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@@ -4057,8 +4057,8 @@ generated x86 code on the right-hand side. Notice that variable
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\code{x} is assigned to \code{rbx}, a callee-saved register. Thus, it
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is already in a safe place during the second call to
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\code{read\_int}. Next, notice that variable \code{y} is assigned to
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-\code{rcx}, a caller-saved register, because there are no function
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-calls in the remainder of the block.
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+\code{rcx}, a caller-saved register, because \code{y} is not in the
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+live-after set of a \code{callq} instruction.
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Next we analyze the example from the callee point of view, focusing on
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the prelude and conclusion of the \code{main} function. As usual the
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Jeremy Siek