[PATCH] D29268: [DAGCombine] Combine composition of ADDC(ADDE)

[Zvi Rackover via Phabricator via llvm-commits]

zvi created this revision.

fold  (addc X, (adde Y, 0, Carry)) -> (adde X, Y, Carry)

One step towards improving pr31719


Repository:
  rL LLVM

https://reviews.llvm.org/D29268

Files:
  lib/CodeGen/SelectionDAG/DAGCombiner.cpp
  test/CodeGen/X86/adde-carry.ll
  test/CodeGen/X86/mul-i1024.ll
  test/CodeGen/X86/mul-i512.ll

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