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M R Swami Reddy wrote:They do, and that's right. Unless you select -O you don't get any optimizations, no matter what other flags you set.Thank you very much for the clarification. Do I need to set -O1 for case-1 and case-2: "-O followed by disabling all -O1 flags" (ie -O0 equivalently)?
You won't get exactly the same results as -O0 no matter what you do, since a lot of optimizations are just enabled by -O.
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