diff options
Diffstat (limited to 'llvm/lib/Target/WebAssembly/WebAssemblyISelLowering.cpp')
| -rw-r--r-- | llvm/lib/Target/WebAssembly/WebAssemblyISelLowering.cpp | 42 |
1 files changed, 38 insertions, 4 deletions
diff --git a/llvm/lib/Target/WebAssembly/WebAssemblyISelLowering.cpp b/llvm/lib/Target/WebAssembly/WebAssemblyISelLowering.cpp index b1bb4deb626..639e19a52dc 100644 --- a/llvm/lib/Target/WebAssembly/WebAssemblyISelLowering.cpp +++ b/llvm/lib/Target/WebAssembly/WebAssemblyISelLowering.cpp @@ -141,8 +141,13 @@ SDValue WebAssemblyTargetLowering::LowerReturn( assert(Outs.size() <= 1 && "WebAssembly can only return up to one value"); if (CallConv != CallingConv::C) fail(DL, DAG, "WebAssembly doesn't support non-C calling conventions"); + if (IsVarArg) + fail(DL, DAG, "WebAssembly doesn't support varargs yet"); - // FIXME: Implement LowerReturn. + SmallVector<SDValue, 4> RetOps(1, Chain); + RetOps.append(OutVals.begin(), OutVals.end()); + const SDValue Ops[] = {Chain, OutVals.front()}; + Chain = DAG.getNode(WebAssemblyISD::RETURN, DL, MVT::Other, Ops); return Chain; } @@ -160,9 +165,38 @@ SDValue WebAssemblyTargetLowering::LowerFormalArguments( if (MF.getFunction()->hasStructRetAttr()) fail(DL, DAG, "WebAssembly doesn't support struct return yet"); - // FIXME: Implement LowerFormalArguments. - for (const ISD::InputArg &In : Ins) - InVals.push_back(DAG.getNode(ISD::UNDEF, DL, In.VT)); + unsigned ArgNo = 0; + for (const ISD::InputArg &In : Ins) { + if (In.Flags.isZExt()) + fail(DL, DAG, "WebAssembly hasn't implemented zext arguments"); + if (In.Flags.isSExt()) + fail(DL, DAG, "WebAssembly hasn't implemented sext arguments"); + if (In.Flags.isInReg()) + fail(DL, DAG, "WebAssembly hasn't implemented inreg arguments"); + if (In.Flags.isSRet()) + fail(DL, DAG, "WebAssembly hasn't implemented sret arguments"); + if (In.Flags.isByVal()) + fail(DL, DAG, "WebAssembly hasn't implemented byval arguments"); + if (In.Flags.isInAlloca()) + fail(DL, DAG, "WebAssembly hasn't implemented inalloca arguments"); + if (In.Flags.isNest()) + fail(DL, DAG, "WebAssembly hasn't implemented nest arguments"); + if (In.Flags.isReturned()) + fail(DL, DAG, "WebAssembly hasn't implemented returned arguments"); + if (In.Flags.isInConsecutiveRegs()) + fail(DL, DAG, "WebAssembly hasn't implemented cons regs arguments"); + if (In.Flags.isInConsecutiveRegsLast()) + fail(DL, DAG, "WebAssembly hasn't implemented cons regs last arguments"); + if (In.Flags.isSplit()) + fail(DL, DAG, "WebAssembly hasn't implemented split arguments"); + if (In.VT != MVT::i32) + fail(DL, DAG, "WebAssembly hasn't implemented non-i32 arguments"); + if (!In.Used) + fail(DL, DAG, "WebAssembly hasn't implemented unused arguments"); + // FIXME Do something with In.getOrigAlign()? + InVals.push_back(DAG.getNode(WebAssemblyISD::ARGUMENT, DL, In.VT, + DAG.getTargetConstant(ArgNo++, DL, MVT::i32))); + } return Chain; } |
