs;
 }
 
+static bool findMSP430Multilibs(const Driver &D,
+                                const llvm::Triple &TargetTriple,
+                                StringRef Path, const ArgList &Args,
+                                DetectedMultilibs &Result) {
+  FilterNonExistent NonExistent(Path, "/crtbegin.o", D.getVFS());
+  Multilib MSP430Multilib = makeMultilib("/430");
+  // FIXME: when clang starts to support msp430x ISA additional logic
+  // to select between multilib must be implemented
+  // Multilib MSP430xMultilib = makeMultilib("/large");
+
+  Result.Multilibs.push_back(MSP430Multilib);
+  Result.Multilibs.FilterOut(NonExistent);
+
+  Multilib::flags_list Flags;
+  if (Result.Multilibs.select(Flags, Result.SelectedMultilib))
+    return true;
+
+  return false;
+}
+
 static void findRISCVMultilibs(const Driver &D,
                                const llvm::Triple &TargetTriple, StringRef Path,
                                const ArgList &Args, DetectedMultilibs &Result) {
@@ -1910,6 +1934,9 @@ void Generic_GCC::GCCInstallationDetector::AddDefaultGCCPrefixes(
   static const char *const MIPSN32ELTriples[] = {
       "mips64el-linux-gnuabin32", "mipsisa64r6el-linux-gnuabin32"};
 
+  static const char *const MSP430LibDirs[] = {"/lib"};
+  static const char *const MSP430Triples[] = {"msp430-elf"};
+
   static const char *const PPCLibDirs[] = {"/lib32", "/lib"};
   static const char *const PPCTriples[] = {
       "powerpc-linux-gnu", "powerpc-unknown-linux-gnu", "powerpc-linux-gnuspe",
@@ -2134,6 +2161,10 @@ void Generic_GCC::GCCInstallationDetector::AddDefaultGCCPrefixes(
     BiarchTripleAliases.append(begin(MIPSN32ELTriples), end(MIPSN32ELTriples));
     BiarchTripleAliases.append(begin(MIPSTriples), end(MIPSTriples));
     break;
+  case llvm::Triple::msp430:
+    LibDirs.append(begin(MSP430LibDirs), end(MSP430LibDirs));
+    TripleAliases.append(begin(MSP430Triples), end(MSP430Triples));
+    break;
   case llvm::Triple::ppc:
     LibDirs.append(begin(PPCLibDirs), end(PPCLibDirs));
     TripleAliases.append(begin(PPCTriples), end(PPCTriples));
@@ -2205,6 +2236,8 @@ bool Generic_GCC::GCCInstallationDetector::ScanGCCForMultilibs(
       return false;
   } else if (isRISCV(TargetArch)) {
     findRISCVMultilibs(D, TargetTriple, Path, Args, Detected);
+  } else if (isMSP430(TargetArch)) {
+    findMSP430Multilibs(D, TargetTriple, Path, Args, Detected);
   } else if (!findBiarchMultilibs(D, TargetTriple, Path, Args,
                                   NeedsBiarchSuffix, Detected)) {
     return false;
@@ -2468,6 +2501,7 @@ bool Generic_GCC::IsIntegratedAssemblerDefault() const {
   case llvm::Triple::systemz:
   case llvm::Triple::mips:
   case llvm::Triple::mipsel:
+  case llvm::Triple::msp430:
     return true;
   case llvm::Triple::mips64:
   case llvm::Triple::mips64el: