One year and one month passed from the time when the last major version of the GNU Compiler Collection has been announced, so it is the time again to announce a new major GCC release, 4.9.0. GCC 4.9.0 is a major release containing substantial new functionality not available in GCC 4.8.x or previous GCC releases. The Local Register Allocator, introduced in GCC 4.8.0 for ia32 and x86-64 targets only, is now used also on the Aarch64, ARM, S/390 and ARC targets by default and on PowerPC and RX targets optionally. There have been substantial improvements to C++ devirtualization and various scalability bottlenecks in the interprocedural optimizations and LTO have been fixed. Support for various C++14 additions have been added to the C++ Front End, on the standard C++ library side the most important addition is support for the C++11 <regex>. GCC 4.9.0 supports the OpenMP 4.0 standard for C and C++, and a partial implementation of the Cilk Plus extension for data and task parallelism. Various kinds of undefined behaviors in programs can be now diagnosed at runtime through Undefined Behavior Sanitizer. Support for the new little-endian powerpc64le-linux platform has been added, which defaults to the new PowerPC ELFV2 ABI. On x86-64 and ia32, support for the AVX-512 instruction set has been implemented. see: http://gcc.gnu.org/ml/gcc/2014-04/msg00195.html Reproducible: Always
*** This bug has been marked as a duplicate of bug 508418 ***
