GCC 4.3 ia64 bootstrap failure

[Grigory Zagorodnev <grigory_zagorodnev at linux dot intel dot com>]

Hi!
There is a bootstrap failure of 4.3 compiler at ia64. Source revision is 
122087, last revision known to be good is 121993. I'm working on a 
reproducer and revision search.

/gcc-43/bld/./gcc/xgcc -B/gcc-43/bld/./gcc/ -B/gcc-43/usr/ia64-r
edhat-linux/bin/ -B/gcc-43/usr/ia64-redhat-linux/lib/ -isystem 
/gcc-43/usr/ia64-redhat-linux/include -isystem 
/gcc-43/usr/ia64-redhat-linux/sys-include -g -fkeep-inline-functions -O2 
 -O2 -g -O2  -DIN_GCC    -DUSE_LIBUNWIND_EXCEPTIONS -W -Wall 
-Wwrite-strings -Wstrict-prototypes -Wmissing-prototypes 
-Wold-style-definition  -isystem ./include  -fPIC -DUSE_GAS_SYMVER -g 
-DHAVE_GTHR_DEFAULT -DIN_LIBGCC2 -D__GCC_FLOAT_NOT_NEEDED   -I. -I. 
-I../.././gcc -I/home/testbot/bootstrap/010886/src/libgcc 
-I/gcc-43/src/libgcc/. -I/gcc-43/src/libgcc/../gcc 
-I/gcc-43/src/libgcc/../include -I/gcc-43/src/libgcc/../libdecnumber 
-I../../libdecnumber -o unwind-ia64.o -MT unwind-ia64.o -MD -MP -MF 
unwind-ia64.dep -fexceptions -c 
/gcc-43/src/libgcc/../gcc/config/ia64/unwind-ia64.c -fvisibility=hidden 
-DHIDE_EXPORTS
/gcc-43/src/libgcc/../gcc/unwind.inc: In function '_Unwind_Backtrace':
/gcc-43/src/libgcc/../gcc/unwind.inc:287: internal compiler error: tree 
check: expected class 'expression', have 'constant' (integer_cst) in 
ia64_expand_builtin, at config/ia64/ia64.c:9194
Please submit a full bug report,
with preprocessed source if appropriate.
See <URL:http://gcc.gnu.org/bugs.html> for instructions.

Does anyone see the same?

- Grigory