[PATCH] D49966: [X86] Performing DAG pruning before selection of LEA instructions.

[Jatin Bhateja via Phabricator via llvm-commits]

jbhateja created this revision.
Herald added a subscriber: llvm-commits.

Pruning DAG patterns to facilitate expression folding involving SUB instructions
during addressing mode based complex pattern matching.

Fixes Bug 37939 - Missed pattern B+(-C)*A


Repository:
  rL LLVM

https://reviews.llvm.org/D49966

Files:
  lib/Target/X86/X86ISelDAGToDAG.cpp
  test/CodeGen/X86/lea-opt.ll

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