This feature tracker depends on: Bug 633361 - [6.1 FEAT] 64 bit register support in 31 bit emulation - GCC Bug 633377 - [6.1 FEAT] 64 bit register support in 31 bit emulation - Binutils Bug 633586 - [6.1 FEAT] 64 bit register support in 31 bit emulation - GCC-specfile part
After evaluating this issue, there are no plans to address it further or fix it in an upcoming release. Therefore, it is being closed. If plans change such that this issue will be fixed in an upcoming release, then the bug can be reopened.