Update llvm to trunk r256945.

7 files changed, 54 insertions, 65 deletions

diff --git a/contrib/llvm/lib/IR/AsmWriter.cpp b/contrib/llvm/lib/IR/AsmWriter.cpp
index 185db47..1ebe9b7 100644
--- a/contrib/llvm/lib/IR/AsmWriter.cpp
+++ b/contrib/llvm/lib/IR/AsmWriter.cpp
@@ -2060,7 +2060,7 @@ private:
 
   // printGCRelocateComment - print comment after call to the gc.relocate
   // intrinsic indicating base and derived pointer names.
-  void printGCRelocateComment(const Value &V);
+  void printGCRelocateComment(const GCRelocateInst &Relocate);
 };
 } // namespace
 
@@ -2722,14 +2722,11 @@ void AssemblyWriter::printInstructionLine(const Instruction &I) {
 
 /// printGCRelocateComment - print comment after call to the gc.relocate
 /// intrinsic indicating base and derived pointer names.
-void AssemblyWriter::printGCRelocateComment(const Value &V) {
-  assert(isGCRelocate(&V));
-  GCRelocateOperands GCOps(cast<Instruction>(&V));
-
+void AssemblyWriter::printGCRelocateComment(const GCRelocateInst &Relocate) {
   Out << " ; (";
-  writeOperand(GCOps.getBasePtr(), false);
+  writeOperand(Relocate.getBasePtr(), false);
   Out << ", ";
-  writeOperand(GCOps.getDerivedPtr(), false);
+  writeOperand(Relocate.getDerivedPtr(), false);
   Out << ")";
 }
 
@@ -2737,8 +2734,8 @@ void AssemblyWriter::printGCRelocateComment(const Value &V) {
 /// which slot it occupies.
 ///
 void AssemblyWriter::printInfoComment(const Value &V) {
-  if (isGCRelocate(&V))
-    printGCRelocateComment(V);
+  if (const auto *Relocate = dyn_cast<GCRelocateInst>(&V))
+    printGCRelocateComment(*Relocate);
 
   if (AnnotationWriter)
     AnnotationWriter->printInfoComment(V, Out);
diff --git a/contrib/llvm/lib/IR/Attributes.cpp b/contrib/llvm/lib/IR/Attributes.cpp
index bcf7dc3..6c01bb6 100644
--- a/contrib/llvm/lib/IR/Attributes.cpp
+++ b/contrib/llvm/lib/IR/Attributes.cpp
@@ -641,14 +641,15 @@ AttributeSet AttributeSet::get(LLVMContext &C,
   if (Attrs.empty())
     return AttributeSet();
 
-#ifndef NDEBUG
-  for (unsigned i = 0, e = Attrs.size(); i != e; ++i) {
-    assert((!i || Attrs[i-1].first <= Attrs[i].first) &&
-           "Misordered Attributes list!");
-    assert(!Attrs[i].second.hasAttribute(Attribute::None) &&
-           "Pointless attribute!");
-  }
-#endif
+  assert(std::is_sorted(Attrs.begin(), Attrs.end(),
+                        [](const std::pair<unsigned, Attribute> &LHS,
+                           const std::pair<unsigned, Attribute> &RHS) {
+                          return LHS.first < RHS.first;
+                        }) && "Misordered Attributes list!");
+  assert(std::none_of(Attrs.begin(), Attrs.end(),
+                      [](const std::pair<unsigned, Attribute> &Pair) {
+                        return Pair.second.hasAttribute(Attribute::None);
+                      }) && "Pointless attribute!");
 
   // Create a vector if (unsigned, AttributeSetNode*) pairs from the attributes
   // list.
diff --git a/contrib/llvm/lib/IR/Instruction.cpp b/contrib/llvm/lib/IR/Instruction.cpp
index a0bd2c9..4b33d2e 100644
--- a/contrib/llvm/lib/IR/Instruction.cpp
+++ b/contrib/llvm/lib/IR/Instruction.cpp
@@ -76,22 +76,21 @@ iplist<Instruction>::iterator Instruction::eraseFromParent() {
   return getParent()->getInstList().erase(getIterator());
 }
 
-/// insertBefore - Insert an unlinked instructions into a basic block
-/// immediately before the specified instruction.
+/// Insert an unlinked instruction into a basic block immediately before the
+/// specified instruction.
 void Instruction::insertBefore(Instruction *InsertPos) {
   InsertPos->getParent()->getInstList().insert(InsertPos->getIterator(), this);
 }
 
-/// insertAfter - Insert an unlinked instructions into a basic block
-/// immediately after the specified instruction.
+/// Insert an unlinked instruction into a basic block immediately after the
+/// specified instruction.
 void Instruction::insertAfter(Instruction *InsertPos) {
   InsertPos->getParent()->getInstList().insertAfter(InsertPos->getIterator(),
                                                     this);
 }
 
