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diff --git a/chapter05/README.md b/chapter05/README.md index 7337da33..2732066e 100644 --- a/chapter05/README.md +++ b/chapter05/README.md @@ -83,6 +83,10 @@ one for each of the control inputs to that `Region`. The result computed by a control input to the `Region` can be active at a time, and the `Phi` passes through the data value from the matching input.[^1] +Its type is the meet of its data-input types. Two different integer constants +merge to `TypeInteger.BOT`: the value is unknown, but it is still an integer. +Integer arithmetic likewise retains an integer result type when it cannot fold. + #### `RegionNode` In this Sea of Nodes, there is an embedded Control Flow Graph - and like a |