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Re: [PATCH PR70729] The second part of patch.


On Thu, Jun 30, 2016 at 03:16:51PM +0300, Yuri Rumyantsev wrote:
> Hi Grüße.
> 
> Could you please tell me how to reproduce your regression - did not
> see any new failures in my local area:
> 
> PASS: libgomp.fortran/examples-4/simd-2.f90   -O0  (test for excess errors)
> PASS: libgomp.fortran/examples-4/simd-2.f90   -O0  execution test
> PASS: libgomp.fortran/examples-4/simd-2.f90   -O1  (test for excess errors)
> PASS: libgomp.fortran/examples-4/simd-2.f90   -O1  execution test
> PASS: libgomp.fortran/examples-4/simd-2.f90   -O2  (test for excess errors)
> PASS: libgomp.fortran/examples-4/simd-2.f90   -O2  execution test
> PASS: libgomp.fortran/examples-4/simd-2.f90   -O3 -fomit-frame-pointer
> -funroll-loops -fpeel-loops -ftracer -finline-functions  (test for
> excess errors)
> PASS: libgomp.fortran/examples-4/simd-2.f90   -O3 -fomit-frame-pointer
> -funroll-loops -fpeel-loops -ftracer -finline-functions  execution
> test
> PASS: libgomp.fortran/examples-4/simd-2.f90   -O3 -g  (test for excess errors)
> PASS: libgomp.fortran/examples-4/simd-2.f90   -O3 -g  execution test
> PASS: libgomp.fortran/examples-4/simd-2.f90   -Os  (test for excess errors)
> PASS: libgomp.fortran/examples-4/simd-2.f90   -Os  execution test
> 
> I used HASWELL machine for it since test requires target avx.

It fails everywhere for me, without offloading configured, both 32-bit and 64-bit.
$ /home/jakub/src/gcc/obj20/gcc/xgcc -B/home/jakub/src/gcc/obj20/gcc/ ../../../../libgomp/testsuite/libgomp.fortran/examples-4/simd-2.f90   -B/home/jakub/src/gcc/obj20/x86_64-pc-linux-gnu/./libgomp/ -B/home/jakub/src/gcc/obj20/x86_64-pc-linux-gnu/./libgomp/.libs -I/home/jakub/src/gcc/obj20/x86_64-pc-linux-gnu/./libgomp -I../../../../libgomp/testsuite/../../include -I../../../../libgomp/testsuite/.. -fmessage-length=0 -fno-diagnostics-show-caret -Wno-hsa -fdiagnostics-color=never -fopenmp -B/home/jakub/src/gcc/obj20/x86_64-pc-linux-gnu/./libgomp/../libquadmath/.libs/   -O2  -msse2 -mavx -B/home/jakub/src/gcc/obj20/x86_64-pc-linux-gnu/./libgomp/../libgfortran/.libs -fintrinsic-modules-path=/home/jakub/src/gcc/obj20/x86_64-pc-linux-gnu/./libgomp   -L/home/jakub/src/gcc/obj20/x86_64-pc-linux-gnu/./libgomp/.libs -L/home/jakub/src/gcc/obj20/x86_64-pc-linux-gnu/./libgomp/../libquadmath/.libs/ -L/home/jakub/src/gcc/obj20/x86_64-pc-linux-gnu/./libgomp/../libgfortran/.libs -lgfortran -lm  -o ./simd-2.exe -Wl,-rpath,../.libs/ -march=haswell
$ ./simd-2.exe

Program received signal SIGSEGV: Segmentation fault - invalid memory reference.

Backtrace for this error:
#0  0x7F7548CDBD58
#1  0x7F7548CDAEE0
#2  0x3405234A4F
#3  0x400849 in __simd2_mod_MOD_work
#4  0x4008D4 in MAIN__ at simd-2.f90:?
Segmentation fault (core dumped)

With/without -march=haswell, -mtune=haswell etc.

	Jakub


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