X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=lib%2FCodeGen%2FTargetLoweringBase.cpp;h=f1b796919134d7ceb51fe9332caf8fe2e81776bf;hb=27cfb7a41d02e2f36f9dbcd467b557116c86c3f0;hp=30305af21152396c1b47221fedaedf753977ec93;hpb=59d3ae6cdc4316ad338cd848251f33a236ccb36c;p=oota-llvm.git

diff --git a/lib/CodeGen/TargetLoweringBase.cpp b/lib/CodeGen/TargetLoweringBase.cpp
index 30305af2115..f1b79691913 100644
--- a/lib/CodeGen/TargetLoweringBase.cpp
+++ b/lib/CodeGen/TargetLoweringBase.cpp
@@ -18,11 +18,15 @@
 #include "llvm/CodeGen/Analysis.h"
 #include "llvm/CodeGen/MachineFrameInfo.h"
 #include "llvm/CodeGen/MachineFunction.h"
+#include "llvm/CodeGen/MachineInstrBuilder.h"
 #include "llvm/CodeGen/MachineJumpTableInfo.h"
+#include "llvm/CodeGen/StackMaps.h"
 #include "llvm/IR/DataLayout.h"
 #include "llvm/IR/DerivedTypes.h"
 #include "llvm/IR/GlobalVariable.h"
+#include "llvm/IR/Mangler.h"
 #include "llvm/MC/MCAsmInfo.h"
+#include "llvm/MC/MCContext.h"
 #include "llvm/MC/MCExpr.h"
 #include "llvm/Support/CommandLine.h"
 #include "llvm/Support/ErrorHandling.h"
@@ -659,17 +663,18 @@ static void InitCmpLibcallCCs(ISD::CondCode *CCs) {
 /// NOTE: The constructor takes ownership of TLOF.
 TargetLoweringBase::TargetLoweringBase(const TargetMachine &tm,
                                        const TargetLoweringObjectFile *tlof)
-  : TM(tm), TD(TM.getDataLayout()), TLOF(*tlof) {
+  : TM(tm), DL(TM.getDataLayout()), TLOF(*tlof) {
   initActions();
 
   // Perform these initializations only once.
-  IsLittleEndian = TD->isLittleEndian();
+  IsLittleEndian = DL->isLittleEndian();
   MaxStoresPerMemset = MaxStoresPerMemcpy = MaxStoresPerMemmove = 8;
   MaxStoresPerMemsetOptSize = MaxStoresPerMemcpyOptSize
     = MaxStoresPerMemmoveOptSize = 4;
   UseUnderscoreSetJmp = false;
   UseUnderscoreLongJmp = false;
   SelectIsExpensive = false;
+  HasMultipleConditionRegisters = false;
   IntDivIsCheap = false;
   Pow2DivIsCheap = false;
   JumpIsExpensive = false;
@@ -799,7 +804,7 @@ MVT TargetLoweringBase::getPointerTy(uint32_t AS) const {
 }
 
 unsigned TargetLoweringBase::getPointerSizeInBits(uint32_t AS) const {
-  return TD->getPointerSizeInBits(AS);
+  return DL->getPointerSizeInBits(AS);
 }
 
 unsigned TargetLoweringBase::getPointerTypeSizeInBits(Type *Ty) const {
@@ -808,7 +813,7 @@ unsigned TargetLoweringBase::getPointerTypeSizeInBits(Type *Ty) const {
 }
 
 MVT TargetLoweringBase::getScalarShiftAmountTy(EVT LHSTy) const {
-  return MVT::getIntegerVT(8*TD->getPointerSize(0));
+  return MVT::getIntegerVT(8*DL->getPointerSize(0));
 }
 
 EVT TargetLoweringBase::getShiftAmountTy(EVT LHSTy) const {
@@ -894,6 +899,59 @@ bool TargetLoweringBase::isLegalRC(const TargetRegisterClass *RC) const {
   return false;
 }
 
