[PATCH] D11660: [x86] reassociate integer multiplies using machine combiner pass

[Sanjay Patel]

spatel updated this revision to Diff 31089.
spatel added a comment.

Patch updated based on feedback from Gerolf and Kevin (thanks!):

1. Rename hasVirtualRegDefsInBasicBlock -> hasReassociableOperands  (the function is more general now)
2. Update comment on EFLAGS check to make it clearer (I hope)
3. Add asserts about that 3rd operand which we assume must be EFLAGS


http://reviews.llvm.org/D11660

Files:
  lib/Target/X86/X86InstrInfo.cpp
  test/CodeGen/X86/machine-combiner-int.ll

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