forked from M-Labs/artiq
compiler: do not use invoke for calls to nounwind ffi functions.
Otherwise, declarations such as: @syscall(flags={"nounwind", "nowrite"}) def foo(...): trip an LLVM assert because the invoke instruction and the !tbaa metadata are no longer compatible since LLVM 4.0.
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@ -1812,7 +1812,8 @@ class ARTIQIRGenerator(algorithm.Visitor):
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assert None not in args
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if self.unwind_target is None:
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if self.unwind_target is None or \
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types.is_function(callee.type) and "nounwind" in callee.type.flags:
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insn = self.append(ir.Call(func, args, arg_exprs))
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else:
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after_invoke = self.add_block("invoke")
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