The R600 target got renamed to AMDGPU, but I missed deleting the old

directory during the vendor import.  Delete it now.

1 files changed, 0 insertions, 365 deletions

diff --git a/contrib/llvm/lib/Target/R600/SIAnnotateControlFlow.cpp b/contrib/llvm/lib/Target/R600/SIAnnotateControlFlow.cpp
deleted file mode 100644
index ccfbf1b..0000000
--- a/contrib/llvm/lib/Target/R600/SIAnnotateControlFlow.cpp
+++ /dev/null
@@ -1,365 +0,0 @@
-//===-- SIAnnotateControlFlow.cpp -  ------------------===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-//
-/// \file
-/// Annotates the control flow with hardware specific intrinsics.
-//
-//===----------------------------------------------------------------------===//
-
-#include "AMDGPU.h"
-#include "llvm/ADT/DepthFirstIterator.h"
-#include "llvm/Analysis/LoopInfo.h"
-#include "llvm/IR/Constants.h"
-#include "llvm/IR/Dominators.h"
-#include "llvm/IR/Instructions.h"
-#include "llvm/IR/Module.h"
-#include "llvm/Pass.h"
-#include "llvm/Transforms/Utils/BasicBlockUtils.h"
-#include "llvm/Transforms/Utils/SSAUpdater.h"
-
-using namespace llvm;
-
-#define DEBUG_TYPE "si-annotate-control-flow"
-
-namespace {
-
-// Complex types used in this pass
-typedef std::pair<BasicBlock *, Value *> StackEntry;
-typedef SmallVector<StackEntry, 16> StackVector;
-
-// Intrinsic names the control flow is annotated with
-static const char *const IfIntrinsic = "llvm.SI.if";
-static const char *const ElseIntrinsic = "llvm.SI.else";
-static const char *const BreakIntrinsic = "llvm.SI.break";
-static const char *const IfBreakIntrinsic = "llvm.SI.if.break";
-static const char *const ElseBreakIntrinsic = "llvm.SI.else.break";
-static const char *const LoopIntrinsic = "llvm.SI.loop";
-static const char *const EndCfIntrinsic = "llvm.SI.end.cf";
-
-class SIAnnotateControlFlow : public FunctionPass {
-
-  static char ID;
-
-  Type *Boolean;
-  Type *Void;
-  Type *Int64;
-  Type *ReturnStruct;
-
-  ConstantInt *BoolTrue;
-  ConstantInt *BoolFalse;
-  UndefValue *BoolUndef;
-  Constant *Int64Zero;
-
-  Constant *If;
-  Constant *Else;
-  Constant *Break;
-  Constant *IfBreak;
-  Constant *ElseBreak;
-  Constant *Loop;
-  Constant *EndCf;
-
-  DominatorTree *DT;
-  StackVector Stack;
-
-  LoopInfo *LI;
-
-  bool isTopOfStack(BasicBlock *BB);
-
-  Value *popSaved();
-
-  void push(BasicBlock *BB, Value *Saved);
-
-  bool isElse(PHINode *Phi);
-
-  void eraseIfUnused(PHINode *Phi);
-
-  void openIf(BranchInst *Term);
-
-  void insertElse(BranchInst *Term);
-
-  Value *handleLoopCondition(Value *Cond, PHINode *Broken, llvm::Loop *L);
-
-  void handleLoop(BranchInst *Term);
-
-  void closeControlFlow(BasicBlock *BB);
-
-public:
-  SIAnnotateControlFlow():
-    FunctionPass(ID) { }
-
-  bool doInitialization(Module &M) override;
-
-  bool runOnFunction(Function &F) override;
-
-  const char *getPassName() const override {
-    return "SI annotate control flow";
-  }
-
-  void getAnalysisUsage(AnalysisUsage &AU) const override {
-    AU.addRequired<LoopInfoWrapperPass>();
-    AU.addRequired<DominatorTreeWrapperPass>();
-    AU.addPreserved<DominatorTreeWrapperPass>();
-    FunctionPass::getAnalysisUsage(AU);
-  }
-
-};
-
-} // end anonymous namespace
-
-char SIAnnotateControlFlow::ID = 0;
-
-/// \brief Initialize all the types and constants used in the pass
-bool SIAnnotateControlFlow::doInitialization(Module &M) {
-  LLVMContext &Context = M.getContext();
-
-  Void = Type::getVoidTy(Context);
-  Boolean = Type::getInt1Ty(Context);
-  Int64 = Type::getInt64Ty(Context);
-  ReturnStruct = StructType::get(Boolean, Int64, (Type *)nullptr);
-
-  BoolTrue = ConstantInt::getTrue(Context);
-  BoolFalse = ConstantInt::getFalse(Context);
-  BoolUndef = UndefValue::get(Boolean);
-  Int64Zero = ConstantInt::get(Int64, 0);
-
-  If = M.getOrInsertFunction(
-    IfIntrinsic, ReturnStruct, Boolean, (Type *)nullptr);
-
-  Else = M.getOrInsertFunction(
-    ElseIntrinsic, ReturnStruct, Int64, (Type *)nullptr);
-
-  Break = M.getOrInsertFunction(
-    BreakIntrinsic, Int64, Int64, (Type *)nullptr);
-
-  IfBreak = M.getOrInsertFunction(
-    IfBreakIntrinsic, Int64, Boolean, Int64, (Type *)nullptr);
-
-  ElseBreak = M.getOrInsertFunction(
-    ElseBreakIntrinsic, Int64, Int64, Int64, (Type *)nullptr);
-
-  Loop = M.getOrInsertFunction(
-    LoopIntrinsic, Boolean, Int64, (Type *)nullptr);
-
-  EndCf = M.getOrInsertFunction(
-    EndCfIntrinsic, Void, Int64, (Type *)nullptr);
-
-  return false;
-}
-
-/// \brief Is BB the last block saved on the stack ?
