/// supports tail call optimization.
static bool IsTailCallConvention(CallingConv::ID CC) {
return (CC == CallingConv::Fast || CC == CallingConv::GHC ||
- CC == CallingConv::HiPE);
+ CC == CallingConv::HiPE || CC == CallingConv::HHVM);
}
/// \brief Return true if the calling convention is a C calling convention.
/// Callee pop is necessary to support tail calls.
bool X86::isCalleePop(CallingConv::ID CallingConv,
bool is64Bit, bool IsVarArg, bool TailCallOpt) {
+
+ if (IsTailCallConvention(CallingConv))
+ return IsVarArg ? false : TailCallOpt;
+
switch (CallingConv) {
default:
return false;
case CallingConv::X86_FastCall:
case CallingConv::X86_ThisCall:
return !is64Bit;
- case CallingConv::Fast:
- case CallingConv::GHC:
- case CallingConv::HiPE:
- if (IsVarArg)
- return false;
- return TailCallOpt;
}
}