HP SunSoft Pascal 4.0 Bedienungsanleitung PDF herunterladen (Seite 86)

62 Pascal 4.0 User’s Guide

-xspace

(Solaris 2.x only) The -xspace option does no optimizations that increase the

code size.

Example: Do not unroll loops.

-xtarget=t

(Solaris 2.x only) The -xtarget=t option speciﬁes the target system for the

instruction set and optimization.

t must be one of: native, generic, system-name.

The -xtarget option permits a quick and easy speciﬁcation of the -xarch,

-xchip, and -xcache combinations that occur on real systems. The only

meaning of -xtarget is in its expansion.

The performance of some programs may beneﬁt by providing the compiler

with an accurate description of the target computer hardware. When program

performance is critical, the proper speciﬁcation of the target hardware could be

Table 3-8 The -xtarget Values

Value Meaning

native Get the best performance on the host system.

The compiler generates code for the best performance on the host

system. It determines the available architecture, chip, and cache

properties of the machine on which the compiler is running.

generic Get the best performance for generic architecture, chip, and cache.

The compiler expands -xtarget=generic to:

-xarch=generic -xchip=generic -xcache=generic

This is the default value.

system-name Get the best performance for the speciﬁed system.

You select a system name from Table 3-9 that lists the mnemonic

encodings of the actual system names and numbers.

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HP SunSoft Pascal 4.0 Bedienungsanleitung Seite 86