optimization/10876: [3.3/3.4 regression] [Sparc] ICE in calculate_giv_inc at unroll.c:1588 on FP code

[Aaron Williams]

After removing -fssa and a number of other options I still see the 
following, which is different in that abort is hit rather than segfault:

gcc -c -O3 gslfft_pp.c  -foptimize-register-move -frename-registers 
-fschedule-insns2 -fschedule-insns -frerun-loop-opt 
-frerun-cse-after-loop -floop-optimize -fpeephole -freduce-all-givs 
-fprefetch-loop-arrays -funroll-loops

<__FUNCTION__ warnings snipped>

gslfft.c: In function `gsl_power2_fft256analysis_skip2':
gslfft.c:3445: internal compiler error: in calculate_giv_inc, at 
unroll.c:1693
Please submit a full bug report,
with preprocessed source if appropriate.
See <URL:http://gcc.gnu.org/bugs.html> for instructions.