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| author | Jirui Wu <jirui.wu@arm.com> | 2023-02-16 16:28:09 +0000 |
|---|---|---|
| committer | Jirui Wu <jirui.wu@arm.com> | 2023-02-24 10:32:30 +0000 |
| commit | bb0403ae2e8f872369b1ce6f88d42d8bf02b922e (patch) | |
| tree | 25fe15bc42446bf0f16119cc6bc8500bd6b334dd /llvm/lib/Bitcode/Reader/BitcodeReader.cpp | |
| parent | ee737ad30fa22256e609279184214f75441acefd (diff) | |
| download | llvm-bb0403ae2e8f872369b1ce6f88d42d8bf02b922e.zip llvm-bb0403ae2e8f872369b1ce6f88d42d8bf02b922e.tar.gz llvm-bb0403ae2e8f872369b1ce6f88d42d8bf02b922e.tar.bz2 | |
[ARM] Remove redundant BTI instructions for table jumps
A BTI instruction was previously inserted at the beginning of each block
that has its address stored in a jump table. Jump tables only emit
indirect jumps in ARM or Thumb1 modes. However, PACBTI is not supported
in these modes. As a result, BTI instructions emitted by jump tables are
redundant. Removing redundant BTI instructions improves the code size
and prevents potential gadgets.
Differential Revision: https://reviews.llvm.org/D144470
Diffstat (limited to 'llvm/lib/Bitcode/Reader/BitcodeReader.cpp')
0 files changed, 0 insertions, 0 deletions