-/// moveBefore - Unlink this instruction from its current basic block and
-/// insert it into the basic block that MovePos lives in, right before
-/// MovePos.
+/// Unlink this instruction from its current basic block and insert it into the
+/// basic block that MovePos lives in, right before MovePos.
 void Instruction::moveBefore(Instruction *MovePos) {
   MovePos->getParent()->getInstList().splice(
       MovePos->getIterator(), getParent()->getInstList(), getIterator());
diff --git a/contrib/llvm/lib/IR/Instructions.cpp b/contrib/llvm/lib/IR/Instructions.cpp
index 4ae2fd5..7c64ca7 100644
--- a/contrib/llvm/lib/IR/Instructions.cpp
+++ b/contrib/llvm/lib/IR/Instructions.cpp
@@ -609,20 +609,6 @@ void InvokeInst::setSuccessorV(unsigned idx, BasicBlock *B) {
   return setSuccessor(idx, B);
 }
 
-bool InvokeInst::hasFnAttrImpl(Attribute::AttrKind A) const {
-  if (AttributeList.hasAttribute(AttributeSet::FunctionIndex, A))
-    return true;
-
-  // Operand bundles override attributes on the called function, but don't
-  // override attributes directly present on the invoke instruction.
-  if (isFnAttrDisallowedByOpBundle(A))
-    return false;
-
-  if (const Function *F = getCalledFunction())
-    return F->getAttributes().hasAttribute(AttributeSet::FunctionIndex, A);
-  return false;
-}
-
 bool InvokeInst::paramHasAttr(unsigned i, Attribute::AttrKind A) const {
   assert(i < (getNumArgOperands() + 1) && "Param index out of bounds!");
 
@@ -934,6 +920,17 @@ void CatchSwitchInst::addHandler(BasicBlock *Handler) {
   getOperandList()[OpNo] = Handler;
 }
 
+void CatchSwitchInst::removeHandler(handler_iterator HI) {
+  // Move all subsequent handlers up one.
+  Use *EndDst = op_end() - 1;
+  for (Use *CurDst = HI.getCurrent(); CurDst != EndDst; ++CurDst)
+    *CurDst = *(CurDst + 1);
+  // Null out the last handler use.
+  *EndDst = nullptr;
+
+  setNumHungOffUseOperands(getNumOperands() - 1);
+}
+
 BasicBlock *CatchSwitchInst::getSuccessorV(unsigned idx) const {
   return getSuccessor(idx);
 }
diff --git a/contrib/llvm/lib/IR/Metadata.cpp b/contrib/llvm/lib/IR/Metadata.cpp
index ab1ba5e..d8eaceb 100644
--- a/contrib/llvm/lib/IR/Metadata.cpp
+++ b/contrib/llvm/lib/IR/Metadata.cpp
@@ -190,6 +190,8 @@ void ReplaceableMetadataImpl::moveRef(void *Ref, void *New,
 void ReplaceableMetadataImpl::replaceAllUsesWith(Metadata *MD) {
   assert(!(MD && isa<MDNode>(MD) && cast<MDNode>(MD)->isTemporary()) &&
          "Expected non-temp node");
+  assert(CanReplace &&
+         "Attempted to replace Metadata marked for no replacement");
 
   if (UseMap.empty())
     return;
@@ -555,7 +557,7 @@ void MDNode::decrementUnresolvedOperandCount() {
     resolve();
 }
 
-void MDNode::resolveCycles(bool MDMaterialized) {
+void MDNode::resolveCycles(bool AllowTemps) {
   if (isResolved())
     return;
 
@@ -568,7 +570,7 @@ void MDNode::resolveCycles(bool MDMaterialized) {
     if (!N)
       continue;
 
-    if (N->isTemporary() && !MDMaterialized)
+    if (N->isTemporary() && AllowTemps)
       continue;
     assert(!N->isTemporary() &&
            "Expected all forward declarations to be resolved");
diff --git a/contrib/llvm/lib/IR/Statepoint.cpp b/contrib/llvm/lib/IR/Statepoint.cpp
index d45c188..27a990e 100644
--- a/contrib/llvm/lib/IR/Statepoint.cpp
+++ b/contrib/llvm/lib/IR/Statepoint.cpp
@@ -40,20 +40,7 @@ bool llvm::isStatepoint(const Value &inst) {
 }
 
 bool llvm::isGCRelocate(const ImmutableCallSite &CS) {
-  if (!CS.getInstruction()) {
-    // This is not a call site
-    return false;
-  }
-
-  return isGCRelocate(CS.getInstruction());
-}
-bool llvm::isGCRelocate(const Value *inst) {
-  if (const CallInst *call = dyn_cast<CallInst>(inst)) {
-    if (const Function *F = call->getCalledFunction()) {
-      return F->getIntrinsicID() == Intrinsic::experimental_gc_relocate;
-    }
-  }
-  return false;
+  return CS.getInstruction() && isa<GCRelocateInst>(CS.getInstruction());
 }
 
