[PATCH] D15213: [SimplifyCFG] allow speculation of exactly one expensive instruction (PR24818)

[Sanjay Patel via llvm-commits]

spatel updated this revision to Diff 42778.
spatel marked an inline comment as done.
spatel added a comment.

Patch updated based on James' feedback:

1. Fixed check to use !empty() rather than size().
2. Fixed check to specify 'Depth > 0' since it's an integer.
3. Added cl::opt override to disable this.


http://reviews.llvm.org/D15213

Files:
  lib/Transforms/Utils/SimplifyCFG.cpp
  test/Transforms/SimplifyCFG/X86/speculate-cttz-ctlz.ll
  test/Transforms/SimplifyCFG/speculate-math.ll

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