[PATCH][1/3] Re-submission of Altera Nios II port, gcc parts

[Chung-Lin Tang <cltang at codesourcery dot com>]

Hi, the last ping of the Nios II patches was:
http://gcc.gnu.org/ml/gcc-patches/2013-06/msg01416.html

After assessing the state, we feel it would be better to post a
re-submission of the newest patches.

The changes accumulated since the original post include:

1) Several bug fixes related to built-in function expanding.
2) A few holes in hard-float FPU code generation was plugged.
3) Support for parsing white-spaces in target attributes.
4) Revision of consistency check behavior of codes in custom instruction
built-ins.
5) Some new testcases.

The issues raised by Joseph in the first round of reviewing have been
addressed. Testing has been re-done on both 32-bit and 64-bit hosts.

PR55035 appears to not have been resolved yet, which affects nios2 among
several other targets, thus configured with --enable-werror-always still
does not build.

As before, Sandra and me will serve as nios2 port maintainers.

Attached is the patch for the compiler-proper.

Thanks,
Chung-Lin

2013-07-14  Chung-Lin Tang  <cltang@codesourcery.com>
            Sandra Loosemore  <sandra@codesourcery.com>
            Based on patches from Altera Corporation

        * config.gcc (nios2-*-*): Add nios2 config targets.
        * configure.ac (TLS_SECTION_ASM_FLAG): Add nios2 case.
        ("$cpu_type"): Add nios2 as new cpu type.
        * configure: Regenerate.
        * config/nios2/nios2.c: New file.
        * config/nios2/nios2.h: New file.
        * config/nios2/nios2-opts.h: New file.
        * config/nios2/nios2-protos.h: New file.
        * config/nios2/elf.h: New file.
        * config/nios2/elf.opt: New file.
        * config/nios2/linux.h: New file.
        * config/nios2/nios2.opt: New file.
        * config/nios2/nios2.md: New file.
        * config/nios2/predicates.md: New file.
        * config/nios2/constraints.md: New file.
        * config/nios2/t-nios2: New file.
        * common/config/nios2/nios2-common.c: New file.
        * doc/invoke.texi (Nios II options): Document Nios II specific
        options.
        * doc/md.texi (Nios II family): Document Nios II specific
        constraints.
        * doc/extend.texi (Function Specific Option Pragmas): Document
        Nios II supported target pragma functionality.

Attachment: nios2-gcc.patch
Description: Text document