[PATCH] D31908: [AntiDepBreaker] Don't rename callee saved register restore instruction

[Matthias Braun via Phabricator via llvm-commits]

MatzeB added a comment.

> 1 The function MFI.getPristineRegs(MF) gets all registers actually saved in the function, not necessary at the prolog position if shrink wrapping has occurred.

This statement is wrong! getPristineRegs() gives you all ABI callee saved registers that are not save/restored anywhere in the function (because the register was never modified or clobbered, so the save/restore so there was no need for a save/restore).


https://reviews.llvm.org/D31908