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| author | Florian Mayer <fmayer@google.com> | 2022-06-14 15:41:27 -0700 |
|---|---|---|
| committer | Florian Mayer <fmayer@google.com> | 2022-06-22 11:16:34 -0700 |
| commit | 476ced4b89594d329dd0aa8798a46153672ded3c (patch) | |
| tree | 5aca65ee1d298704e925884139c6c423326ee409 /llvm/lib/IR/Function.cpp | |
| parent | efbfde0dd0f92d89767df53cbfb883ecf93ffa83 (diff) | |
| download | llvm-476ced4b89594d329dd0aa8798a46153672ded3c.zip llvm-476ced4b89594d329dd0aa8798a46153672ded3c.tar.gz llvm-476ced4b89594d329dd0aa8798a46153672ded3c.tar.bz2 | |
[MTE] [HWASan] Support diamond lifetimes.
We were overly conservative and required a ret statement to be dominated
completely be a single lifetime.end marker. This is quite restrictive
and leads to two problems:
* limits coverage of use-after-scope, as we degenerate to
use-after-return;
* increases stack usage in programs, as we have to remove all lifetime
markers if we degenerate to use-after-return, which prevents
reuse of stack slots by the stack coloring algorithm.
Reviewed By: eugenis
Differential Revision: https://reviews.llvm.org/D127905
Diffstat (limited to 'llvm/lib/IR/Function.cpp')
0 files changed, 0 insertions, 0 deletions