[Bug tree-optimization/72817] [7 Regression] wrong code at -O3 on x86_64-linux-gnu (in both 32-bit and 64-bit modes)

[amker at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=72817

--- Comment #7 from amker at gcc dot gnu.org ---
(In reply to Bill Seurer from comment #5)
> The new test case pr72817.c hangs on powerpc both BE and LE
> 
> Executing on host: /home/seurer/gcc/build/gcc-trunk/gcc/xgcc
> -B/home/seurer/gcc/build/gcc-trunk/gcc/
> /home/seurer/gcc/gcc-trunk/gcc/testsuite/gcc.dg/tree-ssa/pr72817.c 
> -fno-diagnostics-show-caret -fdiagnostics-color=never   -O3  -lm    -o
> ./pr72817.exe    (timeout = 300)
> spawn /home/seurer/gcc/build/gcc-trunk/gcc/xgcc
> -B/home/seurer/gcc/build/gcc-trunk/gcc/
> /home/seurer/gcc/gcc-trunk/gcc/testsuite/gcc.dg/tree-ssa/pr72817.c
> -fno-diagnostics-show-caret -fdiagnostics-color=never -O3 -lm -o
> ./pr72817.exe
> PASS: gcc.dg/tree-ssa/pr72817.c (test for excess errors)
> Setting LD_LIBRARY_PATH to
> :/home/seurer/gcc/build/gcc-trunk/gcc::/home/seurer/gcc/build/gcc-trunk/gcc:/
> home/wschmidt/gcc/install/gcc-5_1/lib64
> spawn [open ...]
> WARNING: program timed out.
> FAIL: gcc.dg/tree-ssa/pr72817.c execution test
> testcase
> /home/seurer/gcc/gcc-trunk/gcc/testsuite/gcc.dg/tree-ssa/tree-ssa.exp
> completed in 301 seconds

Thanks for reporting.
This may indicate something is still wrong in NE_EXPR analysis.  I am OoO right
now and will look into this once I get back.