C/C++ Programmer's Guide (G06.27+, H06.08+, J06.03+)

If you specify the OLDCALLS pragma, the TNS C compiler generates code for function parameters
such that the parameters are stacked with the last parameter first and the first parameter last.
Versions of the TNS C compiler released prior to C00 behave this way.
If you specify NOOLDCALLS, the TNS C compiler generates code for function parameters such that
the parameters are stacked with the first parameter first and the last parameter last. C00 and later
versions of the TNS C compiler behave this way.
The pragma default settings are:
SYSTYPE OSSSYSTYPE GUARDIAN
NOOLDCALLSNOOLDCALLSTNS C compiler
NOOLDCALLSNOOLDCALLSG-series TNS c89 utility
N.A.N.A.TNS/R native C and C++ compilers
N.A.N.A.Native c89 and c99 utilities
N.A.N.A.TNS/E native C and C++ compilers
Usage Guidelines
• The OLDCALLS pragma can be entered on the compiler RUN command line or in the source
text.
• The OLDCALLS pragma has no affect if SYSTYPE OSS is specified; the compiler ignores the
pragma.
• Versions of the TNS C compiler released with or after C00 and before D20.00 created
automatic prototypes for nonprototyped functions. Because this behavior violates the ISO/ANSI
C standard, it is no longer supported.
• The native C and C++ compilers do not support these pragmas. Native compilers do not
support B-series C language function-calling behavior.
OLIMIT
The
OLIMIT directive specifies the maximum decimal number of basic blocks of a routine that the
global optimizer is to optimize. When a routine has more basic blocks than this number, the routine
is not optimized and a warning is printed.
OLIMIT value
value
is the number of basic blocks of a routine that are to be optimized. Specify a value between
0 and 32767.
The pragma default settings are:
SYSTYPE OSSSYSTYPE GUARDIAN
N.A.N.A.TNS C compiler
N.A.N.A.G-series TNS c89 utility
Not setNot setTNS/R native C and C++ compilers
Not setNot setNative c89 utility
N.A.N.A.c99 utility
N.A.N.A.TNS/E native C and C++ compilers
OLIMIT 223