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Fix a TODO by removing some unnecesary copies.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116915 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Eric Christopher 2010-10-20 08:02:24 +00:00
parent 02003caf22
commit 3659ac22c0
1 changed files with 5 additions and 13 deletions
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18
lib/Target/ARM/ARMFastISel.cpp
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@ -1384,25 +1384,17 @@ bool ARMFastISel::FinishCall(EVT RetVT, SmallVectorImpl<unsigned> &UsedRegs,
if (RVLocs.size() == 2 && RetVT.getSimpleVT().SimpleTy == MVT::f64) {
// For this move we copy into two registers and then move into the
// double fp reg we want.
// TODO: Are the copies necessary?
TargetRegisterClass *CopyRC = TLI.getRegClassFor(MVT::i32);
unsigned Copy1 = createResultReg(CopyRC);
BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DL, TII.get(TargetOpcode::COPY),
Copy1).addReg(RVLocs[0].getLocReg());
UsedRegs.push_back(RVLocs[0].getLocReg());
unsigned Copy2 = createResultReg(CopyRC);
BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DL, TII.get(TargetOpcode::COPY),
Copy2).addReg(RVLocs[1].getLocReg());
UsedRegs.push_back(RVLocs[1].getLocReg());
EVT DestVT = RVLocs[0].getValVT();
TargetRegisterClass* DstRC = TLI.getRegClassFor(DestVT);
unsigned ResultReg = createResultReg(DstRC);
AddOptionalDefs(BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DL,
TII.get(ARM::VMOVDRR), ResultReg)
.addReg(Copy1).addReg(Copy2));
.addReg(RVLocs[0].getLocReg())
.addReg(RVLocs[1].getLocReg()));
UsedRegs.push_back(RVLocs[0].getLocReg());
UsedRegs.push_back(RVLocs[1].getLocReg());
// Finally update the result.
UpdateValueMap(I, ResultReg);
} else {