https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70902
Bug ID: 70902
Summary: GCC freezes while compiling for 'skylake-avx512'
target
Product: gcc
Version: 7.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: anton.mitrokhin at phystech dot edu
Target Milestone: ---
Created attachment 38391
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=38391&action=edit
Reproducer
GCC trunk compiler freezes indefinitely while trying to build for
skylake-avx512 target on -O3 and -Ofast.
Reproducer:
> g++ -std=c++11 -Ofast -march=skylake-avx512 -o out crash.cpp
Output:
freezes
Version:
> g++ -v
Using built-in specs.
COLLECT_GCC=g++
COLLECT_LTO_WRAPPER=/export/users/amitrokh/gcc_trunk/bin/../libexec/gcc/x86_64-pc-linux-gnu/7.0.0/lto-wrapper
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=235693/svn-rev:235693/
--prefix=/export/users/gnutester/stability/work/trunk/64/install
--enable-languages=c,c++,fortran,java,lto
Thread model: posix
gcc version 7.0.0 20160501 (experimental) (Revision=235693/svn-rev:235693/)
