Import a whole bunch of clang trunk commits to enable self-hosting clang

3.4 on Sparc64 (commit descriptions left out for brevity):

r198311 r198312 r198911 r198912 r198918 r198923 r199012 r199034 r199037
r199188 r199399 r200452

Submitted by:	rdivacky

4 files changed, 79 insertions, 6 deletions

diff --git a/contrib/llvm/tools/clang/lib/Basic/Targets.cpp b/contrib/llvm/tools/clang/lib/Basic/Targets.cpp
index bccd0d7..70b7ac5 100644
--- a/contrib/llvm/tools/clang/lib/Basic/Targets.cpp
+++ b/contrib/llvm/tools/clang/lib/Basic/Targets.cpp
@@ -4529,6 +4529,13 @@ public:
       UIntMaxType = UnsignedLong;
     }
     Int64Type = IntMaxType;
+
+    // The SPARCv8 System V ABI has long double 128-bits in size, but 64-bit
+    // aligned. The SPARCv9 SCD 2.4.1 says 16-byte aligned.
+    LongDoubleWidth = 128;
+    LongDoubleAlign = 128;
+    LongDoubleFormat = &llvm::APFloat::IEEEquad;
+    MaxAtomicPromoteWidth = MaxAtomicInlineWidth = 64;
   }
 
   virtual void getTargetDefines(const LangOptions &Opts,
diff --git a/contrib/llvm/tools/clang/lib/CodeGen/TargetInfo.cpp b/contrib/llvm/tools/clang/lib/CodeGen/TargetInfo.cpp
index 76acf87..578cea6 100644
--- a/contrib/llvm/tools/clang/lib/CodeGen/TargetInfo.cpp
+++ b/contrib/llvm/tools/clang/lib/CodeGen/TargetInfo.cpp
@@ -5349,6 +5349,11 @@ SparcV9ABIInfo::classifyType(QualType Ty, unsigned SizeLimit) const {
   if (!isAggregateTypeForABI(Ty))
     return ABIArgInfo::getDirect();
 
+  // If a C++ object has either a non-trivial copy constructor or a non-trivial
+  // destructor, it is passed with an explicit indirect pointer / sret pointer.
+  if (CGCXXABI::RecordArgABI RAA = getRecordArgABI(Ty, getCXXABI()))
+    return ABIArgInfo::getIndirect(0, RAA == CGCXXABI::RAA_DirectInMemory);
+
   // This is a small aggregate type that should be passed in registers.
   // Build a coercion type from the LLVM struct type.
   llvm::StructType *StrTy = dyn_cast<llvm::StructType>(CGT.ConvertType(Ty));
diff --git a/contrib/llvm/tools/clang/lib/Driver/ToolChains.cpp b/contrib/llvm/tools/clang/lib/Driver/ToolChains.cpp
index 8a47e76..f5dc3dfb 100644
--- a/contrib/llvm/tools/clang/lib/Driver/ToolChains.cpp
+++ b/contrib/llvm/tools/clang/lib/Driver/ToolChains.cpp
@@ -1164,6 +1164,13 @@ void Generic_GCC::GCCInstallationDetector::print(raw_ostream &OS) const {
                                                 "powerpc64le-suse-linux",
                                                 "ppc64le-redhat-linux" };
 
