[PATCH] [RFC] Compiler-RT on ARM via CMake

[Saleem Abdulrasool]

On Thu, Jan 23, 2014 at 7:07 AM, Renato Golin <renato.golin at linaro.org>wrote:

> Hi samsonov, asl,
>
> First attempt to compile the RT library on ARM via CMake.
>
> The current changes builds:
>   lib/clang/3.5/lib/linux/libclang_rt.arm.a
>   lib/clang/3.5/lib/linux/libclang_rt.san-arm.a
>
> The UBSan tests are looking for:
>   lib/clang/3.5/lib/linux/libclang_rt.san-armv7l.a
>   lib/clang/3.5/lib/linux/libclang_rt.ubsan-armv7l.a
>   lib/clang/3.5/lib/linux/libclang_rt.ubsan_cxx-armv7l.a
>
> So, not only it's looking for the wrong arch name (the libs should work on
> all ARM, so I don't think we should name it armv7), but it's also looking
> for the UBSan libraries, which weren't compiled. I'm not sure why not...
>

How would this deal with hard-fp vs soft-fp?  (I assume that soft-float is
entirely pointless).


> http://llvm-reviews.chandlerc.com/D2604
>
> Files:
>   CMakeLists.txt
>   lib/CMakeLists.txt
>   lib/dfsan/lit_tests/lit.cfg
>   lib/ubsan/lit_tests/lit.common.cfg
>
> Index: CMakeLists.txt
> ===================================================================
> --- CMakeLists.txt
> +++ CMakeLists.txt
> @@ -98,6 +98,8 @@
>    test_target_arch(i386 ${TARGET_32_BIT_CFLAGS})
>  elseif("${LLVM_NATIVE_ARCH}" STREQUAL "PowerPC")
>    test_target_arch(powerpc64 ${TARGET_64_BIT_CFLAGS})
> +elseif("${LLVM_NATIVE_ARCH}" STREQUAL "ARM")
> +  test_target_arch(arm "")
>  endif()
>
>  # We only support running instrumented tests when we're not cross
> compiling
> @@ -210,7 +212,7 @@
>  # Architectures supported by Sanitizer runtimes. Specific sanitizers may
>  # support only subset of these (e.g. TSan works on x86_64 only).
>  filter_available_targets(SANITIZER_COMMON_SUPPORTED_ARCH
> -  x86_64 i386 powerpc64)
> +  x86_64 i386 powerpc64 arm)
>
>  add_subdirectory(include)
>
> Index: lib/CMakeLists.txt
> ===================================================================
> --- lib/CMakeLists.txt
> +++ lib/CMakeLists.txt
> @@ -195,8 +195,72 @@
>    i386/umoddi3.S
>    ${GENERIC_SOURCES})
>
> +set(arm_SOURCES
> +  arm/adddf3vfp.S
> +  arm/extendsfdf2vfp.S
> +  arm/nedf2vfp.S
> +  arm/addsf3vfp.S
> +  arm/fixdfsivfp.S
> +  arm/negdf2vfp.S
> +  arm/aeabi_dcmp.S
> +  arm/fixsfsivfp.S
> +  arm/negsf2vfp.S
> +  arm/aeabi_fcmp.S
> +  arm/fixunsdfsivfp.S
> +  arm/nesf2vfp.S
> +  arm/aeabi_idivmod.S
> +  arm/fixunssfsivfp.S
> +  arm/restore_vfp_d8_d15_regs.S
> +  arm/aeabi_ldivmod.S
> +  arm/floatsidfvfp.S
> +  arm/save_vfp_d8_d15_regs.S
> +  arm/aeabi_memcmp.S
> +  arm/floatsisfvfp.S
> +  arm/aeabi_memcpy.S
> +  arm/floatunssidfvfp.S
> +  arm/subdf3vfp.S
> +  arm/aeabi_memmove.S
> +  arm/floatunssisfvfp.S
> +  arm/subsf3vfp.S
> +  arm/aeabi_memset.S
> +  arm/gedf2vfp.S
> +  arm/switch16.S
> +  arm/aeabi_uidivmod.S
> +  arm/gesf2vfp.S
> +  arm/switch32.S
> +  arm/aeabi_uldivmod.S
> +  arm/gtdf2vfp.S
> +  arm/switch8.S
> +  arm/bswapdi2.S
> +  arm/gtsf2vfp.S
> +  arm/switchu8.S
> +  arm/bswapsi2.S
> +  arm/ledf2vfp.S
> +  arm/sync_synchronize.S
> +  arm/comparesf2.S
> +  arm/lesf2vfp.S
> +  arm/truncdfsf2vfp.S
> +  arm/divdf3vfp.S
> +  arm/ltdf2vfp.S
> +  arm/udivmodsi4.S
> +  arm/divmodsi4.S
> +  arm/ltsf2vfp.S
> +  arm/udivsi3.S
> +  arm/divsf3vfp.S
> +  arm/Makefile.mk
> +  arm/umodsi3.S
> +  arm/divsi3.S
> +  arm/modsi3.S
> +  arm/unorddf2vfp.S
> +  arm/eqdf2vfp.S
> +  arm/muldf3vfp.S
> +  arm/unordsf2vfp.S
> +  arm/eqsf2vfp.S
> +  arm/mulsf3vfp.S
> +  ${GENERIC_SOURCES})
> +
>  if (NOT WIN32)
> -  foreach(arch x86_64 i386)
> +  foreach(arch x86_64 i386 arm)
>      if(CAN_TARGET_${arch})
>        add_compiler_rt_static_runtime(clang_rt.${arch} ${arch}
>          SOURCES ${${arch}_SOURCES}
> Index: lib/dfsan/lit_tests/lit.cfg
> ===================================================================
> --- lib/dfsan/lit_tests/lit.cfg
> +++ lib/dfsan/lit_tests/lit.cfg
> @@ -67,3 +67,11 @@
>  # DataFlowSanitizer tests are currently supported on Linux only.
>  if config.host_os not in ['Linux']:
>    config.unsupported = True
> +
> +# We're building the sanitizers on ARM, but the tests are looking for the
> +# wrong name of static objects, disable for now
> +if 'armv4' in config.root.target_triple or \
> +   'armv5' in config.root.target_triple or \
> +   'armv6' in config.root.target_triple or \
> +   'armv7' in config.root.target_triple:
> +    config.unsupported = True
> Index: lib/ubsan/lit_tests/lit.common.cfg
> ===================================================================
> --- lib/ubsan/lit_tests/lit.common.cfg
> +++ lib/ubsan/lit_tests/lit.common.cfg
> @@ -28,4 +28,12 @@
>  if config.host_os not in ['Linux', 'Darwin']:
>    config.unsupported = True
>
> +# We're building the sanitizers on ARM, but the tests are looking for the
> +# wrong name of static objects, disable for now
> +if 'armv4' in config.root.target_triple or \
> +   'armv5' in config.root.target_triple or \
> +   'armv6' in config.root.target_triple or \
> +   'armv7' in config.root.target_triple:
> +    config.unsupported = True
> +
>  config.pipefail = False
>
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>


-- 
Saleem Abdulrasool
compnerd (at) compnerd (dot) org
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