830016f24e
See https://go-review.googlesource.com/c/go/+/483875 for more details. This happens when sccp generates a temporary Value v217 and it attempts to apply rewrite rule on it to see if v217 can be fold to constant value, v227 = Const64 <int32> v117 = Const32 <int32> [3] v217 = Mul32 <int32> v117 v227 In this case, v217 can not match any rules in generic rules, so it left in entry block while its arguments lives other blocks, which breaks the dominance relationship. These temporary values are dead values and will be removed in further deadcode phase but checkFunc catches them because it runs right after every pass. The proposed fix is to invalidate unmatched temporary value immediately. |
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