[PATCH] D146059: [SystemZ] Allow fp/int casting into inline assembly operands

[Jonas Paulsson via Phabricator via llvm-commits]

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Allow bitcasting of fp/vec values into inline assembly 'r' operands, int/vec operands into 'f' operands, and int/fp operands into 'v' operands. This now matches GCCs behavior.

For the 'f' constraint, I changed the register class assigned for 128-bit to depend on the vector facility (using getRegClassFor()). This was needed to match GCCs behavior, but I am now a little surprised that this was always FP128BitRegClass..?

The casting between i128 and f128 required some extra work as i128 is untyped.


https://reviews.llvm.org/D146059

Files:
  llvm/lib/Target/SystemZ/SystemZISelLowering.cpp
  llvm/test/CodeGen/SystemZ/inline-asm-fp-int-casting.ll

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