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Compiler switch: /optimize:2 and /O2

abhimodak
New Contributor I
‎01-11-2010 08:43 AM
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I think the compiler switches /optimize:2 and /O2 are not equivalent. The current documentation says that /O2 is equivalent to /optimize:1 + /optimize:2. However, that does not seem to be working either.

Focusing only on loop vectorization, for example, with the default /O2 loops are vectorized while use of /optimize:2 does not do it.

Are /optimize:n deprecated?

Abhi
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Steven_L_Intel1
Employee
‎01-11-2010 09:13 AM
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You are correct that the documentation is wrong. /optimize:3 is equivalent to /O2 - /optimize:2 is equivalent to /O1. /optimize is the "DEC spelling" and is indeed deprecated.

I will let the writers know. Thanks for bringing this to our attention.

To summarize:

/optimize:0 = /Od
/optimize:1 or 2 = /O1
/optimize:3 or 4 = /O2
/optimize:5 = /O3
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