Add mips32 to LLVM configure's list of allowed Subzero targets

autoconf/configure.ac

 dnl === configure.ac --------------------------------------------------------===
 dnl                     The LLVM Compiler Infrastructure
 dnl
 dnl This file is distributed under the University of Illinois Open Source
 dnl License. See LICENSE.TXT for details.
 dnl
 dnl===-----------------------------------------------------------------------===
 dnl This is the LLVM configuration script. It is processed by the autoconf
 dnl program to produce a script named configure. This script contains the
 dnl configuration checks that LLVM needs in order to support multiple platforms.
@@ skipping 1051 matching lines @@
     [Build specific subzero targets: target1,target2,...(default=none)]),,
     enableval=none)
 case "$enableval" in
   none) ;;
   *)for a_target in `echo $enableval|sed -e 's/,/ /g' ` ; do
       case "$a_target" in
         X8632)  SUBZERO_TARGETS_TO_BUILD="X8632 $SUBZERO_TARGETS_TO_BUILD" ;;
         X8664)  SUBZERO_TARGETS_TO_BUILD="X8664 $SUBZERO_TARGETS_TO_BUILD" ;;
         ARM32)  SUBZERO_TARGETS_TO_BUILD="ARM32 $SUBZERO_TARGETS_TO_BUILD" ;;
         ARM64)  SUBZERO_TARGETS_TO_BUILD="ARM64 $SUBZERO_TARGETS_TO_BUILD" ;;
+        MIPS32) SUBZERO_TARGETS_TO_BUILD="MIPS32 $SUBZERO_TARGETS_TO_BUILD" ;;
         *) AC_MSG_ERROR([Unrecognized subzero target $a_target]) ;;
       esac
   done
   ;;
 esac
 
 dnl Build the SUBZERO_ENUM_TARGETS macro for SZTargets.def.
 SUBZERO_ENUM_TARGETS=""
 for target_to_build in $SUBZERO_TARGETS_TO_BUILD; do
   SUBZERO_ENUM_TARGETS="SUBZERO_TARGET($target_to_build) $SUBZERO_ENUM_TARGETS"
@@ skipping 994 matching lines @@
 AC_CONFIG_MAKEFILE(test/Makefile.tests)
 AC_CONFIG_MAKEFILE(unittests/Makefile)
 AC_CONFIG_MAKEFILE(tools/Makefile)
 AC_CONFIG_MAKEFILE(utils/Makefile)
 AC_CONFIG_MAKEFILE(projects/Makefile)
 AC_CONFIG_MAKEFILE(bindings/Makefile)
 AC_CONFIG_MAKEFILE(bindings/ocaml/Makefile.ocaml)
 
 dnl Finally, crank out the output
 AC_OUTPUT