-bool SIAnnotateControlFlow::isTopOfStack(BasicBlock *BB) {
-  return !Stack.empty() && Stack.back().first == BB;
-}
-
-/// \brief Pop the last saved value from the control flow stack
-Value *SIAnnotateControlFlow::popSaved() {
-  return Stack.pop_back_val().second;
-}
-
-/// \brief Push a BB and saved value to the control flow stack
-void SIAnnotateControlFlow::push(BasicBlock *BB, Value *Saved) {
-  Stack.push_back(std::make_pair(BB, Saved));
-}
-
-/// \brief Can the condition represented by this PHI node treated like
-/// an "Else" block?
-bool SIAnnotateControlFlow::isElse(PHINode *Phi) {
-  BasicBlock *IDom = DT->getNode(Phi->getParent())->getIDom()->getBlock();
-  for (unsigned i = 0, e = Phi->getNumIncomingValues(); i != e; ++i) {
-    if (Phi->getIncomingBlock(i) == IDom) {
-
-      if (Phi->getIncomingValue(i) != BoolTrue)
-        return false;
-
-    } else {
-      if (Phi->getIncomingValue(i) != BoolFalse)
-        return false;
-
-    }
-  }
-  return true;
-}
-
-// \brief Erase "Phi" if it is not used any more
-void SIAnnotateControlFlow::eraseIfUnused(PHINode *Phi) {
-  if (!Phi->hasNUsesOrMore(1))
-    Phi->eraseFromParent();
-}
-
-/// \brief Open a new "If" block
-void SIAnnotateControlFlow::openIf(BranchInst *Term) {
-  Value *Ret = CallInst::Create(If, Term->getCondition(), "", Term);
-  Term->setCondition(ExtractValueInst::Create(Ret, 0, "", Term));
-  push(Term->getSuccessor(1), ExtractValueInst::Create(Ret, 1, "", Term));
-}
-
-/// \brief Close the last "If" block and open a new "Else" block
-void SIAnnotateControlFlow::insertElse(BranchInst *Term) {
-  Value *Ret = CallInst::Create(Else, popSaved(), "", Term);
-  Term->setCondition(ExtractValueInst::Create(Ret, 0, "", Term));
-  push(Term->getSuccessor(1), ExtractValueInst::Create(Ret, 1, "", Term));
-}
-
-/// \brief Recursively handle the condition leading to a loop
-Value *SIAnnotateControlFlow::handleLoopCondition(Value *Cond, PHINode *Broken,
-                                                  llvm::Loop *L) {
-
-  // Only search through PHI nodes which are inside the loop.  If we try this
-  // with PHI nodes that are outside of the loop, we end up inserting new PHI
-  // nodes outside of the loop which depend on values defined inside the loop.
-  // This will break the module with
-  // 'Instruction does not dominate all users!' errors.
