Simon Dardis 8e2c689fe9 [mips] Fix sync instruction definition
The 'sync' instruction for MIPS was defined in MIPS-II as taking no operands.
MIPS32 extended the define of 'sync' as taking an optional unsigned 5 bit
immediate.

This patch correct the definition of sync so that it is accepted with an
operand of 0 or no operand for MIPS-II to MIPS-V, and a 5 bit unsigned
immediate for MIPS32 and later revisions.

Additionally a clear error is given when the MIPS32 version of sync is
used when targeting pre MIPS32.

This partially resolves PR/30714.

Thanks to Daniel Sanders for reporting this issue!

Reveiwers: vkalintiris

Differential Revision: https://reviews.llvm.org/D25672


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@284483 91177308-0d34-0410-b5e6-96231b3b80d8
2016-10-18 14:42:13 +00:00
..
2016-10-18 14:42:13 +00:00