Index: include/llvm/Support/TargetParser.h
===================================================================
--- include/llvm/Support/TargetParser.h
+++ include/llvm/Support/TargetParser.h
@@ -122,22 +122,24 @@
 
   // Arch extension modifiers for CPUs.
   enum ArchExtKind {
-    AEK_INVALID = 0,
-    AEK_CRC,
-    AEK_CRYPTO,
-    AEK_FP,
-    AEK_HWDIV,
-    AEK_MP,
-    AEK_SIMD,
-    AEK_SEC,
-    AEK_VIRT,
+    AEK_INVALID  = 0x0,
+    AEK_NONE     = 0x1,
+    AEK_CRC      = 0x2,
+    AEK_CRYPTO   = 0x4,
+    AEK_FP       = 0x8,
+    AEK_HWDIV    = 0x10,
+    AEK_HWDIVARM = 0x20,
+    AEK_MP       = 0x40,
+    AEK_SIMD     = 0x80,
+    AEK_SEC      = 0x100,
+    AEK_VIRT     = 0x200,
     // Unsupported extensions.
-    AEK_OS,
-    AEK_IWMMXT,
-    AEK_IWMMXT2,
-    AEK_MAVERICK,
-    AEK_XSCALE,
-    AEK_LAST
+    AEK_OS       = 0x400,
+    AEK_IWMMXT   = 0x800,
+    AEK_IWMMXT2  = 0x1000,
+    AEK_MAVERICK = 0x2000,
+    AEK_XSCALE   = 0x4000,
+    AEK_LAST     = 0x8000
   };
 
   // ISA kinds.
@@ -167,6 +169,7 @@
 
 // Target Parsers, one per architecture.
 class ARMTargetParser {
+  static StringRef getHWDivSynonym(StringRef HWDiv);
   static StringRef getFPUSynonym(StringRef FPU);
   static StringRef getArchSynonym(StringRef Arch);
 
@@ -182,6 +185,8 @@
   // FIXME: This should be moved to TargetTuple once it exists
   static       bool   getFPUFeatures(unsigned FPUKind,
                                      std::vector<const char*> &Features);
+  static       bool   getHWDivFeatures(unsigned HWDivKind,
+                                       std::vector<const char*> &Features);
   static const char * getArchName(unsigned ArchKind);
   static   unsigned   getArchAttr(unsigned ArchKind);
   static const char * getCPUAttr(unsigned ArchKind);
@@ -190,6 +195,7 @@
   static const char * getDefaultCPU(StringRef Arch);
 
