Make llvm.eh.actions an intrinsic and add docs for it

[oota-llvm.git] / lib / Analysis / AliasAnalysis.cpp

diff --git a/lib/Analysis/AliasAnalysis.cpp b/lib/Analysis/AliasAnalysis.cpp
index e02d6058260829f8fb0a7019cbe0197fe875b70b..0b0fd50a866f5611ff9eba85fd271674907fe838 100644 (file)
--- a/lib/Analysis/AliasAnalysis.cpp
+++ b/lib/Analysis/AliasAnalysis.cpp
@@ -27,6 +27,7 @@
 #include "llvm/Analysis/AliasAnalysis.h"
 #include "llvm/Analysis/CFG.h"
 #include "llvm/Analysis/CaptureTracking.h"
+#include "llvm/Analysis/TargetLibraryInfo.h"
 #include "llvm/Analysis/ValueTracking.h"
 #include "llvm/IR/BasicBlock.h"
 #include "llvm/IR/DataLayout.h"
@@ -37,7 +38,6 @@
 #include "llvm/IR/LLVMContext.h"
 #include "llvm/IR/Type.h"
 #include "llvm/Pass.h"
-#include "llvm/Target/TargetLibraryInfo.h"
 using namespace llvm;
 
 // Register the AliasAnalysis interface, providing a nice name to refer to.
@@ -196,12 +196,11 @@ AliasAnalysis::getModRefInfo(ImmutableCallSite CS1, ImmutableCallSite CS2) {
         if (!Arg->getType()->isPointerTy())
           continue;
         ModRefResult ArgMask;
-        Location CS1Loc =
-          getArgLocation(CS1, (unsigned) std::distance(CS1.arg_begin(), I),
-                         ArgMask);
-       // ArgMask indicates what CS1 might do to CS1Loc; if CS1 might Mod
-       // CS1Loc, then we care about either a Mod or a Ref by CS2. If CS1
-       // might Ref, then we care only about a Mod by CS2.
+        Location CS1Loc = getArgLocation(
+            CS1, (unsigned)std::distance(CS1.arg_begin(), I), ArgMask);
+        // ArgMask indicates what CS1 might do to CS1Loc; if CS1 might Mod
+        // CS1Loc, then we care about either a Mod or a Ref by CS2. If CS1
+        // might Ref, then we care only about a Mod by CS2.
         ModRefResult ArgR = getModRefInfo(CS2, CS1Loc);
         if (((ArgMask & Mod) != NoModRef && (ArgR & ModRef) != NoModRef) ||
             ((ArgMask & Ref) != NoModRef && (ArgR & Mod)    != NoModRef))
@@ -293,7 +292,7 @@ AliasAnalysis::getLocation(const AtomicRMWInst *RMWI) {
                   getTypeStoreSize(RMWI->getValOperand()->getType()), AATags);
 }
 
-AliasAnalysis::Location 
+AliasAnalysis::Location
 AliasAnalysis::getLocationForSource(const MemTransferInst *MTI) {
   uint64_t Size = UnknownSize;
   if (ConstantInt *C = dyn_cast<ConstantInt>(MTI->getLength()))
@@ -303,11 +302,11 @@ AliasAnalysis::getLocationForSource(const MemTransferInst *MTI) {
   // to both the source and the destination.
   AAMDNodes AATags;
   MTI->getAAMetadata(AATags);
-  
+
   return Location(MTI->getRawSource(), Size, AATags);
 }
 
-AliasAnalysis::Location 
+AliasAnalysis::Location
 AliasAnalysis::getLocationForDest(const MemIntrinsic *MTI) {
   uint64_t Size = UnknownSize;
   if (ConstantInt *C = dyn_cast<ConstantInt>(MTI->getLength()))
@@ -317,7 +316,7 @@ AliasAnalysis::getLocationForDest(const MemIntrinsic *MTI) {
   // to both the source and the destination.
   AAMDNodes AATags;
   MTI->getAAMetadata(AATags);
- 
+
   return Location(MTI->getRawDest(), Size, AATags);
 }
 
@@ -408,9 +407,10 @@ AliasAnalysis::ModRefResult
 AliasAnalysis::callCapturesBefore(const Instruction *I,
                                   const AliasAnalysis::Location &MemLoc,
                                   DominatorTree *DT) {
-  if (!DT || !DL) return AliasAnalysis::ModRef;
+  if (!DT)
+    return AliasAnalysis::ModRef;
 
