Nikita Popov 57530c23a5
[GlobalOpt] Do not promote malloc if there are atomic loads/stores (#137158)
When converting a malloc stored to a global into a global, we will
introduce an i1 flag to track whether the global has been initialized.

In case of atomic loads/stores, this will result in verifier failures,
because atomic ops on i1 are illegal. Even if we changed this to i8, I
don't think it is a good idea to change atomic types in that way.

Instead, bail out of the transform is we encounter any atomic
loads/stores of the global.

Fixes https://github.com/llvm/llvm-project/issues/137152.
2025-04-24 15:15:47 +02:00
..