Fix for PR1075: bottom-up register-reduction scheduling actually increases register pressure. - Fixed bugs in sethi-ullman number computation and priority queue comparison functions. - Separate code that handles priority computation special cases from SU number computation.
Fix for PR1075: bottom-up register-reduction scheduling actually increases register pressure.
- Fixed bugs in sethi-ullman number computation and priority queue comparison
functions.
- Separate code that handles priority computation special cases from SU number computation.


git-svn-id: 0ff597fd157e6f4fc38580e8d64ab130330d2411@33025 91177308-0d34-0410-b5e6-96231b3b80d8

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