 bool llvm::isGCResult(const ImmutableCallSite &CS) {
diff --git a/contrib/llvm/lib/IR/Verifier.cpp b/contrib/llvm/lib/IR/Verifier.cpp
index 81c87e4..6dfb05d 100644
--- a/contrib/llvm/lib/IR/Verifier.cpp
+++ b/contrib/llvm/lib/IR/Verifier.cpp
@@ -1657,14 +1657,14 @@ void Verifier::VerifyStatepoint(ImmutableCallSite CS) {
     const CallInst *Call = dyn_cast<const CallInst>(U);
     Assert(Call, "illegal use of statepoint token", &CI, U);
     if (!Call) continue;
-    Assert(isGCRelocate(Call) || isGCResult(Call),
+    Assert(isa<GCRelocateInst>(Call) || isGCResult(Call),
            "gc.result or gc.relocate are the only value uses"
            "of a gc.statepoint",
            &CI, U);
     if (isGCResult(Call)) {
       Assert(Call->getArgOperand(0) == &CI,
              "gc.result connected to wrong gc.statepoint", &CI, Call);
-    } else if (isGCRelocate(Call)) {
+    } else if (isa<GCRelocateInst>(Call)) {
       Assert(Call->getArgOperand(0) == &CI,
              "gc.relocate connected to wrong gc.statepoint", &CI, Call);
     }
@@ -3019,8 +3019,7 @@ void Verifier::visitCleanupPadInst(CleanupPadInst &CPI) {
          &CPI);
 
   auto *ParentPad = CPI.getParentPad();
-  Assert(isa<CatchSwitchInst>(ParentPad) || isa<ConstantTokenNone>(ParentPad) ||
-             isa<CleanupPadInst>(ParentPad) || isa<CatchPadInst>(ParentPad),
+  Assert(isa<ConstantTokenNone>(ParentPad) || isa<FuncletPadInst>(ParentPad),
          "CleanupPadInst has an invalid parent.", &CPI);
 
   User *FirstUser = nullptr;
@@ -3077,10 +3076,17 @@ void Verifier::visitCatchSwitchInst(CatchSwitchInst &CatchSwitch) {
   }
 
   auto *ParentPad = CatchSwitch.getParentPad();
-  Assert(isa<CatchSwitchInst>(ParentPad) || isa<ConstantTokenNone>(ParentPad) ||
-             isa<CleanupPadInst>(ParentPad) || isa<CatchPadInst>(ParentPad),
+  Assert(isa<ConstantTokenNone>(ParentPad) || isa<FuncletPadInst>(ParentPad),
          "CatchSwitchInst has an invalid parent.", ParentPad);
 
+  Assert(CatchSwitch.getNumHandlers() != 0,
+         "CatchSwitchInst cannot have empty handler list", &CatchSwitch);
+
+  for (BasicBlock *Handler : CatchSwitch.handlers()) {
+    Assert(isa<CatchPadInst>(Handler->getFirstNonPHI()),
+           "CatchSwitchInst handlers must be catchpads", &CatchSwitch, Handler);
+  }
+
   visitTerminatorInst(CatchSwitch);
 }
 
@@ -3675,8 +3681,8 @@ void Verifier::visitIntrinsicCallSite(Intrinsic::ID ID, CallSite CS) {
 
     // Verify rest of the relocate arguments
 
-    GCRelocateOperands Ops(CS);
-    ImmutableCallSite StatepointCS(Ops.getStatepoint());
+    ImmutableCallSite StatepointCS(
+        cast<GCRelocateInst>(*CS.getInstruction()).getStatepoint());
 
     // Both the base and derived must be piped through the safepoint
     Value* Base = CS.getArgOperand(1);
@@ -3731,14 +3737,14 @@ void Verifier::visitIntrinsicCallSite(Intrinsic::ID ID, CallSite CS) {
     // Relocated value must be a pointer type, but gc_relocate does not need to return the
     // same pointer type as the relocated pointer. It can be casted to the correct type later
     // if it's desired. However, they must have the same address space.
-    GCRelocateOperands Operands(CS);
-    Assert(Operands.getDerivedPtr()->getType()->isPointerTy(),
+    GCRelocateInst &Relocate = cast<GCRelocateInst>(*CS.getInstruction());
+    Assert(Relocate.getDerivedPtr()->getType()->isPointerTy(),
            "gc.relocate: relocated value must be a gc pointer", CS);
 
     // gc_relocate return type must be a pointer type, and is verified earlier in
     // VerifyIntrinsicType().
     Assert(cast<PointerType>(CS.getType())->getAddressSpace() ==
-           cast<PointerType>(Operands.getDerivedPtr()->getType())->getAddressSpace(),
+           cast<PointerType>(Relocate.getDerivedPtr()->getType())->getAddressSpace(),
            "gc.relocate: relocating a pointer shouldn't change its address space", CS);
     break;
   }