diff options
Diffstat (limited to 'llvm/lib/Target/WebAssembly/WebAssemblyISelLowering.cpp')
| -rw-r--r-- | llvm/lib/Target/WebAssembly/WebAssemblyISelLowering.cpp | 18 |
1 files changed, 14 insertions, 4 deletions
diff --git a/llvm/lib/Target/WebAssembly/WebAssemblyISelLowering.cpp b/llvm/lib/Target/WebAssembly/WebAssemblyISelLowering.cpp index c9be0b3f2df..475d13ceefa 100644 --- a/llvm/lib/Target/WebAssembly/WebAssemblyISelLowering.cpp +++ b/llvm/lib/Target/WebAssembly/WebAssemblyISelLowering.cpp @@ -229,13 +229,23 @@ WebAssemblyTargetLowering::LowerCall(CallLoweringInfo &CLI, MachineFunction &MF = DAG.getMachineFunction(); CallingConv::ID CallConv = CLI.CallConv; - if (CallConv != CallingConv::C) - fail(DL, DAG, "WebAssembly doesn't support non-C calling conventions"); - if (CLI.IsTailCall || MF.getTarget().Options.GuaranteedTailCallOpt) - fail(DL, DAG, "WebAssembly doesn't support tail call yet"); + if (CallConv != CallingConv::C && + CallConv != CallingConv::Fast && + CallConv != CallingConv::Cold) + fail(DL, DAG, + "WebAssembly doesn't support language-specific or target-specific " + "calling conventions yet"); if (CLI.IsPatchPoint) fail(DL, DAG, "WebAssembly doesn't support patch point yet"); + // WebAssembly doesn't currently support explicit tail calls. If they are + // required, fail. Otherwise, just disable them. + if ((CallConv == CallingConv::Fast && CLI.IsTailCall && + MF.getTarget().Options.GuaranteedTailCallOpt) || + (CLI.CS && CLI.CS->isMustTailCall())) + fail(DL, DAG, "WebAssembly doesn't support tail call yet"); + CLI.IsTailCall = false; + SmallVectorImpl<ISD::OutputArg> &Outs = CLI.Outs; SmallVectorImpl<SDValue> &OutVals = CLI.OutVals; |
