commit | 4d70a2949007edeaad4662d5cdcb2d272cb2b2ff | [log] [tgz] |
---|---|---|
author | Dan Gohman <gohman@apple.com> | Thu Nov 11 21:23:25 2010 +0000 |
committer | Dan Gohman <gohman@apple.com> | Thu Nov 11 21:23:25 2010 +0000 |
tree | 107a06a85b499d7d22a2535322267b7966c4a9fb | |
parent | 410cb57524e3bfb022df20091ae4a5fa1fa7005d [diff] |
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