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630c5e06d6
Previously we modelled VPR128 and VPR64 as essentially identical register-classes containing V0-V31 (which had Q0-Q31 as "sub_alias" sub-registers). This model is starting to cause significant problems for code generation, particularly writing EXTRACT/INSERT_SUBREG patterns for converting between the two. The change here switches to classifying VPR64 & VPR128 as RegisterOperands, which are essentially aliases for RegisterClasses with different parsing and printing behaviour. This fits almost exactly with their real status (VPR128 == FPR128 printed strangely, VPR64 == FPR64 printed strangely). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@190665 91177308-0d34-0410-b5e6-96231b3b80d8
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