[CFLAA] Move a common function to the header to reduce duplication.

Differential Revision:  https://reviews.llvm.org/D34660

llvm-svn: 306354

3 files changed, 17 insertions, 24 deletions

diff --git a/llvm/include/llvm/Analysis/CFLAliasAnalysisUtils.h b/llvm/include/llvm/Analysis/CFLAliasAnalysisUtils.h
index 411626438c7..e21817852e6 100644
--- a/llvm/include/llvm/Analysis/CFLAliasAnalysisUtils.h
+++ b/llvm/include/llvm/Analysis/CFLAliasAnalysisUtils.h
@@ -41,4 +41,19 @@ private:
   }
 };
 
+namespace llvm {
+namespace cflaa {
+static inline const Function *parentFunctionOfValue(const Value *Val) {
+  if (auto *Inst = dyn_cast<Instruction>(Val)) {
+    auto *Bb = Inst->getParent();
+    return Bb->getParent();
+  }
+
+  if (auto *Arg = dyn_cast<Argument>(Val))
+    return Arg->getParent();
+  return nullptr;
+} // namespace cflaa
+} // namespace llvm
+}
+
 #endif // LLVM_ANALYSIS_CFLALIASANALYSISUTILS_H
diff --git a/llvm/lib/Analysis/CFLAndersAliasAnalysis.cpp b/llvm/lib/Analysis/CFLAndersAliasAnalysis.cpp
index 63be165953b..0de7ad98af4 100644
--- a/llvm/lib/Analysis/CFLAndersAliasAnalysis.cpp
+++ b/llvm/lib/Analysis/CFLAndersAliasAnalysis.cpp
@@ -68,17 +68,6 @@ CFLAndersAAResult::CFLAndersAAResult(CFLAndersAAResult &&RHS)
     : AAResultBase(std::move(RHS)), TLI(RHS.TLI) {}
 CFLAndersAAResult::~CFLAndersAAResult() {}
 
-static const Function *parentFunctionOfValue(const Value *Val) {
-  if (auto *Inst = dyn_cast<Instruction>(Val)) {
-    auto *Bb = Inst->getParent();
-    return Bb->getParent();
-  }
-
-  if (auto *Arg = dyn_cast<Argument>(Val))
-    return Arg->getParent();
-  return nullptr;
-}
-
 namespace {
 
 enum class MatchState : uint8_t {
diff --git a/llvm/lib/Analysis/CFLSteensAliasAnalysis.cpp b/llvm/lib/Analysis/CFLSteensAliasAnalysis.cpp
index 33154ee9588..a87cf458a84 100644
--- a/llvm/lib/Analysis/CFLSteensAliasAnalysis.cpp
+++ b/llvm/lib/Analysis/CFLSteensAliasAnalysis.cpp
@@ -90,17 +90,6 @@ const StratifiedIndex StratifiedLink::SetSentinel =
 /// Determines whether it would be pointless to add the given Value to our sets.
 static bool canSkipAddingToSets(Value *Val);
 
-static Function *parentFunctionOfValue(Value *Val) {
-  if (auto *Inst = dyn_cast<Instruction>(Val)) {
-    auto *Bb = Inst->getParent();
-    return Bb->getParent();
-  }
-
-  if (auto *Arg = dyn_cast<Argument>(Val))
-    return Arg->getParent();
-  return nullptr;
-}
-
 static bool canSkipAddingToSets(Value *Val) {
   // Constants can share instances, which may falsely unify multiple
   // sets, e.g. in
@@ -281,8 +270,8 @@ AliasResult CFLSteensAAResult::query(const MemoryLocation &LocA,
     return NoAlias;
 
   Function *Fn = nullptr;
-  Function *MaybeFnA = parentFunctionOfValue(ValA);
-  Function *MaybeFnB = parentFunctionOfValue(ValB);
+  Function *MaybeFnA = const_cast<Function *>(parentFunctionOfValue(ValA));
+  Function *MaybeFnB = const_cast<Function *>(parentFunctionOfValue(ValB));
   if (!MaybeFnA && !MaybeFnB) {
     // The only times this is known to happen are when globals + InlineAsm are
     // involved