[Bug target/77468] [7 Regression] C-ray regression on Aarch64

[aldyh at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77468

Aldy Hernandez <aldyh at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2017-01-24
                 CC|                            |aldyh at gcc dot gnu.org
     Ever confirmed|0                           |1

--- Comment #9 from Aldy Hernandez <aldyh at gcc dot gnu.org> ---
Confirmed with:

$ wget http://www.phoronix-test-suite.com/benchmark-files/c-ray-1.1.tar.gz
$ tar -xzf c-ray-1.1.tar.gz
$ cd c-ray-1.1


$ make clean; make CC="~/bld/trunk/install/bin/gcc"
rm -f c-ray-mt.o c-ray-mt
~/bld/trunk/install/bin/gcc -O3 -ffast-math -mcpu=cortex-a53   -c -o c-ray-mt.o
c-ray-mt.c
~/bld/trunk/install/bin/gcc -o c-ray-mt c-ray-mt.o -lm -lpthread
$ ./c-ray-mt -t 32  -s 800x600 -r 8 -i sphfract -o output.ppm
c-ray-mt v1.1
Rendering took: 8 seconds (8766 milliseconds)


$ make clean; make CC=gcc-5.3.1
rm -f c-ray-mt.o c-ray-mt
gcc-5.3.1 -O3 -ffast-math -mcpu=cortex-a53   -c -o c-ray-mt.o c-ray-mt.c
gcc-5.3.1 -o c-ray-mt c-ray-mt.o -lm -lpthread
aldyh@gcc117:~/c-ray-1.1> ./c-ray-mt -t 32  -s 800x600 -r 8 -i sphfract -o
output.ppm
c-ray-mt v1.1
Rendering took: 7 seconds (7606 milliseconds)

I'll bisect this.