https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68956
Bug ID: 68956
Summary: [6 regression] Vectorizer miscompilation of 416.gamess
Product: gcc
Version: 6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: ienkovich at gcc dot gnu.org
Target Milestone: ---
Created attachment 37061
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=37061&action=edit
Reproducer
Here is a test reduced from 416.gamess which fails when vectorizer is enabled.
>gfortran -ffast-math -mfpmath=sse -O2 -march=core-avx2 -m32 test.f -o test
>./test
>gfortran -ffast-math -mfpmath=sse -O2 -march=core-avx2 -m32 test.f
>-ftree-vectorize -o test
>./test
Program aborted. Backtrace:
#0 0xF76B4E63
#1 0xF76B6820
#2 0xF777AB78
#3 0x80489A7 in MAIN__ at test.f:?
Aborted (core dumped)
Used compiler:
Target: x86_64-pc-linux-gnu
Configured with: /export/users/gnutester/stability/svn/trunk/configure
--with-arch=corei7 --with-cpu=corei7 --enable-clocale=gnu --with-system-zlib
--enable-shared --with-demangler-in-ld --enable-cloog-backend=isl
--with-fpmath=sse --with-pkgversion=Revision=231720
--prefix=/export/users/gnutester/stability/work/trunk/64/install
--enable-languages=c,c++,fortran,java,lto
Thread model: posix
gcc version 6.0.0 20151216 (experimental) (Revision=231720)
