search for: g_intrinsic

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2019 Mar 11
4
GlobalISel: Ambiguous intrinsic semantics problem
...e of vectors on arm64, which can contain both fp and int elements, and if target intrinsics have been defined to use their type overloading to determine the semantics, then we can select the wrong instruction. Some approaches to fix this: We can try to propagate the missing information through the G_INTRINSIC instruction. We could do this either through some additional storage in MachineInstr, or through an additional operand to store type information (a single bit per operand should suffice). These come with the drawbacks of either increasing the size of MachineInstr, or breaking existing code that dea...