How to turn off specific optimization flags in gcc


How to turn off specific optimization flags in gcc

For example I want to compile with optimization -Os, but -Os optimization turns on -ftree-dce. How do I turn it off -ftree-dce alone?

There is usually an equivalent ‘no’ flag. For example, -ftree-dce can be turned off by -fnotree-dce. Check the gcc docs for more flags.

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