Updating SVN tree U libstdc++-v3/ChangeLog U libstdc++-v3/config/abi/post/x86_64-linux-gnu/x32/baseline_symbols.txt U gcc/DATESTAMP U gcc/ChangeLog A gcc/testsuite/gcc.target/riscv/load-immediate.c U gcc/testsuite/ChangeLog U gcc/go/gofrontend/MERGE U gcc/config/riscv/riscv.md U gcc/config/riscv/riscv-protos.h U gcc/config/riscv/riscv.c U libgo/go/runtime/runtime_mmap_test.go Updated to revision 270621. Adjusting file timestamps