Updating SVN tree U gcc/doc/extend.texi U gcc/doc/invoke.texi U gcc/cgraph.c U gcc/cgraph.h U gcc/DATESTAMP U gcc/ChangeLog U gcc/go/gofrontend/import.cc U gcc/go/gofrontend/MERGE U gcc/lto/lang.opt U gcc/lto/lto-dump.c U gcc/lto/ChangeLog U gcc/symtab.c U gcc/config/riscv/riscv.opt U gcc/config/riscv/riscv-opts.h U gcc/config/riscv/riscv.c U gcc/config/riscv/riscv.h Updated to revision 273715. Adjusting file timestamps