Bug#730808: LLVM support for Debian MIPS64EL port support

[YunQiang Su]

Package: llvm-toolchain-3.3
Version: 1:3.3-13

With the attached patch, llvm-toolchain-3.3 can be built successfully
on mips64el port.
The clang also can build hello world out, and works well.
I didn't test others.

It still has a problem that, it complaint that:
root at clash:/tmp# clang hello.c
   /usr/bin/ld: /tmp/hello-QJEgiE.o: warning: linking abicalls files
with non-abicalls files
-- 
YunQiang Su
-------------- next part --------------
Index: llvm-toolchain-3.3-3.3/clang/lib/Driver/ToolChains.cpp
===================================================================
--- llvm-toolchain-3.3-3.3.orig/clang/lib/Driver/ToolChains.cpp	2013-11-21 18:38:32.860732069 +0800
+++ llvm-toolchain-3.3-3.3/clang/lib/Driver/ToolChains.cpp	2013-11-21 18:49:15.656277394 +0800
@@ -1133,9 +1133,15 @@
   };
 
   static const char *const MIPS64LibDirs[] = { "/lib64", "/lib" };
-  static const char *const MIPS64Triples[] = { "mips64-linux-gnu" };
+  static const char *const MIPS64Triples[] = {
+    "mips64-linux-gnu",
+    "mips64-linux-gnuabi64"
+  };
   static const char *const MIPS64ELLibDirs[] = { "/lib64", "/lib" };
-  static const char *const MIPS64ELTriples[] = { "mips64el-linux-gnu" };
+  static const char *const MIPS64ELTriples[] = {
+    "mips64el-linux-gnu",
+    "mips64el-linux-gnuabi64"
+  };
 
   static const char *const PPCLibDirs[] = { "/lib32", "/lib" };
   static const char *const PPCTriples[] = {
@@ -1296,9 +1302,9 @@
 }
 
 static bool isMipsArch(llvm::Triple::ArchType Arch) {
-  return Arch == llvm::Triple::mips ||
-         Arch == llvm::Triple::mipsel ||
-         Arch == llvm::Triple::mips64 ||
+  return Arch == llvm::Triple::mips      ||
+         Arch == llvm::Triple::mipsel    ||
+         Arch == llvm::Triple::mips64    ||
          Arch == llvm::Triple::mips64el;
 }
 
@@ -2168,6 +2174,14 @@
     if (llvm::sys::fs::exists(SysRoot + "/lib/mipsel-linux-gnu"))
       return "mipsel-linux-gnu";
     return TargetTriple.str();
+  case llvm::Triple::mips64:
+    if (llvm::sys::fs::exists(SysRoot + "/lib/mips64-linux-gnuabi64"))
+      return "mips64-linux-gnuabi64";
+    return TargetTriple.str();
+  case llvm::Triple::mips64el:
+    if (llvm::sys::fs::exists(SysRoot + "/lib/mips64el-linux-gnuabi64"))
+      return "mips64el-linux-gnuabi64";
+    return TargetTriple.str();
   case llvm::Triple::ppc:
     if (llvm::sys::fs::exists(SysRoot + "/lib/powerpc-linux-gnuspe"))
       return "powerpc-linux-gnuspe";
@@ -2486,6 +2500,12 @@
   const StringRef MIPSELMultiarchIncludeDirs[] = {
     "/usr/include/mipsel-linux-gnu"
   };
+  const StringRef MIPS64MultiarchIncludeDirs[] = {
+    "/usr/include/mips64-linux-gnuabi64"
+  };
+  const StringRef MIPS64ELMultiarchIncludeDirs[] = {
+    "/usr/include/mips64el-linux-gnuabi64"
+  };
   const StringRef PPCMultiarchIncludeDirs[] = {
     "/usr/include/powerpc-linux-gnu"
   };
@@ -2508,6 +2528,10 @@
     MultiarchIncludeDirs = MIPSMultiarchIncludeDirs;
   } else if (getTriple().getArch() == llvm::Triple::mipsel) {
     MultiarchIncludeDirs = MIPSELMultiarchIncludeDirs;
+  } else if (getTriple().getArch() == llvm::Triple::mips64) {
+    MultiarchIncludeDirs = MIPS64MultiarchIncludeDirs;
+  } else if (getTriple().getArch() == llvm::Triple::mips64el) {
+    MultiarchIncludeDirs = MIPS64ELMultiarchIncludeDirs;
   } else if (getTriple().getArch() == llvm::Triple::ppc) {
     MultiarchIncludeDirs = PPCMultiarchIncludeDirs;
   } else if (getTriple().getArch() == llvm::Triple::ppc64) {