[Bug c/31741] New: dfp tests failing - internal compiler error

["rob1weld at aol dot com" <gcc-bugzilla at gcc dot gnu dot org>]

It looks like ALL the DFP tests are failing.

This is an early notification. I will e-mail full "make -i check" results after
all the tests have completed. There are also a few errors in "C" we did not
have
last week.

                === gcc Summary ===

# of expected passes            42626
# of unexpected failures        124      <--- Ouch, was only a few before
# of expected failures          116
# of unresolved testcases       87
# of untested testcases         28
# of unsupported tests          287


#/opt/gcc-4_2-build# gcc/xgcc -v
Using built-in specs.
Target: i686-pc-linux-gnu
Configured with: ../gcc-4_2-branch/configure --verbose
--enable-languages=c,ada,c++,fortran,java,objc,obj-c++ --with-tune=athlon-xp
--prefix=/usr --enable-objc-gc --enable-concept-checks --disable-multilib
--with-gxx-include-dir=/usr/include/c++/4.2 --enable-libstdcxx-debug
--enable-static --enable-shared --enable-initfini-array --enable-__cxa_atexit
--enable-threads=posix --enable-version-specific-runtime-libs --enable-libssp
--enable-libmudflap --enable-libgomp --disable-werror --enable-nls
--with-included-gettext --enable-decimal-float --with-long-double-128
--enable-debug --disable-sjlj-exceptions --enable-java-gc=boehm --with-x
--x-includes=/usr/X11R6/include --x-libraries=/usr/X11R6/lib
--enable-java-awt=gtk,xlib --enable-gtk-cairo --enable-qt-peer --enable-xmlj
--enable-gconf-peer --enable-tool-wrappers --with-gjdoc
--enable-portable-native-sync --enable-libgcj-multifile --with-stabs
--enable-hash-synchronization --enable-gc-debug --enable-interpreter
--with-system-zlib --enable-libada --with-tls --with-cpu=athlon-xp
--with-arch=athlon-xp --enable-checking
Thread model: posix
gcc version 4.2.0 20070427 (prerelease)

(Note: you'll need a lot of new libraries to actually compile with all those
options enabled - you might try just using --enable-decimal-float (possibly
--with-long-double-128 too)).


Here is a _small_ portion of gcc.log :

PASS: gcc.dg/compat/scalar-by-value-dfp c_compat_main_tst.o compile
Executing on host: /opt/gcc-4_2-build/gcc/xgcc -B/opt/gcc-4_2-build/gcc/   
-fno-show-column -c  -o c_compat_x_tst.o /r$
/root/downloads/gcc-4_2-branch/gcc/testsuite/gcc.dg/compat/scalar-by-value-dfp_x.c:
In function 'checkd128':
/root/downloads/gcc-4_2-branch/gcc/testsuite/gcc.dg/compat/scalar-by-value-dfp_x.c:149:
error: unrecognizable insn:
(insn 24 23 25 3 (set (subreg:TI (reg:TD 68) 0)
        (subreg:TI (const_double:TD 0 [0x0] 123.456 [N/A]) 0)) -1 (nil)
    (insn_list:REG_LIBCALL 32 (nil)))
/root/downloads/gcc-4_2-branch/gcc/testsuite/gcc.dg/compat/scalar-by-value-dfp_x.c:149:
internal compiler error: in ext$
Please submit a full bug report,
with preprocessed source if appropriate.
See <URL:http://gcc.gnu.org/bugs.html> for instructions.
compiler exited with status 1
output is:
/root/downloads/gcc-4_2-branch/gcc/testsuite/gcc.dg/compat/scalar-by-value-dfp_x.c:
In function 'checkd128':
/root/downloads/gcc-4_2-branch/gcc/testsuite/gcc.dg/compat/scalar-by-value-dfp_x.c:149:
error: unrecognizable insn:
(insn 24 23 25 3 (set (subreg:TI (reg:TD 68) 0)
        (subreg:TI (const_double:TD 0 [0x0] 123.456 [N/A]) 0)) -1 (nil)
    (insn_list:REG_LIBCALL 32 (nil)))
/root/downloads/gcc-4_2-branch/gcc/testsuite/gcc.dg/compat/scalar-by-value-dfp_x.c:149:
internal compiler error: in ext$
Please submit a full bug report,
with preprocessed source if appropriate.
See <URL:http://gcc.gnu.org/bugs.html> for instructions.
...(many more)...


-- 
           Summary: dfp tests failing - internal compiler error
           Product: gcc
           Version: 4.2.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: rob1weld at aol dot com
 GCC build triplet: i686-pc-linux-gnu
  GCC host triplet: i686-pc-linux-gnu
GCC target triplet: i686-pc-linux-gnu


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31741