[PATCH] D81746: [AArch64] Fix BTI instruction emission.
Momchil Velikov via Phabricator via llvm-commits
llvm-commits at lists.llvm.org
Mon Jun 15 07:33:25 PDT 2020
chill added inline comments.
================
Comment at: llvm/lib/Target/AArch64/AArch64BranchTargets.cpp:125
- // PACI[AB]SP are implicitly BTI JC, so no BTI instruction needed there.
- if (MBBI != MBB.end() && (MBBI->getOpcode() == AArch64::PACIASP ||
- MBBI->getOpcode() == AArch64::PACIBSP))
+ // SCTLR_EL1.BT[01] is set to 0 by default which means
+ // PACI[AB]SP are implicitly BTI C so no BTI C instruction is needed there.
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What if they are set to a different value?
Repository:
rG LLVM Github Monorepo
CHANGES SINCE LAST ACTION
https://reviews.llvm.org/D81746/new/
https://reviews.llvm.org/D81746
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