[PATCH] D46920: [MachineOutliner] Don't outline instructions that modify SP.
Eli Friedman via Phabricator via llvm-commits
llvm-commits at lists.llvm.org
Tue May 15 17:22:18 PDT 2018
efriedma created this revision.
efriedma added a reviewer: jpaquette.
Herald added a reviewer: javed.absar.
This breaks the code which saves and restores LR, so we can't outline without doing something more complicated for stack adjustment.
Found by inspection; we get lucky in most cases because getMemOpInfo only handles STRWpost, not any other pre/post-increment forms. But it hits a couple of artificial testcases in the tree.
Repository:
rL LLVM
https://reviews.llvm.org/D46920
Files:
lib/Target/AArch64/AArch64InstrInfo.cpp
test/CodeGen/AArch64/machine-outliner-remarks.ll
test/CodeGen/AArch64/machine-outliner.ll
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