[PATCH] D54719: [Intrinsic] Signed Fixed Point Multiplication Intrinsic

[Leonard Chan via Phabricator via llvm-commits]

leonardchan created this revision.
leonardchan added reviewers: ebevhan, bjope, craig.topper, RKSimon.
Herald added a subscriber: hiraditya.

Add an intrinsic that takes 2 signed integers with the scale of them provided as the third argument and performs fixed point multiplication on them.

This is a part of implementing fixed point arithmetic in clang where some of the more complex operations will be implemented as intrinsics.


Repository:
  rL LLVM

https://reviews.llvm.org/D54719

Files:
  llvm/include/llvm/CodeGen/ISDOpcodes.h
  llvm/include/llvm/CodeGen/TargetLowering.h
  llvm/include/llvm/IR/Intrinsics.td
  llvm/include/llvm/Target/TargetSelectionDAG.td
  llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
  llvm/lib/CodeGen/SelectionDAG/LegalizeIntegerTypes.cpp
  llvm/lib/CodeGen/SelectionDAG/LegalizeTypes.h
  llvm/lib/CodeGen/SelectionDAG/LegalizeVectorOps.cpp
  llvm/lib/CodeGen/SelectionDAG/LegalizeVectorTypes.cpp
  llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
  llvm/lib/CodeGen/SelectionDAG/SelectionDAGDumper.cpp
  llvm/lib/CodeGen/SelectionDAG/TargetLowering.cpp
  llvm/lib/CodeGen/TargetLoweringBase.cpp
  llvm/lib/IR/Verifier.cpp
  llvm/test/CodeGen/X86/smul_fix.ll

-------------- next part --------------
A non-text attachment was scrubbed...
Name: D54719.174669.patch
Type: text/x-patch
Size: 29118 bytes
Desc: not available
URL: <http://lists.llvm.org/pipermail/llvm-commits/attachments/20181119/99592779/attachment.bin>