[PATCH] D10767: Fix shift legalization and lowering for big constants.

[Paweł Bylica]

chfast updated this revision to Diff 29265.
chfast added a comment.

I changed DAGTypeLegalizer::ExpandShiftByConstant to accept APInt as the shift amount.
There is one quirk in that: because there is not operator- for pair (uint64_t, APInt)
I workarounded it with strage looking `-Amt + NVTBits`.


http://reviews.llvm.org/D10767

Files:
  lib/CodeGen/SelectionDAG/LegalizeIntegerTypes.cpp
  lib/CodeGen/SelectionDAG/LegalizeTypes.h
  lib/Target/X86/X86ISelLowering.cpp
  test/CodeGen/X86/legalize-shl-vec.ll

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