Revert "Revert "Add Constant Hoisting Pass" (r200034)"

[oota-llvm.git] / lib / CodeGen / SelectionDAG / SelectionDAGBuilder.cpp

diff --git a/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp b/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
index fc25d7281ac088f2fcdbea32747a42310e703f0a..a561c5190aca3c34c845bb53cfa072396c2d10c7 100644 (file)
--- a/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
+++ b/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
@@ -892,6 +892,7 @@ void SelectionDAGBuilder::clear() {
   PendingExports.clear();
   CurInst = NULL;
   HasTailCall = false;
+  SDNodeOrder = LowestSDNodeOrder;
 }
 
 /// clearDanglingDebugInfo - Clear the dangling debug information
@@ -2944,6 +2945,9 @@ void SelectionDAGBuilder::visitBitCast(const User &I) {
   if (DestVT != N.getValueType())
     setValue(&I, DAG.getNode(ISD::BITCAST, getCurSDLoc(),
                              DestVT, N)); // convert types.
+  else if(ConstantSDNode *C = dyn_cast<ConstantSDNode>(N))
+    setValue(&I, DAG.getConstant(C->getAPIntValue(), C->getValueType(0),
+                                 /*isTarget=*/false, /*isOpaque*/true));
   else
     setValue(&I, N);            // noop cast.
 }
@@ -3380,7 +3384,7 @@ void SelectionDAGBuilder::visitAlloca(const AllocaInst &I) {
 
   // Inform the Frame Information that we have just allocated a variable-sized
   // object.
-  FuncInfo.MF->getFrameInfo()->CreateVariableSizedObject(Align ? Align : 1);
+  FuncInfo.MF->getFrameInfo()->CreateVariableSizedObject(Align ? Align : 1, &I);
 }
 
 void SelectionDAGBuilder::visitLoad(const LoadInst &I) {
@@ -4303,7 +4307,7 @@ static SDValue expandExp2(SDLoc dl, SDValue Op, SelectionDAG &DAG,
 static SDValue expandPow(SDLoc dl, SDValue LHS, SDValue RHS,
                          SelectionDAG &DAG, const TargetLowering &TLI) {
   bool IsExp10 = false;
-  if (LHS.getValueType() == MVT::f32 && LHS.getValueType() == MVT::f32 &&
+  if (LHS.getValueType() == MVT::f32 && RHS.getValueType() == MVT::f32 &&
       LimitFloatPrecision > 0 && LimitFloatPrecision <= 18) {
     if (ConstantFPSDNode *LHSC = dyn_cast<ConstantFPSDNode>(LHS)) {
       APFloat Ten(10.0f);
@@ -6886,11 +6890,14 @@ void SelectionDAGBuilder::visitStackmap(const CallInst &CI) {
   DAG.ReplaceAllUsesWith(Call, MN);
 
   DAG.DeleteNode(Call);
+
+  // Inform the Frame Information that we have a stackmap in this function.
+  FuncInfo.MF->getFrameInfo()->setHasStackMap();
 }
 
 /// \brief Lower llvm.experimental.patchpoint directly to its target opcode.
 void SelectionDAGBuilder::visitPatchpoint(const CallInst &CI) {
-  // void|i64 @llvm.experimental.patchpoint.void|i64(i32 <id>,
+  // void|i64 @llvm.experimental.patchpoint.void|i64(i64 <id>,
   //                                                 i32 <numBytes>,
   //                                                 i8* <target>,
   //                                                 i32 <numArgs>,
@@ -6938,7 +6945,7 @@ void SelectionDAGBuilder::visitPatchpoint(const CallInst &CI) {
   // Add the <id> and <numBytes> constants.
   SDValue IDVal = getValue(CI.getOperand(PatchPointOpers::IDPos));
   Ops.push_back(DAG.getTargetConstant(
-                  cast<ConstantSDNode>(IDVal)->getZExtValue(), MVT::i32));
+                  cast<ConstantSDNode>(IDVal)->getZExtValue(), MVT::i64));
   SDValue NBytesVal = getValue(CI.getOperand(PatchPointOpers::NBytesPos));
   Ops.push_back(DAG.getTargetConstant(
                   cast<ConstantSDNode>(NBytesVal)->getZExtValue(), MVT::i32));
@@ -7025,6 +7032,9 @@ void SelectionDAGBuilder::visitPatchpoint(const CallInst &CI) {
   } else
     DAG.ReplaceAllUsesWith(Call, MN);
   DAG.DeleteNode(Call);
+
+  // Inform the Frame Information that we have a patchpoint in this function.
+  FuncInfo.MF->getFrameInfo()->setHasPatchPoint();
 }
 
 /// TargetLowering::LowerCallTo - This is the default LowerCallTo