GitHub (Feb 28 2020 at 23:26): GitHub (Feb 28 2020 at 23:26):alexcrichton transferred Issue #1101 (assigned to sstangl):
Variable-length encodings (introduced to support the proper machine code for loads/stores which memory operand is in a given register on x86) could allow removing the need to have both the REX vs non-REX encodings.
This would have a few benefits:
- reduce the number of encodings in the legalizer interpreter, making it faster
- allow some encodings to accept REX registers, when they couldn't before (at least regmove is affected by this issue)
- reduce the number of methods in PerCpuModeEncodings
Last updated: Dec 23 2024 at 14:03 UTC