Commits on Sep 9, 2016

1. Add s390x support …

   This adds support for building the Rust compiler and standard
   library for s390x-linux, allowing a full cross-bootstrap sequence
   to complete.  This includes:
   
   - Makefile/configure changes to allow native s390x builds
   - Full Rust compiler support for the s390x C ABI
     (only the non-vector ABI is supported at this point)
   - Port of the standard library to s390x
   - Update the liblibc submodule to a version including s390x support
   - Testsuite fixes to allow clean "make check" on s390x
   
   Caveats:
   
   - Resets base cpu to "z10" to bring support in sync with the default
     behaviour of other compilers on the platforms.  (Usually, upstream
     supports all older processors; a distribution build may then chose
     to require a more recent base version.)  (Also, using zEC12 causes
     failures in the valgrind tests since valgrind doesn't fully support
     this CPU yet.)
   
   - z13 vector ABI is not yet supported.  To ensure compatible code
     generation, the -vector feature is passed to LLVM.  Note that this
     means that even when compiling for z13, no vector instructions
     will be used.  In the future, support for the vector ABI should be
     added (this will require common code support for different ABIs
     that need different data_layout strings on the same platform).
   
   - Two test cases are (temporarily) ignored on s390x to allow passing
     the test suite.  The underlying issues still need to be fixed:
     * debuginfo/simd.rs fails because of incorrect debug information.
       This seems to be a LLVM bug (also seen with C code).
     * run-pass/union/union-basic.rs simply seems to be incorrect for
       all big-endian platforms.
   
   Signed-off-by: Ulrich Weigand <ulrich.weigand@de.ibm.com>

   

   uweigand committed Sep 9, 2016
   Configuration menu

   • View commit details
   • Copy full SHA for 19b8408
   • Browse repository at this point

   Copy the full SHA

   19b8408 View commit details

   Browse the repository at this point in the history