+/// Replace/modify any TargetFrameIndex operands with a targte-dependent
+/// sequence of memory operands that is recognized by PrologEpilogInserter.
+MachineBasicBlock*
+TargetLoweringBase::emitPatchPoint(MachineInstr *MI,
+                                   MachineBasicBlock *MBB) const {
+  const TargetMachine &TM = getTargetMachine();
+  MachineFunction &MF = *MI->getParent()->getParent();
+
+  // MI changes inside this loop as we grow operands.
+  for(unsigned OperIdx = 0; OperIdx != MI->getNumOperands(); ++OperIdx) {
+    MachineOperand &MO = MI->getOperand(OperIdx);
+    if (!MO.isFI())
+      continue;
+
+    // foldMemoryOperand builds a new MI after replacing a single FI operand
+    // with the canonical set of five x86 addressing-mode operands.
+    int FI = MO.getIndex();
+    MachineInstrBuilder MIB = BuildMI(MF, MI->getDebugLoc(), MI->getDesc());
+
+    // Copy operands before the frame-index.
+    for (unsigned i = 0; i < OperIdx; ++i)
+      MIB.addOperand(MI->getOperand(i));
+    // Add frame index operands: direct-mem-ref tag, #FI, offset.
+    MIB.addImm(StackMaps::DirectMemRefOp);
+    MIB.addOperand(MI->getOperand(OperIdx));
+    MIB.addImm(0);
+    // Copy the operands after the frame index.
+    for (unsigned i = OperIdx + 1; i != MI->getNumOperands(); ++i)
+      MIB.addOperand(MI->getOperand(i));
+
+    // Inherit previous memory operands.
+    MIB->setMemRefs(MI->memoperands_begin(), MI->memoperands_end());
+    assert(MIB->mayLoad() && "Folded a stackmap use to a non-load!");
+
+    // Add a new memory operand for this FI.
+    const MachineFrameInfo &MFI = *MF.getFrameInfo();
+    assert(MFI.getObjectOffset(FI) != -1);
+    MachineMemOperand *MMO =
+      MF.getMachineMemOperand(MachinePointerInfo::getFixedStack(FI),
+                              MachineMemOperand::MOLoad,
+                              TM.getDataLayout()->getPointerSize(),
+                              MFI.getObjectAlignment(FI));
+    MIB->addMemOperand(MF, MMO);
+
+    // Replace the instruction and update the operand index.
+    MBB->insert(MachineBasicBlock::iterator(MI), MIB);
+    OperIdx += (MIB->getNumOperands() - MI->getNumOperands()) - 1;
+    MI->eraseFromParent();
+    MI = MIB;
+  }
+  return MBB;
+}
+
 /// findRepresentativeClass - Return the largest legal super-reg register class
 /// of the register class for the specified type and its associated "cost".
 std::pair<const TargetRegisterClass*, uint8_t>
@@ -1087,7 +1145,7 @@ void TargetLoweringBase::computeRegisterProperties() {
   for (unsigned i = 0; i != MVT::LAST_VALUETYPE; ++i) {
     const TargetRegisterClass* RRC;
     uint8_t Cost;
-    tie(RRC, Cost) =  findRepresentativeClass((MVT::SimpleValueType)i);
+    std::tie(RRC, Cost) = findRepresentativeClass((MVT::SimpleValueType)i);
     RepRegClassForVT[i] = RRC;
     RepRegClassCostForVT[i] = Cost;
   }
@@ -1230,7 +1288,7 @@ void llvm::GetReturnInfo(Type* ReturnType, AttributeSet attr,
 /// function arguments in the caller parameter area.  This is the actual
 /// alignment, not its logarithm.
 unsigned TargetLoweringBase::getByValTypeAlignment(Type *Ty) const {
-  return TD->getCallFrameTypeAlignment(Ty);
+  return DL->getABITypeAlignment(Ty);
 }
 
 //===----------------------------------------------------------------------===//
@@ -1364,6 +1422,8 @@ bool TargetLoweringBase::isLegalAddressingMode(const AddrMode &AM,
       return false;
     // Allow 2*r as r+r.
     break;
+  default: // Don't allow n * r
+    return false;
   }
 
   return true;