[PATCH] D84479: [X86] Detect if EFLAGs is live across XBEGIN pseudo instruction. Add it as livein to the basic blocks created when expanding the pseudo

[Craig Topper via Phabricator via llvm-commits]

craig.topper added a comment.

In D84479#2174059 <https://reviews.llvm.org/D84479#2174059>, @ivanbaev wrote:

> Thank you for checking on mainMBB and fallBB. Which direction: forward or backward  - do you prefer for isEFLAGSLiveAfter()?


I think I'd prefer to keep the forward direction.  The code is shared with cmov handling which is also fixing incorrect kill flags on the cmov pseudo instruction.


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https://reviews.llvm.org/D84479