From f02138e6ec475dc0a3c0e6f664a068db3dc2c214 Mon Sep 17 00:00:00 2001 From: Jakob Stoklund Olesen Date: Tue, 5 Feb 2013 18:08:45 +0000 Subject: [PATCH] Move MRI liveouts to MBlaze return instructions. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@174408 91177308-0d34-0410-b5e6-96231b3b80d8 --- lib/Target/MBlaze/MBlazeISelLowering.cpp | 32 +++++++++++------------- lib/Target/MBlaze/MBlazeInstrInfo.td | 4 +-- 2 files changed, 17 insertions(+), 19 deletions(-) diff --git a/lib/Target/MBlaze/MBlazeISelLowering.cpp b/lib/Target/MBlaze/MBlazeISelLowering.cpp index 5b3c6fede35..7664c60c932 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 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()); } //===----------------------------------------------------------------------===// diff --git a/lib/Target/MBlaze/MBlazeInstrInfo.td b/lib/Target/MBlaze/MBlazeInstrInfo.td index 139bf7156a6..f86bc0b0b5a 100644 --- a/lib/Target/MBlaze/MBlazeInstrInfo.td +++ b/lib/Target/MBlaze/MBlazeInstrInfo.td @@ -28,9 +28,9 @@ def SDT_MBCallSeqEnd : SDCallSeqEnd<[SDTCisVT<0, i32>, SDTCisVT<1, i32>]>; //===----------------------------------------------------------------------===// def MBlazeRet : SDNode<"MBlazeISD::Ret", SDT_MBlazeRet, - [SDNPHasChain, SDNPOptInGlue]>; + [SDNPHasChain, SDNPOptInGlue, SDNPVariadic]>; def MBlazeIRet : SDNode<"MBlazeISD::IRet", SDT_MBlazeIRet, - [SDNPHasChain, SDNPOptInGlue]>; + [SDNPHasChain, SDNPOptInGlue, SDNPVariadic]>; def MBlazeJmpLink : SDNode<"MBlazeISD::JmpLink",SDT_MBlazeJmpLink, [SDNPHasChain,SDNPOptInGlue,SDNPOutGlue, -- 2.34.1