-  PHINode *Phi = nullptr;
-  if ((Phi = dyn_cast<PHINode>(Cond)) && L->contains(Phi)) {
-
-    BasicBlock *Parent = Phi->getParent();
-    PHINode *NewPhi = PHINode::Create(Int64, 0, "", &Parent->front());
-    Value *Ret = NewPhi;
-
-    // Handle all non-constant incoming values first
-    for (unsigned i = 0, e = Phi->getNumIncomingValues(); i != e; ++i) {
-      Value *Incoming = Phi->getIncomingValue(i);
-      BasicBlock *From = Phi->getIncomingBlock(i);
-      if (isa<ConstantInt>(Incoming)) {
-        NewPhi->addIncoming(Broken, From);
-        continue;
-      }
-
-      Phi->setIncomingValue(i, BoolFalse);
-      Value *PhiArg = handleLoopCondition(Incoming, Broken, L);
-      NewPhi->addIncoming(PhiArg, From);
-    }
-
-    BasicBlock *IDom = DT->getNode(Parent)->getIDom()->getBlock();
-
-    for (unsigned i = 0, e = Phi->getNumIncomingValues(); i != e; ++i) {
-
-      Value *Incoming = Phi->getIncomingValue(i);
-      if (Incoming != BoolTrue)
-        continue;
-
-      BasicBlock *From = Phi->getIncomingBlock(i);
-      if (From == IDom) {
-        CallInst *OldEnd = dyn_cast<CallInst>(Parent->getFirstInsertionPt());
-        if (OldEnd && OldEnd->getCalledFunction() == EndCf) {
-          Value *Args[] = { OldEnd->getArgOperand(0), NewPhi };
-          Ret = CallInst::Create(ElseBreak, Args, "", OldEnd);
-          continue;
-        }
-      }
-      TerminatorInst *Insert = From->getTerminator();
-      Value *PhiArg = CallInst::Create(Break, Broken, "", Insert);
-      NewPhi->setIncomingValue(i, PhiArg);
-    }
-    eraseIfUnused(Phi);
-    return Ret;
-
-  } else if (Instruction *Inst = dyn_cast<Instruction>(Cond)) {
-    BasicBlock *Parent = Inst->getParent();
-    Instruction *Insert;
-    if (L->contains(Inst)) {
-      Insert = Parent->getTerminator();
-    } else {
-      Insert = L->getHeader()->getFirstNonPHIOrDbgOrLifetime();
-    }
-    Value *Args[] = { Cond, Broken };
-    return CallInst::Create(IfBreak, Args, "", Insert);
-
-  } else {
-    llvm_unreachable("Unhandled loop condition!");
-  }
-  return 0;
-}
-
-/// \brief Handle a back edge (loop)
-void SIAnnotateControlFlow::handleLoop(BranchInst *Term) {
-  BasicBlock *BB = Term->getParent();
-  llvm::Loop *L = LI->getLoopFor(BB);
-  BasicBlock *Target = Term->getSuccessor(1);
-  PHINode *Broken = PHINode::Create(Int64, 0, "", &Target->front());
-
-  Value *Cond = Term->getCondition();
-  Term->setCondition(BoolTrue);
-  Value *Arg = handleLoopCondition(Cond, Broken, L);
-
-  for (pred_iterator PI = pred_begin(Target), PE = pred_end(Target);
-       PI != PE; ++PI) {
-
-    Broken->addIncoming(*PI == BB ? Arg : Int64Zero, *PI);
-  }
-
-  Term->setCondition(CallInst::Create(Loop, Arg, "", Term));
-  push(Term->getSuccessor(0), Arg);
-}/// \brief Close the last opened control flow
-void SIAnnotateControlFlow::closeControlFlow(BasicBlock *BB) {
-  llvm::Loop *L = LI->getLoopFor(BB);
-
-  if (L && L->getHeader() == BB) {
-    // We can't insert an EndCF call into a loop header, because it will
-    // get executed on every iteration of the loop, when it should be
-    // executed only once before the loop.
-    SmallVector <BasicBlock*, 8> Latches;
-    L->getLoopLatches(Latches);
-
-    std::vector<BasicBlock*> Preds;
-    for (pred_iterator PI = pred_begin(BB), PE = pred_end(BB); PI != PE; ++PI) {
-      if (std::find(Latches.begin(), Latches.end(), *PI) == Latches.end())
-        Preds.push_back(*PI);
-    }
-    BB = llvm::SplitBlockPredecessors(BB, Preds, "endcf.split", nullptr, DT,
-                                      LI, false);
-  }
-
-  CallInst::Create(EndCf, popSaved(), "", BB->getFirstInsertionPt());
-}
-
-/// \brief Annotate the control flow with intrinsics so the backend can
-/// recognize if/then/else and loops.
-bool SIAnnotateControlFlow::runOnFunction(Function &F) {
-  DT = &getAnalysis<DominatorTreeWrapperPass>().getDomTree();
-  LI = &getAnalysis<LoopInfoWrapperPass>().getLoopInfo();
-
-  for (df_iterator<BasicBlock *> I = df_begin(&F.getEntryBlock()),
-       E = df_end(&F.getEntryBlock()); I != E; ++I) {
-
-    BranchInst *Term = dyn_cast<BranchInst>((*I)->getTerminator());
-
-    if (!Term || Term->isUnconditional()) {
-      if (isTopOfStack(*I))
-        closeControlFlow(*I);
-      continue;
-    }
-
-    if (I.nodeVisited(Term->getSuccessor(1))) {
-      if (isTopOfStack(*I))
-        closeControlFlow(*I);
-      handleLoop(Term);
-      continue;
-    }
-
-    if (isTopOfStack(*I)) {
-      PHINode *Phi = dyn_cast<PHINode>(Term->getCondition());
-      if (Phi && Phi->getParent() == *I && isElse(Phi)) {
-        insertElse(Term);
-        eraseIfUnused(Phi);
-        continue;
-      }
-      closeControlFlow(*I);
-    }
-    openIf(Term);
-  }
-
-  assert(Stack.empty());
-  return true;
-}
-
-/// \brief Create the annotation pass
-FunctionPass *llvm::createSIAnnotateControlFlowPass() {
-  return new SIAnnotateControlFlow();
-}