[CIR][ThroughMLIR] Lower UnreachableOp #1539
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bcardosolopes
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Apr 1, 2025
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This also removes some unused `#include`s. I choose to allow lowering to LLVM dialect when we're lowering CIR to MLIR core dialects, because some operations don't have their counterparts in these dialects (for example, `UnreachableOp -> llvm.unreachable` and `LLVMIntrinsicCallOp -> cir.llvm.intr.xxx`). I don't think we can delay them to the MLIR->LLVM pass as it seems we assume all CIR operations have been lowered after CIR->MLIR conversion. Co-authored-by: Yue Huang <[email protected]>
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This also removes some unused
#includes.I choose to allow lowering to LLVM dialect when we're lowering CIR to MLIR core dialects, because some operations don't have their counterparts in these dialects (for example,
UnreachableOp -> llvm.unreachableandLLVMIntrinsicCallOp -> cir.llvm.intr.xxx). I don't think we can delay them to the MLIR->LLVM pass as it seems we assume all CIR operations have been lowered after CIR->MLIR conversion.