Index: include/clang/Driver/Options.td
===================================================================
--- include/clang/Driver/Options.td
+++ include/clang/Driver/Options.td
@@ -1359,6 +1359,12 @@
 def mips32r2 : Flag<["-"], "mips32r2">,
   Alias<march_EQ>, AliasArgs<["mips32r2"]>,
   HelpText<"Equivalent to -march=mips32r2">, Flags<[HelpHidden]>;
+def mips32r3 : Flag<["-"], "mips32r3">,
+  Alias<march_EQ>, AliasArgs<["mips32r3"]>,
+  HelpText<"Equivalent to -march=mips32r3">, Flags<[HelpHidden]>;
+def mips32r5 : Flag<["-"], "mips32r5">,
+  Alias<march_EQ>, AliasArgs<["mips32r5"]>,
+  HelpText<"Equivalent to -march=mips32r5">, Flags<[HelpHidden]>;
 def mips32r6 : Flag<["-"], "mips32r6">,
   Alias<march_EQ>, AliasArgs<["mips32r6"]>,
   HelpText<"Equivalent to -march=mips32r6">, Flags<[HelpHidden]>;
@@ -1368,6 +1374,12 @@
 def mips64r2 : Flag<["-"], "mips64r2">,
   Alias<march_EQ>, AliasArgs<["mips64r2"]>,
   HelpText<"Equivalent to -march=mips64r2">, Flags<[HelpHidden]>;
+def mips64r3 : Flag<["-"], "mips64r3">,
+  Alias<march_EQ>, AliasArgs<["mips64r3"]>,
+  HelpText<"Equivalent to -march=mips64r3">, Flags<[HelpHidden]>;
+def mips64r5 : Flag<["-"], "mips64r5">,
+  Alias<march_EQ>, AliasArgs<["mips64r5"]>,
+  HelpText<"Equivalent to -march=mips64r5">, Flags<[HelpHidden]>;
 def mips64r6 : Flag<["-"], "mips64r6">,
   Alias<march_EQ>, AliasArgs<["mips64r6"]>,
   HelpText<"Equivalent to -march=mips64r6">, Flags<[HelpHidden]>;
Index: lib/Basic/Targets.cpp
===================================================================
--- lib/Basic/Targets.cpp
+++ lib/Basic/Targets.cpp
@@ -5688,9 +5688,13 @@
         .Case("mips5", true)
         .Case("mips32", IsMips32)
         .Case("mips32r2", IsMips32)
+        .Case("mips32r3", IsMips32)
+        .Case("mips32r5", IsMips32)
         .Case("mips32r6", IsMips32)
         .Case("mips64", true)
         .Case("mips64r2", true)
+        .Case("mips64r3", true)
+        .Case("mips64r5", true)
         .Case("mips64r6", true)
         .Case("octeon", true)
         .Default(false);
@@ -5953,6 +5957,10 @@
       Builder.defineMacro("__mips_isa_rev", "1");
     else if (CPUStr == "mips32r2")
       Builder.defineMacro("__mips_isa_rev", "2");
+    else if (CPUStr == "mips32r3")
+      Builder.defineMacro("__mips_isa_rev", "3");
+    else if (CPUStr == "mips32r5")
+      Builder.defineMacro("__mips_isa_rev", "5");
     else if (CPUStr == "mips32r6")
       Builder.defineMacro("__mips_isa_rev", "6");
 
@@ -6102,6 +6110,10 @@
       Builder.defineMacro("__mips_isa_rev", "1");
     else if (CPUStr == "mips64r2")
       Builder.defineMacro("__mips_isa_rev", "2");
+    else if (CPUStr == "mips64r3")
+      Builder.defineMacro("__mips_isa_rev", "3");
+    else if (CPUStr == "mips64r5")
+      Builder.defineMacro("__mips_isa_rev", "5");
     else if (CPUStr == "mips64r6")
       Builder.defineMacro("__mips_isa_rev", "6");
 
Index: lib/Driver/Tools.cpp
===================================================================
--- lib/Driver/Tools.cpp
+++ lib/Driver/Tools.cpp
@@ -5626,8 +5626,8 @@
 
   return llvm::StringSwitch<bool>(CPUName)
              .Cases("mips2", "mips3", "mips4", "mips5", true)
-             .Cases("mips32", "mips32r2", true)
-             .Cases("mips64", "mips64r2", true)
+             .Cases("mips32", "mips32r2", "mips32r3", "mips32r5", true)
+             .Cases("mips64", "mips64r2", "mips64r3", "mips64r5", true)
              .Default(false);
 }
 
