#define DEBUG_TYPE "arm-selectiondag-info"
#include "ARMTargetMachine.h"
+#include "llvm/DerivedTypes.h"
+#include "llvm/CodeGen/SelectionDAG.h"
using namespace llvm;
ARMSelectionDAGInfo::ARMSelectionDAGInfo(const TargetMachine &TM)
DAG.getNode(ISD::ADD, dl, MVT::i32, Src,
DAG.getConstant(SrcOff, MVT::i32)),
SrcPtrInfo.getWithOffset(SrcOff), isVolatile,
- false, 0);
+ false, false, 0);
TFOps[i] = Loads[i].getValue(1);
SrcOff += VTSize;
}
Loads[i] = DAG.getLoad(VT, dl, Chain,
DAG.getNode(ISD::ADD, dl, MVT::i32, Src,
DAG.getConstant(SrcOff, MVT::i32)),
- SrcPtrInfo.getWithOffset(SrcOff), false, false, 0);
+ SrcPtrInfo.getWithOffset(SrcOff),
+ false, false, false, 0);
TFOps[i] = Loads[i].getValue(1);
++i;
SrcOff += VTSize;
}
return DAG.getNode(ISD::TokenFactor, dl, MVT::Other, &TFOps[0], i);
}
+
+// Adjust parameters for memset, EABI uses format (ptr, size, value),
+// GNU library uses (ptr, value, size)
+// See RTABI section 4.3.4
+SDValue ARMSelectionDAGInfo::
+EmitTargetCodeForMemset(SelectionDAG &DAG, DebugLoc dl,
+ SDValue Chain, SDValue Dst,
+ SDValue Src, SDValue Size,
+ unsigned Align, bool isVolatile,
+ MachinePointerInfo DstPtrInfo) const {
+ // Use default for non AAPCS (or Darwin) subtargets
+ if (!Subtarget->isAAPCS_ABI() || Subtarget->isTargetDarwin())
+ return SDValue();
+
+ const ARMTargetLowering &TLI =
+ *static_cast<const ARMTargetLowering*>(DAG.getTarget().getTargetLowering());
+ TargetLowering::ArgListTy Args;
+ TargetLowering::ArgListEntry Entry;
+
+ // First argument: data pointer
+ Type *IntPtrTy = TLI.getDataLayout()->getIntPtrType(*DAG.getContext());
+ Entry.Node = Dst;
+ Entry.Ty = IntPtrTy;
+ Args.push_back(Entry);
+
+ // Second argument: buffer size
+ Entry.Node = Size;
+ Entry.Ty = IntPtrTy;
+ Entry.isSExt = false;
+ Args.push_back(Entry);
+
+ // Extend or truncate the argument to be an i32 value for the call.
+ if (Src.getValueType().bitsGT(MVT::i32))
+ Src = DAG.getNode(ISD::TRUNCATE, dl, MVT::i32, Src);
+ else
+ Src = DAG.getNode(ISD::ZERO_EXTEND, dl, MVT::i32, Src);
+
+ // Third argument: value to fill
+ Entry.Node = Src;
+ Entry.Ty = Type::getInt32Ty(*DAG.getContext());
+ Entry.isSExt = true;
+ Args.push_back(Entry);
+
+ // Emit __eabi_memset call
+ TargetLowering::CallLoweringInfo CLI(Chain,
+ Type::getVoidTy(*DAG.getContext()), // return type
+ false, // return sign ext
+ false, // return zero ext
+ false, // is var arg
+ false, // is in regs
+ 0, // number of fixed arguments
+ TLI.getLibcallCallingConv(RTLIB::MEMSET), // call conv
+ false, // is tail call
+ false, // does not return
+ false, // is return val used
+ DAG.getExternalSymbol(TLI.getLibcallName(RTLIB::MEMSET),
+ TLI.getPointerTy()), // callee
+ Args, DAG, dl);
+ std::pair<SDValue,SDValue> CallResult =
+ TLI.LowerCallTo(CLI);
+
+ return CallResult.second;
+}