diff options
Diffstat (limited to 'lib/Target/MBlaze/MBlazeISelLowering.cpp')
-rw-r--r-- | lib/Target/MBlaze/MBlazeISelLowering.cpp | 32 |
1 files changed, 15 insertions, 17 deletions
diff --git a/lib/Target/MBlaze/MBlazeISelLowering.cpp b/lib/Target/MBlaze/MBlazeISelLowering.cpp index 5b3c6fe..7664c60 100644 --- a/lib/Target/MBlaze/MBlazeISelLowering.cpp +++ b/lib/Target/MBlaze/MBlazeISelLowering.cpp @@ -1028,15 +1028,17 @@ LowerReturn(SDValue Chain, CallingConv::ID CallConv, bool isVarArg, // Analize return values. CCInfo.AnalyzeReturn(Outs, RetCC_MBlaze); - // If this is the first return lowered for this function, add - // the regs to the liveout set for the function. - if (DAG.getMachineFunction().getRegInfo().liveout_empty()) { - for (unsigned i = 0; i != RVLocs.size(); ++i) - if (RVLocs[i].isRegLoc()) - DAG.getMachineFunction().getRegInfo().addLiveOut(RVLocs[i].getLocReg()); - } - SDValue Flag; + SmallVector<SDValue, 4> RetOps(1, Chain); + + // If this function is using the interrupt_handler calling convention + // then use "rtid r14, 0" otherwise use "rtsd r15, 8" + unsigned Ret = (CallConv == CallingConv::MBLAZE_INTR) ? MBlazeISD::IRet + : MBlazeISD::Ret; + unsigned Reg = (CallConv == CallingConv::MBLAZE_INTR) ? MBlaze::R14 + : MBlaze::R15; + RetOps.push_back(DAG.getRegister(Reg, MVT::i32)); + // Copy the result values into the output registers. for (unsigned i = 0; i != RVLocs.size(); ++i) { @@ -1049,20 +1051,16 @@ LowerReturn(SDValue Chain, CallingConv::ID CallConv, bool isVarArg, // guarantee that all emitted copies are // stuck together, avoiding something bad Flag = Chain.getValue(1); + RetOps.push_back(DAG.getRegister(VA.getLocReg(), VA.getLocVT())); } - // If this function is using the interrupt_handler calling convention - // then use "rtid r14, 0" otherwise use "rtsd r15, 8" - unsigned Ret = (CallConv == CallingConv::MBLAZE_INTR) ? MBlazeISD::IRet - : MBlazeISD::Ret; - unsigned Reg = (CallConv == CallingConv::MBLAZE_INTR) ? MBlaze::R14 - : MBlaze::R15; - SDValue DReg = DAG.getRegister(Reg, MVT::i32); + RetOps[0] = Chain; // Update chain. + // Add the flag if we have it. if (Flag.getNode()) - return DAG.getNode(Ret, dl, MVT::Other, Chain, DReg, Flag); + RetOps.push_back(Flag); - return DAG.getNode(Ret, dl, MVT::Other, Chain, DReg); + return DAG.getNode(Ret, dl, MVT::Other, &RetOps[0], RetOps.size()); } //===----------------------------------------------------------------------===// |