HP aC++/HP C Programmer's Guide (B3901-90036; A.06.26; September 2011)

The +Oinline option indicates that any function can be inlined by the optimizer.
+Onoinline disables inlining of functions by the optimizer. This option does not affect
functions inlined at the source code level.
Use +O[no]inline at optimization levels 2, 3 and 4.
The default is +Oinline at optimization levels 3 and 4.
Usage:
+O[no]inline=function1{,function2...]
Enables [disables] optimizer inlining for the named functions.
+O[no]inline:filename
The file indicated by filename should contain a list of function names, separated by
commas or newlines. Optimization is enabled [disabled] for the named functions.
+Olit
+Olit=kind
The +Olit option places the data items that do not require load-time or runtime
initialization in a read-only data section. +Olit=all is the default for both HP aC++
and HP C. This represents a change from earlier versions of the HP C compiler, which
defaulted to +Olit=const. Note that if you attempt to modify the constant or literal, a
runtime signal 11 will be generated.
The defined values for kind are:
all All string literals and all const-qualified variables that do not require load-time
or runtime initialization will be placed in a read-only data section. +Olit=all
replaces the deprecated +ESlit option.
const All string literals appearing in a context where const char * is legal, and
all const-qualified variables that do not require load-time or runtime initialization
will be placed in a read-only data section. +Olit=const is mapped to
+Olit=all with a warning, except in C mode. +Olit=const replaces the
deprecated +ESconstlit option in C.
none No constants are placed in a read-only data section. +Olit=none replaces
the deprecated +ESnolit option.
+Ointeger_overflow
+Ointeger_overflow=kind
To provide the best runtime performance, the compiler makes assumptions that runtime
integer arithmetic expressions that arise in certain contexts do not overflow (produce
values that are too high or too low to represent) both expressions that are present in user
code and expressions that the compiler constructs itself. Note that if an integer arithmetic
overflow assumption is violated, runtime behavior is undefined.
72 Command-Line Options