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XCore: Declare libcalls used for align 4 memcpy #144976

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XCore: Declare libcalls used for align 4 memcpy #144976

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9 changes: 9 additions & 0 deletions llvm/include/llvm/IR/RuntimeLibcalls.td
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Original file line number Diff line number Diff line change
Expand Up @@ -371,6 +371,9 @@ def AEABI_MEMCLR8 : RuntimeLibcall;
// Hexagon calls
def HEXAGON_MEMCPY_LIKELY_ALIGNED_MIN32BYTES_MULT8BYTES : RuntimeLibcall;

// XCore calls
def MEMCPY_ALIGN_4 : RuntimeLibcall;

//--------------------------------------------------------------------
// Define implementation default libcalls
//--------------------------------------------------------------------
Expand Down Expand Up @@ -1544,6 +1547,12 @@ def _allrem : RuntimeLibcallImpl<SREM_I64>; // CallingConv::X86_StdCall
def _aullrem : RuntimeLibcallImpl<UREM_I64>; // CallingConv::X86_StdCall
def _allmul : RuntimeLibcallImpl<MUL_I64>; // CallingConv::X86_StdCall

//===----------------------------------------------------------------------===//
// XCore Runtime Libcalls
//===----------------------------------------------------------------------===//

def __memcpy_4 : RuntimeLibcallImpl<MEMCPY_ALIGN_4>;

//===----------------------------------------------------------------------===//
// ZOS Runtime Libcalls
//===----------------------------------------------------------------------===//
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3 changes: 3 additions & 0 deletions llvm/lib/IR/RuntimeLibcalls.cpp
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Expand Up @@ -627,4 +627,7 @@ void RuntimeLibcallsInfo::initLibcalls(const Triple &TT,

if (TT.isSystemZ() && TT.isOSzOS())
setZOSLibCallNameOverrides();

if (TT.getArch() == Triple::ArchType::xcore)
setLibcallImpl(RTLIB::MEMCPY_ALIGN_4, RTLIB::__memcpy_4);
}
13 changes: 8 additions & 5 deletions llvm/lib/Target/XCore/XCoreSelectionDAGInfo.cpp
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Expand Up @@ -39,14 +39,17 @@ SDValue XCoreSelectionDAGInfo::EmitTargetCodeForMemcpy(
Entry.Node = Src; Args.push_back(Entry);
Entry.Node = Size; Args.push_back(Entry);

const char *MemcpyAlign4Name = TLI.getLibcallName(RTLIB::MEMCPY_ALIGN_4);
CallingConv::ID CC = TLI.getLibcallCallingConv(RTLIB::MEMCPY_ALIGN_4);

TargetLowering::CallLoweringInfo CLI(DAG);
CLI.setDebugLoc(dl)
.setChain(Chain)
.setLibCallee(TLI.getLibcallCallingConv(RTLIB::MEMCPY),
Type::getVoidTy(*DAG.getContext()),
DAG.getExternalSymbol(
"__memcpy_4", TLI.getPointerTy(DAG.getDataLayout())),
std::move(Args))
.setLibCallee(
CC, Type::getVoidTy(*DAG.getContext()),
DAG.getExternalSymbol(MemcpyAlign4Name,
TLI.getPointerTy(DAG.getDataLayout())),
std::move(Args))
.setDiscardResult();

std::pair<SDValue,SDValue> CallResult = TLI.LowerCallTo(CLI);
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