[PATCH] D119019: [ADT] Add APInt/MathExtras isShiftedMask variant returning mask offset/length

[Simon Pilgrim via Phabricator via llvm-commits]

RKSimon created this revision.
RKSimon added reviewers: spatel, lebedev.ri, nikic, dmgreen, foad.
Herald added subscribers: dexonsmith, ecnelises, kerbowa, pengfei, atanasyan, jrtc27, hiraditya, nhaehnle, jvesely, sdardis, arsenm.
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In many cases, calls to isShiftedMask are immediately followed with checks to determine the size and position of the bitmask.

This patch adds variants of APInt::isShiftedMask, isShiftedMask_32 and isShiftedMask_64 that return these values as additional arguments.

I've updated a number of cases that were either performing seperate size/position calculations or had created their own local wrapper versions of these.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D119019

Files:
  llvm/include/llvm/ADT/APInt.h
  llvm/include/llvm/Support/MathExtras.h
  llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
  llvm/lib/Target/AMDGPU/AMDGPUISelLowering.cpp
  llvm/lib/Target/Mips/MipsISelLowering.cpp
  llvm/lib/Target/X86/X86InstCombineIntrinsic.cpp
  llvm/unittests/ADT/APIntTest.cpp
  llvm/unittests/Support/MathExtrasTest.cpp

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