Dan Gohman 4d70a29490 Factor out Instruction::isSafeToSpeculativelyExecute's code for ...

testing for dereferenceable pointers into a helper function,
isDereferenceablePointer.  Teach it how to reason about GEPs
with simple non-zero indices.

Also eliminate ArgumentPromtion's IsAlwaysValidPointer,
which didn't check for weak externals or out of range gep
indices.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118840 91177308-0d34-0410-b5e6-96231b3b80d8

2010-11-11 21:23:25 +00:00

2.6 KiB

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