Intel® C++ Compiler 16.0 User and Reference Guide
Determines whether variables and arrays are naturally aligned.
Only available on IA-32 architecture
Linux and OS X: | -align -noalign |
Windows: | None |
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-noalign |
Variables and arrays are aligned according to the gcc model, which means they are aligned to 4-byte boundaries. |
This option determines whether variables and arrays are naturally aligned. Option -align forces the following natural alignment:
Type |
Alignment |
|---|---|
double |
8 bytes |
long long |
8 bytes |
long double |
16 bytes |
If you are not interacting with system libraries or other libraries that are compiled without -align, this option can improve performance by reducing misaligned accesses.
This option can also be specified as -m[no-]align-double. The options are equivalent.
If you are interacting with compatible libraries, this option can improve performance by reducing misaligned accesses. However, If you are interacting with noncompatible libraries or libraries that are compiled without option -align, your application may not perform as expected.
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