[llvm] r306193 - Make visible isDereferenceableAndAlignedPointer(..., const APInt &Size, ...)

[Vitaly Buka via llvm-commits]

Author: vitalybuka
Date: Fri Jun 23 20:35:13 2017
New Revision: 306193

URL: http://llvm.org/viewvc/llvm-project?rev=306193&view=rev
Log:
Make visible isDereferenceableAndAlignedPointer(..., const APInt &Size, ...)

Summary: Used by D34311 and D34467

Reviewers: hfinkel, efriedma

Subscribers: llvm-commits

Differential Revision: https://reviews.llvm.org/D34585

Modified:
    llvm/trunk/include/llvm/Analysis/Loads.h
    llvm/trunk/lib/Analysis/Loads.cpp

Modified: llvm/trunk/include/llvm/Analysis/Loads.h
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/include/llvm/Analysis/Loads.h?rev=306193&r1=306192&r2=306193&view=diff
==============================================================================
--- llvm/trunk/include/llvm/Analysis/Loads.h (original)
+++ llvm/trunk/include/llvm/Analysis/Loads.h Fri Jun 23 20:35:13 2017
@@ -39,6 +39,15 @@ bool isDereferenceableAndAlignedPointer(
                                         const Instruction *CtxI = nullptr,
                                         const DominatorTree *DT = nullptr);
 
+/// Returns true if V is always dereferenceable for Size byte with alignment
+/// greater or equal than requested. If the context instruction is specified
+/// performs context-sensitive analysis and returns true if the pointer is
+/// dereferenceable at the specified instruction.
+bool isDereferenceableAndAlignedPointer(const Value *V, unsigned Align,
+                                        const APInt &Size, const DataLayout &DL,
+                                        const Instruction *CtxI = nullptr,
+                                        const DominatorTree *DT = nullptr);
+
 /// Return true if we know that executing a load from this value cannot trap.
 ///
 /// If DT and ScanFrom are specified this method performs context-sensitive

Modified: llvm/trunk/lib/Analysis/Loads.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Analysis/Loads.cpp?rev=306193&r1=306192&r2=306193&view=diff
==============================================================================
--- llvm/trunk/lib/Analysis/Loads.cpp (original)
+++ llvm/trunk/lib/Analysis/Loads.cpp Fri Jun 23 20:35:13 2017
@@ -117,6 +117,16 @@ static bool isDereferenceableAndAlignedP
 }
 
 bool llvm::isDereferenceableAndAlignedPointer(const Value *V, unsigned Align,
+                                              const APInt &Size,
+                                              const DataLayout &DL,
+                                              const Instruction *CtxI,
+                                              const DominatorTree *DT) {
+  SmallPtrSet<const Value *, 32> Visited;
+  return ::isDereferenceableAndAlignedPointer(V, Align, Size, DL, CtxI, DT,
+                                              Visited);
+}
+
+bool llvm::isDereferenceableAndAlignedPointer(const Value *V, unsigned Align,
                                               const DataLayout &DL,
                                               const Instruction *CtxI,
                                               const DominatorTree *DT) {