Index: lib/Driver/Tools.cpp
===================================================================
--- lib/Driver/Tools.cpp
+++ lib/Driver/Tools.cpp
@@ -10431,7 +10431,6 @@
     CmdArgs.push_back("-S");
     CmdArgs.push_back("-fno-exceptions"); // Always do this even if unspecified.
   }
-  CmdArgs.push_back("-mcpu=myriad2");
   CmdArgs.push_back("-DMYRIAD2");
 
   // Append all -I, -iquote, -isystem paths, defines/undefines,
@@ -10441,7 +10440,8 @@
                             options::OPT_std_EQ, options::OPT_D, options::OPT_U,
                             options::OPT_f_Group, options::OPT_f_clang_Group,
                             options::OPT_g_Group, options::OPT_M_Group,
-                            options::OPT_O_Group, options::OPT_W_Group});
+                            options::OPT_O_Group, options::OPT_W_Group,
+                            options::OPT_mcpu_EQ});
 
   // If we're producing a dependency file, and assembly is the final action,
   // then the name of the target in the dependency file should be the '.o'
@@ -10481,7 +10481,10 @@
   assert(Output.getType() == types::TY_Object);
 
   CmdArgs.push_back("-no6thSlotCompression");
-  CmdArgs.push_back("-cv:myriad2"); // Chip Version
+  const Arg *CPUArg = Args.getLastArg(options::OPT_mcpu_EQ);
+  if (CPUArg)
+    CmdArgs.push_back(
+        Args.MakeArgString("-cv:" + StringRef(CPUArg->getValue())));
   CmdArgs.push_back("-noSPrefixing");
   CmdArgs.push_back("-a"); // Mystery option.
   Args.AddAllArgValues(CmdArgs, options::OPT_Wa_COMMA, options::OPT_Xassembler);
Index: test/Driver/myriad-toolchain.c
===================================================================
--- test/Driver/myriad-toolchain.c
+++ test/Driver/myriad-toolchain.c
@@ -36,10 +36,10 @@
 // As such, we test only for a trailing quote in its rendering.
 // The same goes for "moviAsm".
 
-// RUN: %clang -target shave-myriad -c -### %s -isystem somewhere -Icommon -Wa,-yippee 2>&1 \
+// RUN: %clang -target shave-myriad -mcpu=myriad1 -c -### %s -isystem somewhere -Icommon -Wa,-yippee 2>&1 \
 // RUN:   | FileCheck %s -check-prefix=MOVICOMPILE
-// MOVICOMPILE: moviCompile{{(.exe)?}}" "-S" "-fno-exceptions" "-mcpu=myriad2" "-DMYRIAD2" "-isystem" "somewhere" "-I" "common"
-// MOVICOMPILE: moviAsm{{(.exe)?}}" "-no6thSlotCompression" "-cv:myriad2" "-noSPrefixing" "-a"
+// MOVICOMPILE: moviCompile{{(.exe)?}}" "-S" "-fno-exceptions" "-DMYRIAD2" "-mcpu=myriad1" "-isystem" "somewhere" "-I" "common"
+// MOVICOMPILE: moviAsm{{(.exe)?}}" "-no6thSlotCompression" "-cv:myriad1" "-noSPrefixing" "-a"
 // MOVICOMPILE: "-yippee" "-i:somewhere" "-i:common" "-elf"
 
 // RUN: %clang -target shave-myriad -c -### %s -DEFINE_ME -UNDEFINE_ME 2>&1 \
@@ -58,15 +58,15 @@
 
 // RUN: %clang -target shave-myriad -c %s -o foo.o -### -MD -MF dep.d 2>&1 \
 // RUN:   | FileCheck %s -check-prefix=MDMF
-// MDMF: "-S" "-fno-exceptions" "-mcpu=myriad2" "-DMYRIAD2" "-MD" "-MF" "dep.d" "-MT" "foo.o"
+// MDMF: "-S" "-fno-exceptions" "-DMYRIAD2" "-MD" "-MF" "dep.d" "-MT" "foo.o"
 
-// RUN: %clang -target shave-myriad -std=gnu++11 -S %s -o foo.o -### 2>&1 \
+// RUN: %clang -target shave-myriad -std=gnu++11 -mcpu=anothercpu -S %s -o foo.o -### 2>&1 \
 // RUN:   | FileCheck %s -check-prefix=STDEQ
-// STDEQ: "-S" "-fno-exceptions" "-mcpu=myriad2" "-DMYRIAD2" "-std=gnu++11"
+// STDEQ: "-S" "-fno-exceptions" "-DMYRIAD2" "-std=gnu++11" "-mcpu=anothercpu"
 
 // RUN: %clang -target shave-myriad -E -Ifoo %s -o foo.i -### 2>&1 \
 // RUN:   | FileCheck %s -check-prefix=PREPROCESS
-// PREPROCESS: "-E" "-mcpu=myriad2" "-DMYRIAD2" "-I" "foo"
+// PREPROCESS: "-E" "-DMYRIAD2" "-I" "foo"
 
 // RUN: %clang -target sparc-myriad -### --driver-mode=g++ %s 2>&1 | FileCheck %s --check-prefix=STDLIBCXX
 // STDLIBCXX: "-lstdc++" "-lc" "-lgcc"