[Clang][PowerPC] Support constraint 'wi' in asm   From the gcc manual, we can see that the specific limit of wi inline asm is “FP or VSX register to hold 64-bit integers for VSX insns or NO_REGS”. The link is https://gcc.gnu.org/onlinedocs/gcc-8.2.0/gcc/Machine-Constraints.html#Machine-Constraints. We should accept this constraint.
[Clang][PowerPC] Support constraint 'wi' in asm
  From the gcc manual, we can see that the specific limit of wi inline asm is “FP or VSX register to hold 64-bit integers for VSX insns or NO_REGS”. The link is https://gcc.gnu.org/onlinedocs/gcc-8.2.0/gcc/Machine-Constraints.html#Machine-Constraints. We should accept this constraint.

Reviewed By: jsji

Differential Revision: https://reviews.llvm.org/D53265


git-svn-id: ffe668792ed300d6c2daa1f6eba2e0aa28d7ec6c@345809 91177308-0d34-0410-b5e6-96231b3b80d8

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