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Hexagon: Add libcall declarations for special memcpy #144975

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Hexagon: Add libcall declarations for special memcpy #144975

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6 changes: 6 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 @@ -368,6 +368,9 @@ def AEABI_MEMCLR : RuntimeLibcall;
def AEABI_MEMCLR4 : RuntimeLibcall;
def AEABI_MEMCLR8 : RuntimeLibcall;

// Hexagon calls
def HEXAGON_MEMCPY_LIKELY_ALIGNED_MIN32BYTES_MULT8BYTES : RuntimeLibcall;

//--------------------------------------------------------------------
// Define implementation default libcalls
//--------------------------------------------------------------------
Expand Down Expand Up @@ -1247,6 +1250,9 @@ def __hexagon_fast2_sqrtf : RuntimeLibcallImpl<SQRT_F32>;
// This is the only fast library function for sqrtd.
def __hexagon_fast2_sqrtdf2 : RuntimeLibcallImpl<SQRT_F64>;

def __hexagon_memcpy_likely_aligned_min32bytes_mult8bytes
: RuntimeLibcallImpl<HEXAGON_MEMCPY_LIKELY_ALIGNED_MIN32BYTES_MULT8BYTES>;

//===----------------------------------------------------------------------===//
// Mips16 Runtime Libcalls
//===----------------------------------------------------------------------===//
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4 changes: 4 additions & 0 deletions llvm/lib/IR/RuntimeLibcalls.cpp
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Expand Up @@ -616,6 +616,10 @@ void RuntimeLibcallsInfo::initLibcalls(const Triple &TT,
setLibcallImpl(RTLIB::SQRT_F32, RTLIB::__hexagon_fast2_sqrtf);
else
setLibcallImpl(RTLIB::SQRT_F32, RTLIB::__hexagon_sqrtf);

setLibcallImpl(
RTLIB::HEXAGON_MEMCPY_LIKELY_ALIGNED_MIN32BYTES_MULT8BYTES,
RTLIB::__hexagon_memcpy_likely_aligned_min32bytes_mult8bytes);
}

if (TT.getArch() == Triple::ArchType::msp430)
Expand Down
10 changes: 6 additions & 4 deletions llvm/lib/Target/Hexagon/HexagonSelectionDAGInfo.cpp
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Expand Up @@ -41,18 +41,20 @@ SDValue HexagonSelectionDAGInfo::EmitTargetCodeForMemcpy(
Entry.Node = Size;
Args.push_back(Entry);

const char *SpecialMemcpyName =
"__hexagon_memcpy_likely_aligned_min32bytes_mult8bytes";
const char *SpecialMemcpyName = TLI.getLibcallName(
RTLIB::HEXAGON_MEMCPY_LIKELY_ALIGNED_MIN32BYTES_MULT8BYTES);
const MachineFunction &MF = DAG.getMachineFunction();
bool LongCalls = MF.getSubtarget<HexagonSubtarget>().useLongCalls();
unsigned Flags = LongCalls ? HexagonII::HMOTF_ConstExtended : 0;

CallingConv::ID CC = TLI.getLibcallCallingConv(
RTLIB::HEXAGON_MEMCPY_LIKELY_ALIGNED_MIN32BYTES_MULT8BYTES);

TargetLowering::CallLoweringInfo CLI(DAG);
CLI.setDebugLoc(dl)
.setChain(Chain)
.setLibCallee(
TLI.getLibcallCallingConv(RTLIB::MEMCPY),
Type::getVoidTy(*DAG.getContext()),
CC, Type::getVoidTy(*DAG.getContext()),
DAG.getTargetExternalSymbol(
SpecialMemcpyName, TLI.getPointerTy(DAG.getDataLayout()), Flags),
std::move(Args))
Expand Down
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