Clean whitespaces.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160668 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 34 insertions, 32 deletions

diff --git a/lib/Transforms/Scalar/Sink.cpp b/lib/Transforms/Scalar/Sink.cpp
index d6ec651..34f1d6c 100644
--- a/lib/Transforms/Scalar/Sink.cpp
+++ b/lib/Transforms/Scalar/Sink.cpp
@@ -40,9 +40,9 @@ namespace {
     Sinking() : FunctionPass(ID) {
       initializeSinkingPass(*PassRegistry::getPassRegistry());
     }
-    
+
     virtual bool runOnFunction(Function &F);
-    
+
     virtual void getAnalysisUsage(AnalysisUsage &AU) const {
       AU.setPreservesCFG();
       FunctionPass::getAnalysisUsage(AU);
@@ -59,7 +59,7 @@ namespace {
     bool IsAcceptableTarget(Instruction *Inst, BasicBlock *SuccToSinkTo) const;
   };
 } // end anonymous namespace
-  
+
 char Sinking::ID = 0;
 INITIALIZE_PASS_BEGIN(Sinking, "sink", "Code sinking", false, false)
 INITIALIZE_PASS_DEPENDENCY(LoopInfo)
@@ -71,7 +71,7 @@ FunctionPass *llvm::createSinkingPass() { return new Sinking(); }
 
 /// AllUsesDominatedByBlock - Return true if all uses of the specified value
 /// occur in blocks dominated by the specified block.
-bool Sinking::AllUsesDominatedByBlock(Instruction *Inst, 
+bool Sinking::AllUsesDominatedByBlock(Instruction *Inst,
                                       BasicBlock *BB) const {
   // Ignoring debug uses is necessary so debug info doesn't affect the code.
   // This may leave a referencing dbg_value in the original block, before
@@ -101,18 +101,18 @@ bool Sinking::runOnFunction(Function &F) {
   AA = &getAnalysis<AliasAnalysis>();
 
   bool MadeChange, EverMadeChange = false;
-  
+
   do {
     MadeChange = false;
     DEBUG(dbgs() << "Sinking iteration " << NumSinkIter << "\n");
     // Process all basic blocks.
-    for (Function::iterator I = F.begin(), E = F.end(); 
+    for (Function::iterator I = F.begin(), E = F.end();
          I != E; ++I)
       MadeChange |= ProcessBlock(*I);
     EverMadeChange |= MadeChange;
     NumSinkIter++;
   } while (MadeChange);
-  
+
   return EverMadeChange;
 }
 
@@ -121,8 +121,8 @@ bool Sinking::ProcessBlock(BasicBlock &BB) {
   if (BB.getTerminator()->getNumSuccessors() <= 1 || BB.empty()) return false;
 
   // Don't bother sinking code out of unreachable blocks. In addition to being
-  // unprofitable, it can also lead to infinite looping, because in an unreachable
-  // loop there may be nowhere to stop.
+  // unprofitable, it can also lead to infinite looping, because in an
+  // unreachable loop there may be nowhere to stop.
   if (!DT->isReachableFromEntry(&BB)) return false;
 
   bool MadeChange = false;
@@ -134,7 +134,7 @@ bool Sinking::ProcessBlock(BasicBlock &BB) {
   SmallPtrSet<Instruction *, 8> Stores;
   do {
     Instruction *Inst = I;  // The instruction to sink.
-    
+
     // Predecrement I (if it's not begin) so that it isn't invalidated by
     // sinking.
     ProcessedBegin = I == BB.begin();
@@ -146,10 +146,10 @@ bool Sinking::ProcessBlock(BasicBlock &BB) {
 
     if (SinkInstruction(Inst, Stores))
       ++NumSunk, MadeChange = true;
-    
+
     // If we just processed the first instruction in the block, we're done.
   } while (!ProcessedBegin);
-  
+
   return MadeChange;
 }
 
@@ -177,16 +177,17 @@ static bool isSafeToMove(Instruction *Inst, AliasAnalysis *AA,
 
