[PATCH] D49507: [Power9] Add __float128 support in the backend for bitcast to a i128

Thu Oct 4 11:14:02 PDT 2018

stefanp updated this revision to Diff 168330.
stefanp added a comment.

Removed the custom PPCISD node and it simplified the patch considerably.

Added conditions to handle bitconverts from f128 to a number of vector sizes (v2i64 down to v16i8). 
Did not add the code for the bitconvert from the vector sizes to f128 because I have not been able to find an example to trigger the condition. It seems that the f128 is lowered into a store followed by a load.

https://reviews.llvm.org/D49507

Files:
  lib/Target/PowerPC/PPCISelLowering.cpp
  lib/Target/PowerPC/PPCISelLowering.h
  lib/Target/PowerPC/PPCInstrVSX.td
  test/CodeGen/PowerPC/f128-bitcast.ll

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