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This adds support for the basic mnemoics (with the L operand) for the fixed-point compare instructions. These are defined as aliases for the already existing CMPW/CMPD patterns, depending on the value of L. This requires use of InstAlias patterns with immediate literal operands. To make this work, we need two further changes: - define a RegisterPrefix, because otherwise literals 0 and 1 would be parsed as literal register names - provide a PPCAsmParser::validateTargetOperandClass routine to recognize immediate literals (like ARM does) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185826 91177308-0d34-0410-b5e6-96231b3b80d8
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