Reland 196270 "Generalize debug info / EH emission in AsmPrinter"

[oota-llvm.git] / lib / CodeGen / TargetLoweringBase.cpp

diff --git a/lib/CodeGen/TargetLoweringBase.cpp b/lib/CodeGen/TargetLoweringBase.cpp
index bfed53e07e3ec6e15bb94ff89cff83ee72586078..1ab198428ad087c7f6156243fbf809e88bf8577b 100644 (file)
--- a/lib/CodeGen/TargetLoweringBase.cpp
+++ b/lib/CodeGen/TargetLoweringBase.cpp
@@ -18,7 +18,9 @@
 #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"
@@ -354,6 +356,26 @@ static void InitLibcallNames(const char **Names, const TargetMachine &TM) {
   Names[RTLIB::SYNC_FETCH_AND_NAND_4] = "__sync_fetch_and_nand_4";
   Names[RTLIB::SYNC_FETCH_AND_NAND_8] = "__sync_fetch_and_nand_8";
   Names[RTLIB::SYNC_FETCH_AND_NAND_16] = "__sync_fetch_and_nand_16";
+  Names[RTLIB::SYNC_FETCH_AND_MAX_1] = "__sync_fetch_and_max_1";
+  Names[RTLIB::SYNC_FETCH_AND_MAX_2] = "__sync_fetch_and_max_2";
+  Names[RTLIB::SYNC_FETCH_AND_MAX_4] = "__sync_fetch_and_max_4";
+  Names[RTLIB::SYNC_FETCH_AND_MAX_8] = "__sync_fetch_and_max_8";
+  Names[RTLIB::SYNC_FETCH_AND_MAX_16] = "__sync_fetch_and_max_16";
+  Names[RTLIB::SYNC_FETCH_AND_UMAX_1] = "__sync_fetch_and_umax_1";
+  Names[RTLIB::SYNC_FETCH_AND_UMAX_2] = "__sync_fetch_and_umax_2";
+  Names[RTLIB::SYNC_FETCH_AND_UMAX_4] = "__sync_fetch_and_umax_4";
+  Names[RTLIB::SYNC_FETCH_AND_UMAX_8] = "__sync_fetch_and_umax_8";
+  Names[RTLIB::SYNC_FETCH_AND_UMAX_16] = "__sync_fetch_and_umax_16";
+  Names[RTLIB::SYNC_FETCH_AND_MIN_1] = "__sync_fetch_and_min_1";
+  Names[RTLIB::SYNC_FETCH_AND_MIN_2] = "__sync_fetch_and_min_2";
+  Names[RTLIB::SYNC_FETCH_AND_MIN_4] = "__sync_fetch_and_min_4";
+  Names[RTLIB::SYNC_FETCH_AND_MIN_8] = "__sync_fetch_and_min_8";
+  Names[RTLIB::SYNC_FETCH_AND_MIN_16] = "__sync_fetch_and_min_16";
+  Names[RTLIB::SYNC_FETCH_AND_UMIN_1] = "__sync_fetch_and_umin_1";
+  Names[RTLIB::SYNC_FETCH_AND_UMIN_2] = "__sync_fetch_and_umin_2";
+  Names[RTLIB::SYNC_FETCH_AND_UMIN_4] = "__sync_fetch_and_umin_4";
+  Names[RTLIB::SYNC_FETCH_AND_UMIN_8] = "__sync_fetch_and_umin_8";
+  Names[RTLIB::SYNC_FETCH_AND_UMIN_16] = "__sync_fetch_and_umin_16";
   
   if (Triple(TM.getTargetTriple()).getEnvironment() == Triple::GNU) {
     Names[RTLIB::SINCOS_F32] = "sincosf";
@@ -874,6 +896,59 @@ 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>
@@ -1268,6 +1343,7 @@ int TargetLoweringBase::InstructionOpcodeToISD(unsigned Opcode) const {
   case PtrToInt:       return ISD::BITCAST;
   case IntToPtr:       return ISD::BITCAST;
   case BitCast:        return ISD::BITCAST;
+  case AddrSpaceCast:  return ISD::ADDRSPACECAST;
   case ICmp:           return ISD::SETCC;
   case FCmp:           return ISD::SETCC;
   case PHI:            return 0;