Improve SSA representation of FE_FETCH #5040
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The op2 of FE_FETCH is only written if the loop edge is taken. Fix up the SSA form to use the pre-assignment value if the exit edge is taken. This allows us to properly infer the type of the loop variable, without letting the pre-loop type leak in.
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The op2 of FE_FETCH is only written if the loop edge is taken.
Fix up the SSA form to use the pre-assignment value if the exit
edge is taken.
This allows us to properly infer the type of the loop variable,
without letting the pre-loop type leak in.