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| author | DianQK <dianqk@dianqk.net> | 2024-06-30 06:23:27 +0800 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2024-06-30 06:23:27 +0800 |
| commit | 4a96803abda2ad74f326de0af6b16552067bda65 (patch) | |
| tree | c459ebf28f25f833b968b673313e7d98b2b6d02b /llvm/utils/FileCheck/FileCheck.cpp | |
| parent | 56b2fcf001b765ff0886c058e3945f5d9b39b81c (diff) | |
| download | llvm-4a96803abda2ad74f326de0af6b16552067bda65.zip llvm-4a96803abda2ad74f326de0af6b16552067bda65.tar.gz llvm-4a96803abda2ad74f326de0af6b16552067bda65.tar.bz2 | |
[AArch64] Avoid overflow when using shl lower mul (#97148)
Fixes #97147.
Transforming `(mul x, -(2^(N-M) - 1) * 2^M)` to `(sub (shl x, M), (shl
x, N))` will cause overflow when N is 32 and M is 31. I still added
checks for all scenarios, even other scenarios, don't seem to cause overflow.
Diffstat (limited to 'llvm/utils/FileCheck/FileCheck.cpp')
0 files changed, 0 insertions, 0 deletions