+  static const char *const SPARCv8LibDirs[] = { "/lib32", "/lib" };
+  static const char *const SPARCv8Triples[] = { "sparc-linux-gnu",
+                                                "sparcv8-linux-gnu" };
+  static const char *const SPARCv9LibDirs[] = { "/lib64", "/lib" };
+  static const char *const SPARCv9Triples[] = { "sparc64-linux-gnu",
+                                                "sparcv9-linux-gnu" };
+
   static const char *const SystemZLibDirs[] = { "/lib64", "/lib" };
   static const char *const SystemZTriples[] = {
     "s390x-linux-gnu", "s390x-unknown-linux-gnu", "s390x-ibm-linux-gnu",
@@ -1283,6 +1290,26 @@ void Generic_GCC::GCCInstallationDetector::print(raw_ostream &OS) const {
     TripleAliases.append(PPC64LETriples,
                          PPC64LETriples + llvm::array_lengthof(PPC64LETriples));
     break;
+  case llvm::Triple::sparc:
+    LibDirs.append(SPARCv8LibDirs,
+                   SPARCv8LibDirs + llvm::array_lengthof(SPARCv8LibDirs));
+    TripleAliases.append(SPARCv8Triples,
+                         SPARCv8Triples + llvm::array_lengthof(SPARCv8Triples));
+    BiarchLibDirs.append(SPARCv9LibDirs,
+                         SPARCv9LibDirs + llvm::array_lengthof(SPARCv9LibDirs));
+    BiarchTripleAliases.append(
+        SPARCv9Triples, SPARCv9Triples + llvm::array_lengthof(SPARCv9Triples));
+    break;
+  case llvm::Triple::sparcv9:
+    LibDirs.append(SPARCv9LibDirs,
+                   SPARCv9LibDirs + llvm::array_lengthof(SPARCv9LibDirs));
+    TripleAliases.append(SPARCv9Triples,
+                         SPARCv9Triples + llvm::array_lengthof(SPARCv9Triples));
+    BiarchLibDirs.append(SPARCv8LibDirs,
+                         SPARCv8LibDirs + llvm::array_lengthof(SPARCv8LibDirs));
+    BiarchTripleAliases.append(
+        SPARCv8Triples, SPARCv8Triples + llvm::array_lengthof(SPARCv8Triples));
+    break;
   case llvm::Triple::systemz:
     LibDirs.append(SystemZLibDirs,
                    SystemZLibDirs + llvm::array_lengthof(SystemZLibDirs));
@@ -1379,6 +1406,7 @@ static bool findTargetBiarchSuffix(std::string &Suffix, StringRef Path,
     Suffix = "/n32";
   else if (TargetArch == llvm::Triple::x86_64 ||
            TargetArch == llvm::Triple::ppc64 ||
+           TargetArch == llvm::Triple::sparcv9 ||
            TargetArch == llvm::Triple::systemz ||
            TargetArch == llvm::Triple::mips64 ||
            TargetArch == llvm::Triple::mips64el)
diff --git a/contrib/llvm/tools/clang/lib/Driver/Tools.cpp b/contrib/llvm/tools/clang/lib/Driver/Tools.cpp
index 3529fc7..fe62a03 100644
--- a/contrib/llvm/tools/clang/lib/Driver/Tools.cpp
+++ b/contrib/llvm/tools/clang/lib/Driver/Tools.cpp
@@ -5785,6 +5785,19 @@ void freebsd::Assemble::ConstructJob(Compilation &C, const JobAction &JA,
     default:
       CmdArgs.push_back("-matpcs");
     }
+  } else if (getToolChain().getArch() == llvm::Triple::sparc ||
+             getToolChain().getArch() == llvm::Triple::sparcv9) {
+    Arg *LastPICArg = Args.getLastArg(options::OPT_fPIC, options::OPT_fno_PIC,
+                                      options::OPT_fpic, options::OPT_fno_pic,
+                                      options::OPT_fPIE, options::OPT_fno_PIE,
+                                      options::OPT_fpie, options::OPT_fno_pie);
+    if (LastPICArg &&
+        (LastPICArg->getOption().matches(options::OPT_fPIC) ||
+         LastPICArg->getOption().matches(options::OPT_fpic) ||
+         LastPICArg->getOption().matches(options::OPT_fPIE) ||
+         LastPICArg->getOption().matches(options::OPT_fpie))) {
+      CmdArgs.push_back("-KPIC");
+    }
   }
 
   Args.AddAllArgValues(CmdArgs, options::OPT_Wa_COMMA,
@@ -6194,6 +6207,7 @@ void gnutools::Assemble::ConstructJob(Compilation &C, const JobAction &JA,
                                       const ArgList &Args,
                                       const char *LinkingOutput) const {
   ArgStringList CmdArgs;
+  bool NeedsKPIC = false;
 
