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Author SHA1 Message Date
Matthias Braun eec1f3672a LivePhysRegs: Fix addLiveOutsNoPristines() for return blocks past PEI 
Re-commit r303938 and r303954 with a fix for addLiveIns(): the internal
addPristines() function must be called on an empty set or it may
accidentally reset saved registers.

- addLiveOutsNoPristines() needs to add callee saved registers that are
  actually saved and restored somewhere to the set (they are not
  pristine).
- Cleanup/rewrite the code for addLiveOuts()/addLiveOutsNoPristines().

This fixes the problem from D32156.

Differential Revision: https://reviews.llvm.org/D32464

llvm-svn: 304001
 2017-05-26 16:23:08 +00:00
Matthias Braun c93c063993 Revert "LivePhysRegs: Fix addLiveOutsNoPristines() for return blocks past PEI" 
Tentatively revert this to see if it fixes the buildbot stage2
breakages.

This reverts commit r303938.
This reverts commit r303954.

llvm-svn: 303960
 2017-05-26 02:25:20 +00:00
Matthias Braun 9e6826de77 Test for r303938 
llvm-svn: 303954
 2017-05-26 01:29:25 +00:00