[PATCH] D120449: [RISCV][RVV] Add strict vfcvt intrinsics that have side effects for dynamically-set rounding mode

[ShihPo Hung via Phabricator via cfe-commits]

arcbbb added inline comments.


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Comment at: llvm/lib/Target/RISCV/RISCVISelLowering.cpp:4683
+    Ops.push_back(VL);
+    Ops.push_back(DAG.getUNDEF(XLenVT)); // Policy
+  }
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kito-cheng wrote:
> Is this operand for tail policy? if so why this is `UNDEF`? I guess this should be `TAIL_AGNOSTIC` rather than `UNDEF`?
Because unmasked pseudos doesn't have a policy operand,
TA/TU is distinguished by checking if passthru is undef. I think it is proper to leave undef here.


Repository:
  rG LLVM Github Monorepo

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  https://reviews.llvm.org/D120449/new/

https://reviews.llvm.org/D120449