[PATCH] [sanitizer][MIPS] Add --target flag for MIPS32

[Sagar Thakur]

Hi dsanders, samsonov, kcc,

Without the --target flag, clang uses the mips64 triple which selects the n64 abi. We need to add --target=mips-linux-gnu,  so that clang can select the correct abi for mips32r2.

REPOSITORY
  rL LLVM

http://reviews.llvm.org/D9249

Files:
  cmake/config-ix.cmake

Index: cmake/config-ix.cmake
===================================================================
--- cmake/config-ix.cmake
+++ cmake/config-ix.cmake
@@ -184,11 +184,11 @@
     # FIXME: Ideally, we would build the N32 library too.
     if("${COMPILER_RT_TEST_TARGET_ARCH}" MATCHES "mipsel|mips64el")
       # regex for mipsel, mips64el
-      test_target_arch(mipsel "" "-mips32r2")
-      test_target_arch(mips64el "" "-mips64r2 -mabi=n64")
+      test_target_arch(mipsel "" "-mips32r2\t--target=mipsel-linux-gnu")
+      test_target_arch(mips64el "" "-mips64r2\t-mabi=n64")
     else()
-      test_target_arch(mips "" "-mips32r2")
-      test_target_arch(mips64 "" "-mips64r2 -mabi=n64")
+      test_target_arch(mips "" "-mips32r2\t--target=mips-linux-gnu")
+      test_target_arch(mips64 "" "-mips64r2\t-mabi=n64")
     endif()
   elseif("${COMPILER_RT_TEST_TARGET_ARCH}" MATCHES "arm")
     test_target_arch(arm "" "-march=armv7-a")

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