[PATCH] D32093: [InstCombine] PR32078: convert scalar operations to vector.

[Alexey Bataev via Phabricator via llvm-commits]

ABataev created this revision.

If we have a code like:

  %xn = extractelement <2 x i32> %x, i32 %n
  %yn = extractelement <2 x i32> %y, i32 %n
  %cmpn = icmp eq i32 %xn, %yn

we can convert it to something like this:

  %cmp = icmp eq <2 x i32> %x, %y
  %cmpn = extractelement <2 x i1> %cmp0, i32 %n


https://reviews.llvm.org/D32093

Files:
  lib/Transforms/InstCombine/InstCombineAddSub.cpp
  lib/Transforms/InstCombine/InstCombineAndOrXor.cpp
  lib/Transforms/InstCombine/InstCombineCompares.cpp
  lib/Transforms/InstCombine/InstCombineInternal.h
  lib/Transforms/InstCombine/InstCombineMulDivRem.cpp
  lib/Transforms/InstCombine/InstCombinePHI.cpp
  lib/Transforms/InstCombine/InstCombineShifts.cpp
  lib/Transforms/InstCombine/InstructionCombining.cpp
  test/Transforms/InstCombine/bitcast-bigendian.ll
  test/Transforms/InstCombine/bitcast.ll
  test/Transforms/InstCombine/type_pun.ll
  test/Transforms/InstCombine/x86-avx512.ll

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