HP Fortran Programmer's Guide (September 2007)

An overview of HP Fortran
Back-end
Chapter 112
+DA model Generate code for a specific version of the PA-RISC architecture.
model can be one of the following:
• PA-RISC version number (1.1 or 2.0)
• A model number (for example, 750 or 870).
• One of the PA-RISC processor names (for example, PA7000,
PA7100, or PA8000).
• The word portable to generate code compatible across all
PA-RISC 1.1 and 2.0 workstations and servers.
For information about using this option, see “Compiling for
different PA-RISC machines” on page 86.
+DS model Perform instruction scheduling appropriate for a specific
implementation of the PA-RISC architecture. model can be one of
the following:
• PA-RISC version number (1.1 or 2.0)
• A model number (for example, 750 or 870).
• One of the PA-RISC processor names (for example, PA7000,
PA7100, or PA8000).
For information about using this option, see “Compiling for
different PA-RISC machines” on page 86.
On Itanium processor family architecture, the defined values for
model are:
• blended: tune for best performance on a combination of
processors (i.e., Itanium or Itanium 2 processor). This is the
Itanium architecture default.
• itanium: tune for best performance on an Itanium processor
• itanium2: tune for best performance on an Itanium 2
processor
• native: tune for best performance on the processor on which the
compiler is running.
Table 1-5 Options for controlling code generation (Continued)
Option Function