 /// IsAcceptableTarget - Return true if it is possible to sink the instruction
 /// in the specified basic block.
-bool Sinking::IsAcceptableTarget(Instruction *Inst, BasicBlock *SuccToSinkTo) const {
+bool Sinking::IsAcceptableTarget(Instruction *Inst,
+                                 BasicBlock *SuccToSinkTo) const {
   assert(Inst && "Instruction to be sunk is null");
   assert(SuccToSinkTo && "Candidate sink target is null");
-  
+
   // It is not possible to sink an instruction into its own block.  This can
   // happen with loops.
   if (Inst->getParent() == SuccToSinkTo)
     return false;
-    
-  // If the block has multiple predecessors, this would introduce computation 
+
+  // If the block has multiple predecessors, this would introduce computation
   // on different code paths.  We could split the critical edge, but for now we
   // just punt.
   // FIXME: Split critical edges if not backedges.
@@ -195,18 +196,19 @@ bool Sinking::IsAcceptableTarget(Instruction *Inst, BasicBlock *SuccToSinkTo) co
     // other code paths.
     if (!isSafeToSpeculativelyExecute(Inst))
       return false;
-    
+
     // We don't want to sink across a critical edge if we don't dominate the
     // successor. We could be introducing calculations to new code paths.
     if (!DT->dominates(Inst->getParent(), SuccToSinkTo))
       return false;
-    
+
     // Don't sink instructions into a loop.
-    Loop *succ = LI->getLoopFor(SuccToSinkTo), *cur = LI->getLoopFor(Inst->getParent());
+    Loop *succ = LI->getLoopFor(SuccToSinkTo);
+    Loop *cur = LI->getLoopFor(Inst->getParent());
     if (succ != 0 && succ != cur)
       return false;
   }
-  
+
   // Finally, check that all the uses of the instruction are actually
   // dominated by the candidate
   return AllUsesDominatedByBlock(Inst, SuccToSinkTo);
@@ -219,7 +221,7 @@ bool Sinking::SinkInstruction(Instruction *Inst,
   // Check if it's safe to move the instruction.
   if (!isSafeToMove(Inst, AA, Stores))
     return false;
-  
+
   // FIXME: This should include support for sinking instructions within the
   // block they are currently in to shorten the live ranges.  We often get
   // instructions sunk into the top of a large block, but it would be better to
@@ -227,41 +229,41 @@ bool Sinking::SinkInstruction(Instruction *Inst,
   // be careful not to *increase* register pressure though, e.g. sinking
   // "x = y + z" down if it kills y and z would increase the live ranges of y
   // and z and only shrink the live range of x.
-  
+
   // SuccToSinkTo - This is the successor to sink this instruction to, once we
   // decide.
   BasicBlock *SuccToSinkTo = 0;
-  
+
   // Instructions can only be sunk if all their uses are in blocks
   // dominated by one of the successors.
   // Look at all the postdominators and see if we can sink it in one.
   DomTreeNode *DTN = DT->getNode(Inst->getParent());
-  for (DomTreeNode::iterator I = DTN->begin(), E = DTN->end(); 
+  for (DomTreeNode::iterator I = DTN->begin(), E = DTN->end();
       I != E && SuccToSinkTo == 0; ++I) {
     BasicBlock *Candidate = (*I)->getBlock();
-    if ((*I)->getIDom()->getBlock() == Inst->getParent() && 
+    if ((*I)->getIDom()->getBlock() == Inst->getParent() &&
         IsAcceptableTarget(Inst, Candidate))
       SuccToSinkTo = Candidate;
   }
 
-  // If no suitable postdominator was found, look at all the successors and 
+  // If no suitable postdominator was found, look at all the successors and
   // decide which one we should sink to, if any.
-  for (succ_iterator I = succ_begin(Inst->getParent()), 
+  for (succ_iterator I = succ_begin(Inst->getParent()),
       E = succ_end(Inst->getParent()); I != E && SuccToSinkTo == 0; ++I) {
     if (IsAcceptableTarget(Inst, *I))
       SuccToSinkTo = *I;
   }
-      
+
   // If we couldn't find a block to sink to, ignore this instruction.
   if (SuccToSinkTo == 0)
     return false;
-  
+
   DEBUG(dbgs() << "Sink" << *Inst << " (";
-        WriteAsOperand(dbgs(), Inst->getParent(), false); 
+        WriteAsOperand(dbgs(), Inst->getParent(), false);
         dbgs() << " -> ";
-        WriteAsOperand(dbgs(), SuccToSinkTo, false); 
+        WriteAsOperand(dbgs(), SuccToSinkTo, false);
         dbgs() << ")\n");
-  
+
   // Move the instruction.
   Inst->moveBefore(SuccToSinkTo->getFirstInsertionPt());
   return true;