-  const Value *Object = GetUnderlyingObject(MemLoc.Ptr, DL);
+  const Value *Object = GetUnderlyingObject(MemLoc.Ptr, *DL);
   if (!isIdentifiedObject(Object) || isa<GlobalValue>(Object) ||
       isa<Constant>(Object))
     return AliasAnalysis::ModRef;
@@ -440,7 +440,7 @@ AliasAnalysis::callCapturesBefore(const Instruction *I,
     // assume that the call could touch the pointer, even though it doesn't
     // escape.
     if (isNoAlias(AliasAnalysis::Location(*CI),
-                 AliasAnalysis::Location(Object)))
+                  AliasAnalysis::Location(Object)))
       continue;
     if (CS.doesNotAccessMemory(ArgNo))
       continue;
@@ -463,10 +463,10 @@ AliasAnalysis::~AliasAnalysis() {}
 /// InitializeAliasAnalysis - Subclasses must call this method to initialize the
 /// AliasAnalysis interface before any other methods are called.
 ///
-void AliasAnalysis::InitializeAliasAnalysis(Pass *P) {
-  DataLayoutPass *DLP = P->getAnalysisIfAvailable<DataLayoutPass>();
-  DL = DLP ? &DLP->getDataLayout() : nullptr;
-  TLI = P->getAnalysisIfAvailable<TargetLibraryInfo>();
+void AliasAnalysis::InitializeAliasAnalysis(Pass *P, const DataLayout *NewDL) {
+  DL = NewDL;
+  auto *TLIP = P->getAnalysisIfAvailable<TargetLibraryInfoWrapperPass>();
+  TLI = TLIP ? &TLIP->getTLI() : nullptr;
   AA = &P->getAnalysis<AliasAnalysis>();
 }
 
@@ -484,21 +484,22 @@ uint64_t AliasAnalysis::getTypeStoreSize(Type *Ty) {
 }
 
 /// canBasicBlockModify - Return true if it is possible for execution of the
-/// specified basic block to modify the value pointed to by Ptr.
+/// specified basic block to modify the location Loc.
 ///
 bool AliasAnalysis::canBasicBlockModify(const BasicBlock &BB,
                                         const Location &Loc) {
-  return canInstructionRangeModify(BB.front(), BB.back(), Loc);
+  return canInstructionRangeModRef(BB.front(), BB.back(), Loc, Mod);
 }
 
-/// canInstructionRangeModify - Return true if it is possible for the execution
-/// of the specified instructions to modify the value pointed to by Ptr.  The
-/// instructions to consider are all of the instructions in the range of [I1,I2]
-/// INCLUSIVE.  I1 and I2 must be in the same basic block.
-///
-bool AliasAnalysis::canInstructionRangeModify(const Instruction &I1,
+/// canInstructionRangeModRef - Return true if it is possible for the
+/// execution of the specified instructions to mod\ref (according to the
+/// mode) the location Loc. The instructions to consider are all
+/// of the instructions in the range of [I1,I2] INCLUSIVE.
+/// I1 and I2 must be in the same basic block.  
+bool AliasAnalysis::canInstructionRangeModRef(const Instruction &I1,
                                               const Instruction &I2,
-                                              const Location &Loc) {
+                                              const Location &Loc,
+                                              const ModRefResult Mode) {
   assert(I1.getParent() == I2.getParent() &&
          "Instructions not in same basic block!");
   BasicBlock::const_iterator I = &I1;
@@ -506,7 +507,7 @@ bool AliasAnalysis::canInstructionRangeModify(const Instruction &I1,
   ++E;  // Convert from inclusive to exclusive range.
 
   for (; I != E; ++I) // Check every instruction in range
-    if (getModRefInfo(I, Loc) & Mod)
+    if (getModRefInfo(I, Loc) & Mode)
       return true;
   return false;
 }
@@ -557,4 +558,3 @@ bool llvm::isIdentifiedFunctionLocal(const Value *V)
 {
   return isa<AllocaInst>(V) || isNoAliasCall(V) || isNoAliasArgument(V);
 }
-