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...ndex, MachinePointerInfo(), false, false, 0); “ I have two questions here: (1) should I return some merges values( returnValue, DstValue) ? or only return returnValue is right? ( the dag dumped out looks better if I return the merged values) (2) How the FrameIndex should be computed? I use DAG.getFrameIndex((dyn_cast<FrameIndexSDnode>( frindex.getNode()))->getIndex(), i32), not confident it is correct, any good examples to understand to this? Best Kevin -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20...

...rCall function in ISelLowering.cpp, there's this code (From the MIPS target): * // Create the frame index object for this incoming parameter LastFI = MFI->CreateFixedObject(ValVT.getSizeInBits()/8, VA.getLocMemOffset(), true); SDValue PtrOff = DAG.getFrameIndex(LastFI, getPointerTy());* This looks like what I might want to change, but I'm not sure what's the right thing to do. Here's what I tried to change it to: * LastFI = MFI->CreateStackObject(ValVT.getSizeInBits()/8, VA.getLocMemOffset(), false);...

Hi, Is it possible to add a spill code (a pair of store /load ) to the machinecode in a pass before the instruction emitter? If so, how can I calculate the address (offset to the sp) for the spill store/load instructions? Thanks -------------- next part -------------- An HTML attachment was scrubbed... URL:

...e - not 32 bit!"); } // Create the frame index object for this incoming parameter... int FI = MFI->CreateFixedObject(ObjSize, VA.getLocMemOffset(), true); // Create the SelectionDAG nodes corresponding to a load from this // parameter. SDValue FIN = DAG.getFrameIndex(FI, MVT::i32); InVals.push_back(DAG.getLoad(VA.getLocVT(), dl, Chain, FIN, MachinePointerInfo::getFixedStack(FI), false, false, false, 0)); } ... [3] Example of prologue moving stack pointer (which the frame pointer is...

Hello everybody, hi Evan, this patch changes the lowering of arguments for tail call optimized calls. Before arguments that could be overwritten by each other were explicitly lowered to a stack slot, not giving the register allocator a chance to optimize. Now a sequence of copyto/copyfrom virtual registers ensures that arguments are loaded in (virtual) registers before they are lowered to the

On Wed, May 20, 2009 at 4:55 PM, Dan Gohman <gohman at apple.com> wrote: > Can you explain why you chose the approach of using a new pass? > I pictured removing LegalizeDAG's type legalization code would > mostly consist of finding all the places that use TLI.getTypeAction > and just deleting code for handling its Expand and Promote. Are you > anticipating something more

On May 20, 2009, at 1:34 PM, Eli Friedman wrote: > On Wed, May 20, 2009 at 1:19 PM, Eli Friedman > <eli.friedman at gmail.com> wrote: > >> Per subject, this patch adding an additional pass to handle vector >> >> operations; the idea is that this allows removing the code from >> >> LegalizeDAG that handles illegal types, which should be a significant

..., all to a temporary // stack slot. MachineFunction &MF = DAG.getMachineFunction(); - unsigned MemSize = Op.getValueType().getSizeInBits()/8; + unsigned MemSize = DstTy.getSizeInBits()/8; int SSFI = MF.getFrameInfo()->CreateStackObject(MemSize, MemSize); SDValue StackSlot = DAG.getFrameIndex(SSFI, getPointerTy()); + unsigned Opc; switch (Op.getValueType().getSimpleVT()) { default: assert(0 && "Invalid FP_TO_SINT to lower!"); @@ -4833,7 +4861,7 @@ SDValue Chain = DAG.getEntryNode(); SDValue Value = Op.getOperand(0); if (isScalarFPTypeInSSEReg(Op.get...