x64: port the remainder of select to ISLE (#3973)

Previous changes had ported the difficult "`select` based on an `fcmp`"
patterns to ISLE; this completes porting of `select` by moving over the
final two kinds of patterns:
 - `select` based on an `icmp`
 - `select` based on a value
This commit is contained in:
Andrew Brown
2022-03-30 13:32:26 -07:00
committed by GitHub
parent a5752773b2
commit e8dd13cf87
5 changed files with 408 additions and 332 deletions

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