[Compiler-rt][MIPS] Fix simple test failure when using gcc

[mohit.bhakkad]

Summary

n64 is invalid argument to -mabi for gcc compiler:

gcc: error: unrecognized argument in option ‘-mabi=n64’
gcc: note: valid arguments to ‘-mabi=’ are: 32 64 eabi n32 o64

and in clang both -mabi=n64 and -mabi=64 points to n64 abi.

[mohit.bhakkad]

Hi @dsanders, could you please review this?

[dsanders]

This patch hasn't CC'd the list. Please mark this review abandoned and re-post it with the list CC'd.

cmake/base-config-ix.cmake

elseif("${COMPILER_RT_DEFAULT_TARGET_ARCH}" MATCHES "s390x")
       test_target_arch(s390x "" "")
     elseif("${COMPILER_RT_DEFAULT_TARGET_ARCH}" MATCHES "mipsel|mips64el")
       # Gcc doesn't accept -m32/-m64 so we do the next best thing and use
       # -mips32r2/-mips64r2. We don't use -mips1/-mips3 because we want to match
       # clang's default CPU's. In the 64-bit case, we must also specify the ABI
       # since the default ABI differs between gcc and clang.
       # FIXME: Ideally, we would build the N32 library too.
       test_target_arch(mipsel "" "-mips32r2" "--target=mipsel-linux-gnu")
-      test_target_arch(mips64el "" "-mips64r2" "--target=mips64el-linux-gnu" "-mabi=n64")
+      test_target_arch(mips64el "" "-mips64r2" "--target=mips64el-linux-gnu" "-mabi=64")
     elseif("${COMPILER_RT_DEFAULT_TARGET_ARCH}" MATCHES "mips")
       test_target_arch(mips "" "-mips32r2" "--target=mips-linux-gnu")
-      test_target_arch(mips64 "" "-mips64r2" "--target=mips64-linux-gnu" "-mabi=n64")
+      test_target_arch(mips64 "" "-mips64r2" "--target=mips64-linux-gnu" "-mabi=64")
     elseif("${COMPILER_RT_DEFAULT_TARGET_ARCH}" MATCHES "arm")
       test_target_arch(arm "" "-march=armv7-a" "-mfloat-abi=soft")
       test_target_arch(armhf "" "-march=armv7-a" "-mfloat-abi=hard")
     elseif("${COMPILER_RT_DEFAULT_TARGET_ARCH}" MATCHES "aarch32")
       test_target_arch(aarch32 "" "-march=armv8-a")
     elseif("${COMPILER_RT_DEFAULT_TARGET_ARCH}" MATCHES "aarch64")
       test_target_arch(aarch64 "" "-march=armv8-a")
     elseif("${COMPILER_RT_DEFAULT_TARGET_ARCH}" MATCHES "wasm32")
       test_target_arch(wasm32 "" "--target=wasm32-unknown-unknown")
     elseif("${COMPILER_RT_DEFAULT_TARGET_ARCH}" MATCHES "wasm64")
       test_target_arch(wasm64 "" "--target=wasm64-unknown-unknown")
     endif()
     set(COMPILER_RT_OS_SUFFIX "")
   endif()
 endmacro()