Flags and Manuals
Documentation can be found at the Intel Software Technical Documentation site.
| Windows | Linux & Mac OS X | Comment |
|---|---|---|
| /Od | -O0 | No optimization |
| /O1 | -O1 | Optimize for size |
| /O2 | -O2 | Optimize for speed and enable some optimization |
| /O3 | -O3 | Enable all optimizations as O2, and intensive loop optimizations |
| /QxO | -xO | Enables SSE3, SSE2 and SSE instruction sets optimizations for non-Intel CPUs |
| /fast | -fast | Shorthand. On Windows this equates to "/O3 /Qipo /QxHost /no-prec-div" ; on Linux "-O3 -ipo -static -xHOST -no-prec-div". Note that the processor specific optimization flag (-xHOST) will optimize for the processor compiled on—it is the only flag of -fast, which may be overridden. |
| /Qprof-gen | -prof_gen | Compile the program and instrument it for a profile generating run. |
| /Qprof-use | -prof_use | May only be used after running a program that was previously compiled using prof_gen. Uses profile information during each step of the compilation process. |
Read more about this topic: Intel C++ Compiler
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