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b371220285
Instructions are now only marked as variadic if they use variable_ops in their ins list. A variadic SDNode is typically used for call nodes that have the call arguments as operands. A variadic MachineInstr can actually encode a variable number of operands, for example ARM's stm/ldm instructions. A call instruction does not have to be variadic. The call argument registers are added as implicit operands. This change remove the MCID::Variadic flags from most call and return instructions, allowing us to better verify their operands. llvm-svn: 162599
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