   // Add --32/--64 to make sure we get the format we want.
   // This is incomplete
@@ -6213,6 +6227,14 @@ void gnutools::Assemble::ConstructJob(Compilation &C, const JobAction &JA,
     CmdArgs.push_back("-a64");
     CmdArgs.push_back("-mppc64le");
     CmdArgs.push_back("-many");
+  } else if (getToolChain().getArch() == llvm::Triple::sparc) {
+    CmdArgs.push_back("-32");
+    CmdArgs.push_back("-Av8plusa");
+    NeedsKPIC = true;
+  } else if (getToolChain().getArch() == llvm::Triple::sparcv9) {
+    CmdArgs.push_back("-64");
+    CmdArgs.push_back("-Av9a");
+    NeedsKPIC = true;
   } else if (getToolChain().getArch() == llvm::Triple::arm) {
     StringRef MArch = getToolChain().getArchName();
     if (MArch == "armv7" || MArch == "armv7a" || MArch == "armv7-a")
@@ -6272,6 +6294,15 @@ void gnutools::Assemble::ConstructJob(Compilation &C, const JobAction &JA,
         CmdArgs.push_back(Args.MakeArgString("-mmsa"));
     }
 
+    NeedsKPIC = true;
+  } else if (getToolChain().getArch() == llvm::Triple::systemz) {
+    // Always pass an -march option, since our default of z10 is later
+    // than the GNU assembler's default.
+    StringRef CPUName = getSystemZTargetCPU(Args);
+    CmdArgs.push_back(Args.MakeArgString("-march=" + CPUName));
+  }
+
+  if (NeedsKPIC) {
     Arg *LastPICArg = Args.getLastArg(options::OPT_fPIC, options::OPT_fno_PIC,
                                       options::OPT_fpic, options::OPT_fno_pic,
                                       options::OPT_fPIE, options::OPT_fno_PIE,
@@ -6283,11 +6314,6 @@ void gnutools::Assemble::ConstructJob(Compilation &C, const JobAction &JA,
          LastPICArg->getOption().matches(options::OPT_fpie))) {
       CmdArgs.push_back("-KPIC");
     }
-  } else if (getToolChain().getArch() == llvm::Triple::systemz) {
-    // Always pass an -march option, since our default of z10 is later
-    // than the GNU assembler's default.
-    StringRef CPUName = getSystemZTargetCPU(Args);
-    CmdArgs.push_back(Args.MakeArgString("-march=" + CPUName));
   }
 
   Args.AddAllArgValues(CmdArgs, options::OPT_Wa_COMMA,
@@ -6357,7 +6383,8 @@ static StringRef getLinuxDynamicLinker(const ArgList &Args,
                                        const toolchains::Linux &ToolChain) {
   if (ToolChain.getTriple().getEnvironment() == llvm::Triple::Android)
     return "/system/bin/linker";
-  else if (ToolChain.getArch() == llvm::Triple::x86)
+  else if (ToolChain.getArch() == llvm::Triple::x86 ||
+           ToolChain.getArch() == llvm::Triple::sparc)
     return "/lib/ld-linux.so.2";
   else if (ToolChain.getArch() == llvm::Triple::aarch64)
     return "/lib/ld-linux-aarch64.so.1";
@@ -6382,6 +6409,8 @@ static StringRef getLinuxDynamicLinker(const ArgList &Args,
            ToolChain.getArch() == llvm::Triple::ppc64le ||
            ToolChain.getArch() == llvm::Triple::systemz)
     return "/lib64/ld64.so.1";
+  else if (ToolChain.getArch() == llvm::Triple::sparcv9)
+    return "/lib64/ld-linux.so.2";
   else
     return "/lib64/ld-linux-x86-64.so.2";
 }
@@ -6444,6 +6473,10 @@ void gnutools::Link::ConstructJob(Compilation &C, const JobAction &JA,
     CmdArgs.push_back("elf32ppclinux");
   else if (ToolChain.getArch() == llvm::Triple::ppc64)
     CmdArgs.push_back("elf64ppc");
+  else if (ToolChain.getArch() == llvm::Triple::sparc)
+    CmdArgs.push_back("elf32_sparc");
+  else if (ToolChain.getArch() == llvm::Triple::sparcv9)
+    CmdArgs.push_back("elf64_sparc");
   else if (ToolChain.getArch() == llvm::Triple::mips)
     CmdArgs.push_back("elf32btsmip");
   else if (ToolChain.getArch() == llvm::Triple::mipsel)