Index: test/Driver/mips-as.c
===================================================================
--- test/Driver/mips-as.c
+++ test/Driver/mips-as.c
@@ -98,6 +98,16 @@
 // RUN:   | FileCheck -check-prefix=MIPS-ALIAS-32R2 %s
 // MIPS-ALIAS-32R2: as{{(.exe)?}}" "-march" "mips32r2" "-mabi" "32" "-mno-shared" "-call_nonpic" "-EB"
 //
+// RUN: %clang -target mips-linux-gnu -mips32r3 -### \
+// RUN:   -no-integrated-as -c %s 2>&1 \
+// RUN:   | FileCheck -check-prefix=MIPS-ALIAS-32R3 %s
+// MIPS-ALIAS-32R3: as{{(.exe)?}}" "-march" "mips32r3" "-mabi" "32" "-mno-shared" "-call_nonpic" "-EB"
+//
+// RUN: %clang -target mips-linux-gnu -mips32r5 -### \
+// RUN:   -no-integrated-as -c %s 2>&1 \
+// RUN:   | FileCheck -check-prefix=MIPS-ALIAS-32R5 %s
+// MIPS-ALIAS-32R5: as{{(.exe)?}}" "-march" "mips32r5" "-mabi" "32" "-mno-shared" "-call_nonpic" "-EB"
+//
 // RUN: %clang -target mips-linux-gnu -mips32r6 -### \
 // RUN:   -no-integrated-as -c %s 2>&1 \
 // RUN:   | FileCheck -check-prefix=MIPS-ALIAS-32R6 %s
@@ -113,6 +123,16 @@
 // RUN:   | FileCheck -check-prefix=MIPS-ALIAS-64R2 %s
 // MIPS-ALIAS-64R2: as{{(.exe)?}}" "-march" "mips64r2" "-mabi" "64" "-mno-shared" "-KPIC" "-EB"
 //
+// RUN: %clang -target mips64-linux-gnu -mips64r3 -### \
+// RUN:   -no-integrated-as -c %s 2>&1 \
+// RUN:   | FileCheck -check-prefix=MIPS-ALIAS-64R3 %s
+// MIPS-ALIAS-64R3: as{{(.exe)?}}" "-march" "mips64r3" "-mabi" "64" "-mno-shared" "-KPIC" "-EB"
+//
+// RUN: %clang -target mips64-linux-gnu -mips64r5 -### \
+// RUN:   -no-integrated-as -c %s 2>&1 \
+// RUN:   | FileCheck -check-prefix=MIPS-ALIAS-64R5 %s
+// MIPS-ALIAS-64R5: as{{(.exe)?}}" "-march" "mips64r5" "-mabi" "64" "-mno-shared" "-KPIC" "-EB"
+//
 // RUN: %clang -target mips64-linux-gnu -mips64r6 -### \
 // RUN:   -no-integrated-as -c %s 2>&1 \
 // RUN:   | FileCheck -check-prefix=MIPS-ALIAS-64R6 %s
Index: test/Preprocessor/init.c
===================================================================
--- test/Preprocessor/init.c
+++ test/Preprocessor/init.c
@@ -4264,6 +4264,24 @@
 // MIPS-ARCH-32R2:#define __mips_isa_rev 2
 //
 // RUN: %clang_cc1 -E -dM -ffreestanding -triple=mips-none-none \
+// RUN:            -target-cpu mips32r3 < /dev/null \
+// RUN:   | FileCheck -check-prefix MIPS-ARCH-32R3 %s
+//
+// MIPS-ARCH-32R3:#define _MIPS_ARCH "mips32r3"
+// MIPS-ARCH-32R3:#define _MIPS_ARCH_MIPS32R3 1
+// MIPS-ARCH-32R3:#define _MIPS_ISA _MIPS_ISA_MIPS32
+// MIPS-ARCH-32R3:#define __mips_isa_rev 3
+//
+// RUN: %clang_cc1 -E -dM -ffreestanding -triple=mips-none-none \
+// RUN:            -target-cpu mips32r5 < /dev/null \
+// RUN:   | FileCheck -check-prefix MIPS-ARCH-32R5 %s
+//
+// MIPS-ARCH-32R5:#define _MIPS_ARCH "mips32r5"
+// MIPS-ARCH-32R5:#define _MIPS_ARCH_MIPS32R5 1
+// MIPS-ARCH-32R5:#define _MIPS_ISA _MIPS_ISA_MIPS32
+// MIPS-ARCH-32R5:#define __mips_isa_rev 5
+//
+// RUN: %clang_cc1 -E -dM -ffreestanding -triple=mips-none-none \
 // RUN:            -target-cpu mips32r6 < /dev/null \
 // RUN:   | FileCheck -check-prefix MIPS-ARCH-32R6 %s
 //
@@ -4300,6 +4318,24 @@
 // MIPS-ARCH-64R2:#define __mips_isa_rev 2
 //
 // RUN: %clang_cc1 -E -dM -ffreestanding -triple=mips64-none-none \
+// RUN:            -target-cpu mips64r3 < /dev/null \
+// RUN:   | FileCheck -check-prefix MIPS-ARCH-64R3 %s
+//
+// MIPS-ARCH-64R3:#define _MIPS_ARCH "mips64r3"
+// MIPS-ARCH-64R3:#define _MIPS_ARCH_MIPS64R3 1
+// MIPS-ARCH-64R3:#define _MIPS_ISA _MIPS_ISA_MIPS64
+// MIPS-ARCH-64R3:#define __mips_isa_rev 3
+//
+// RUN: %clang_cc1 -E -dM -ffreestanding -triple=mips64-none-none \
+// RUN:            -target-cpu mips64r5 < /dev/null \
+// RUN:   | FileCheck -check-prefix MIPS-ARCH-64R5 %s
+//
+// MIPS-ARCH-64R5:#define _MIPS_ARCH "mips64r5"
+// MIPS-ARCH-64R5:#define _MIPS_ARCH_MIPS64R5 1
+// MIPS-ARCH-64R5:#define _MIPS_ISA _MIPS_ISA_MIPS64
+// MIPS-ARCH-64R5:#define __mips_isa_rev 5
+//
+// RUN: %clang_cc1 -E -dM -ffreestanding -triple=mips64-none-none \
 // RUN:            -target-cpu mips64r6 < /dev/null \
 // RUN:   | FileCheck -check-prefix MIPS-ARCH-64R6 %s
 //