[Myriad] Pass -Xclang and -mllvm flags to moviCompile

[jyknight]

Will submit for you since you don't have an svn account.

lib/Driver/ToolChains/Myriad.cpp

if (JA.getKind() == Action::PreprocessJobClass) {
     CmdArgs.push_back("-E");
   } else {
     assert(Output.getType() == types::TY_PP_Asm); // Require preprocessed asm.
     CmdArgs.push_back("-S");
     CmdArgs.push_back("-fno-exceptions"); // Always do this even if unspecified.
   }
   CmdArgs.push_back("-DMYRIAD2");
 
-  // Append all -I, -iquote, -isystem paths, defines/undefines,
-  // 'f' flags, optimize flags, and warning options.
+  // Append all -I, -iquote, -isystem paths, defines/undefines, 'f'
+  // flags, 'g' flags, 'M' flags, optimize flags, warning options,
+  // mcpu flags, mllvm flags, and Xclang flags.
   // These are spelled the same way in clang and moviCompile.
   Args.AddAllArgsExcept(
       CmdArgs,
       {options::OPT_I_Group, options::OPT_clang_i_Group, 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_mcpu_EQ},
+       options::OPT_O_Group, options::OPT_W_Group, options::OPT_mcpu_EQ,
+       options::OPT_mllvm, options::OPT_Xclang},
       {options::OPT_fno_split_dwarf_inlining});
   Args.hasArg(options::OPT_fno_split_dwarf_inlining); // Claim it if present.
 
   // 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'
   // file, not the '.s' file produced by this step. For example, instead of
   //  /tmp/mumble.s: mumble.c .../someheader.h
   // the filename on the lefthand side should be "mumble.o"

test/Driver/myriad-toolchain.c

 
 // RUN: %clang -target shave-myriad -c -### %s -Icommon -iquote quotepath -isystem syspath 2>&1 \
 // RUN:   | FileCheck %s -check-prefix=INCLUDES
 // INCLUDES: "-iquote" "quotepath" "-isystem" "syspath"
 
 // -fno-split-dwarf-inlining is consumed but not passed to moviCompile.
 // RUN: %clang -target shave-myriad -c -### %s -g -fno-inline-functions \
 // RUN: -fno-inline-functions-called-once -Os -Wall -MF dep.d -fno-split-dwarf-inlining \
-// RUN: -ffunction-sections 2>&1 | FileCheck %s -check-prefix=PASSTHRU_OPTIONS
+// RUN: -ffunction-sections -Xclang -xclangflag -mllvm -llvm-flag 2>&1 \
+// RUN:   | FileCheck %s -check-prefix=PASSTHRU_OPTIONS
 // PASSTHRU_OPTIONS: "-g" "-fno-inline-functions" "-fno-inline-functions-called-once"
 // PASSTHRU_OPTIONS: "-Os" "-Wall" "-MF" "dep.d" "-ffunction-sections"
+// PASSTHRU_OPTIONS: "-Xclang" "-xclangflag" "-mllvm" "-llvm-flag"
 
 // 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" "-DMYRIAD2" "-MD" "-MF" "dep.d" "-MT" "foo.o"
 
 // 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" "-DMYRIAD2" "-std=gnu++11" "-mcpu=anothercpu"