Inlining Options

These options allow you to specify the amount of source code inlining done by HP aC++.

+inline_level num

+inline_level num

The +inline_level option controls how C++ inlining hints influence HP aC++. Such inlining happens in addition to functions that are explicitly tagged with the inline keyword. (For C89, use the __inline keyword).




	NOTE: The +d and +inline_level 0 options turn off all inlining, including implicit inlining.

Specify num as any value between 0 and 9. Refer to the following table:

num	Description
`0`	No inlining is done (same as the +d option).
`1`	Only functions marked with `inline` or implied by the language to be `inline` are considered for inlining. This is the default for C++ at `+O1`.
`2`	Specifying 2 provides more inlining than level 1. This is the default level at optimization levels `+O2`, `+O3`, and `+O4`.
`3-8`	Specifying values between 3 and 8 increases levels of inliner aggressiveness.
`9`	Specifying 9 inlines all functions other than recursive functions or those with a variable number of arguments.

The default level depends on +Olevel as shown in the following table:

level	num
0	1
1	1
2	2
3	2
4	2




	NOTE: This option controls functions declared with the `inline` keyword or within the class declaration and is effective at all optimization levels.

The options +O[no]inline and +Oinlinebudget control the high level optimizer that recognizes other opportunities in the same source file (+O3) or amongst all source files (+O4). For example,

aCC +inline_level 3 app.C

Inlining Options

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+inline_level num