ARM Compiler v5.04 for µVision armcc User Guide : 9.25 _

9.25 __declspec(noinline)

The __declspec(noinline) attribute suppresses the inlining of a function at the call points of the function.

__declspec(noinline) can also be applied to constant data, to prevent the compiler from using the value for optimization purposes, without affecting its placement in the object. This is a feature that can be used for patchable constants, that is, data that is later patched to a different value. It is an error to try to use such constants in a context where a constant value is required. For example, an array dimension.

Note

This __declspec attribute has the function attribute equivalent __attribute__((noinline)).

Examples

/* Prevent y being used for optimization */
__declspec(noinline) const int y = 5;
/* Suppress inlining of foo() wherever foo() is called */
__declspec(noinline) int foo(void);

Related reference

9.39 __attribute__((noinline)) function attribute

9.62 __attribute__((noinline)) constant variable attribute

9.85 #pragma inline, #pragma no_inline

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