   // Parser
+  static unsigned parseHWDiv(StringRef HWDiv);
   static unsigned parseFPU(StringRef FPU);
   static unsigned parseArch(StringRef Arch);
   static unsigned parseArchExt(StringRef ArchExt);
Index: lib/Support/TargetParser.cpp
===================================================================
--- lib/Support/TargetParser.cpp
+++ lib/Support/TargetParser.cpp
@@ -115,20 +115,35 @@
   const char *Name;
   ARM::ArchExtKind ID;
 } ARCHExtNames[] = {
-  { "invalid",  ARM::AEK_INVALID },
-  { "crc",      ARM::AEK_CRC },
-  { "crypto",   ARM::AEK_CRYPTO },
-  { "fp",       ARM::AEK_FP },
-  { "idiv",     ARM::AEK_HWDIV },
-  { "mp",       ARM::AEK_MP },
-  { "simd",     ARM::AEK_SIMD },
-  { "sec",      ARM::AEK_SEC },
-  { "virt",     ARM::AEK_VIRT },
-  { "os",       ARM::AEK_OS },
-  { "iwmmxt",   ARM::AEK_IWMMXT },
-  { "iwmmxt2",  ARM::AEK_IWMMXT2 },
-  { "maverick", ARM::AEK_MAVERICK },
-  { "xscale",   ARM::AEK_XSCALE }
+  { "invalid",   ARM::AEK_INVALID },
+  { "none",      ARM::AEK_NONE },
+  { "crc",       ARM::AEK_CRC },
+  { "crypto",    ARM::AEK_CRYPTO },
+  { "fp",        ARM::AEK_FP },
+  { "hwdiv",     ARM::AEK_HWDIV },
+  { "hwdiv-arm", ARM::AEK_HWDIVARM },
+  { "mp",        ARM::AEK_MP },
+  { "simd",      ARM::AEK_SIMD },
+  { "sec",       ARM::AEK_SEC },
+  { "virt",      ARM::AEK_VIRT },
+  { "os",        ARM::AEK_OS },
+  { "iwmmxt",    ARM::AEK_IWMMXT },
+  { "iwmmxt2",   ARM::AEK_IWMMXT2 },
+  { "maverick",  ARM::AEK_MAVERICK },
+  { "xscale",    ARM::AEK_XSCALE }
+};
+// List of HWDiv names (use getHWDivSynonym) and which architectural
+// features they correspond to (use getHWDivFeatures).
+// FIXME: TableGen this.
+struct {
+  const char *Name;
+  unsigned ID;
+} HWDivNames[] = {
+  { "invalid",    ARM::AEK_INVALID },
+  { "none",       ARM::AEK_NONE },
+  { "thumb",      ARM::AEK_HWDIV },
+  { "arm",        ARM::AEK_HWDIVARM },
+  { "arm,thumb", (ARM::AEK_HWDIVARM | ARM::AEK_HWDIV) }
 };
 // List of CPU names and their arches.
 // The same CPU can have multiple arches and can be default on multiple arches.
@@ -266,6 +281,33 @@
   return ARM::FK_INVALID;
 }
 
+bool ARMTargetParser::getHWDivFeatures(unsigned HWDivKind,
+                                       std::vector<const char *> &Features) {
+
+  switch (HWDivKind) {
+  case ARM::AEK_NONE:
+    Features.push_back("-hwdiv-arm");
+    Features.push_back("-hwdiv");
+    break;
+  case ARM::AEK_HWDIV:
+    Features.push_back("-hwdiv-arm");
+    Features.push_back("+hwdiv");
+    break;
+  case ARM::AEK_HWDIVARM:
+    Features.push_back("+hwdiv-arm");
+    Features.push_back("-hwdiv");
+    break;
+  case (ARM::AEK_HWDIVARM | ARM::AEK_HWDIV):
+    Features.push_back("+hwdiv-arm");
+    Features.push_back("+hwdiv");
+    break;
+  default:
+    return false;
+  }
+
+  return true;
+}
+
 bool ARMTargetParser::getFPUFeatures(unsigned FPUKind,
                                      std::vector<const char *> &Features) {
 
@@ -394,6 +436,12 @@
 // Parsers
 // ======================================================= //
 
+StringRef ARMTargetParser::getHWDivSynonym(StringRef HWDiv) {
+  return StringSwitch<StringRef>(HWDiv)
+    .Case("thumb,arm", "arm,thumb")
+    .Default(HWDiv);
+}
+
 StringRef ARMTargetParser::getFPUSynonym(StringRef FPU) {
   return StringSwitch<StringRef>(FPU)
     .Cases("fpa", "fpe2", "fpe3", "maverick", "invalid") // Unsupported
@@ -477,6 +525,15 @@
   return A;
 }
 
+unsigned ARMTargetParser::parseHWDiv(StringRef HWDiv) {
+  StringRef Syn = getHWDivSynonym(HWDiv);
+  for (const auto D : HWDivNames) {
+    if (Syn == D.Name)
+      return D.ID;
+  }
+  return ARM::AEK_INVALID;
+}
+
 unsigned ARMTargetParser::parseFPU(StringRef FPU) {
   StringRef Syn = getFPUSynonym(FPU);
   for (const auto F : FPUNames) {