[PATCH] D29872: Do not legalize large add with addc/adde, introduce addcarry and do it with uaddo/addcarry

[Amaury SECHET via Phabricator via llvm-commits]

deadalnix added inline comments.


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Comment at: lib/CodeGen/SelectionDAG/LegalizeIntegerTypes.cpp:1968
+    // Calculate the overflow: addition overflows iff a + b < a, and subtraction
+    // overflows iff a - b > a.
+    auto Cond = N->getOpcode() == ISD::UADDO ? ISD::SETULT : ISD::SETUGT;
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mkazantsev wrote:
> iff -> if?
iff is a shorthand for if and only if, to indicate bijection. it is commonly used in the comment int hat file, so I think this is fine.


https://reviews.llvm.org/D29872