diff options
| author | Dan Gohman <dan433584@gmail.com> | 2013-01-31 02:45:26 +0000 |
|---|---|---|
| committer | Dan Gohman <dan433584@gmail.com> | 2013-01-31 02:45:26 +0000 |
| commit | 819f9d6bf91c439967ef623d0c047e7f672683fa (patch) | |
| tree | 8130dc29a595f365616d5acc1101a9fe25559f14 /lib/Analysis | |
| parent | de0eb19248f3053c07a5b1dad9c47b8435458337 (diff) | |
| download | external_llvm-819f9d6bf91c439967ef623d0c047e7f672683fa.zip external_llvm-819f9d6bf91c439967ef623d0c047e7f672683fa.tar.gz external_llvm-819f9d6bf91c439967ef623d0c047e7f672683fa.tar.bz2 | |
Add a comment.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@174028 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Analysis')
| -rw-r--r-- | lib/Analysis/InstructionSimplify.cpp | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/lib/Analysis/InstructionSimplify.cpp b/lib/Analysis/InstructionSimplify.cpp index 9f2aa59..18d90b6 100644 --- a/lib/Analysis/InstructionSimplify.cpp +++ b/lib/Analysis/InstructionSimplify.cpp @@ -663,6 +663,10 @@ Value *llvm::SimplifyAddInst(Value *Op0, Value *Op1, bool isNSW, bool isNUW, /// accumulates the total constant offset applied in the returned constant. It /// returns 0 if V is not a pointer, and returns the constant '0' if there are /// no constant offsets applied. +/// +/// This is very similar to GetPointerBaseWithConstantOffset except it doesn't +/// follow non-inbounds geps. This allows it to remain usable for icmp ult/etc. +/// folding. static Constant *stripAndComputeConstantOffsets(const DataLayout &TD, Value *&V) { assert(V->getType()->isPointerTy()); |