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Avoid closure creation in hot code #3290

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Merged
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Oct 9, 2017
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Avoid closure creation in hot code #3290

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3 changes: 2 additions & 1 deletion compiler/src/dotty/tools/dotc/core/Flags.scala
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Original file line number Diff line number Diff line change
Expand Up @@ -22,7 +22,8 @@ object Flags {
else if (that.bits == 0) this
else {
val tbits = bits & that.bits & KINDFLAGS
assert(tbits != 0, s"illegal flagset combination: $this and $that")
if (tbits == 0)
assert(false, s"illegal flagset combination: $this and $that")
FlagSet(tbits | ((this.bits | that.bits) & ~KINDFLAGS))
}

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