SW006015 Microchip Technology, SW006015 Datasheet - Page 42

• Manufacturer Part Number: SW006015
• Description: C COMPILER MPLAB C32
• Manufacturer: Microchip Technology
• Type: Compilerr
• Series: PIC32r

Specifications of SW006015

• Supported Families: PIC32MX5, MX6, And MX7
• Core Architecture: PIC
• Kit Contents: Software And Docs
• Mcu Supported Families: PIC32 MCUs
• Tool Function: Compiler
• Supported Devices: PIC32 MCUs
• Tool Type: Compiler
• Processor Series: PIC32
• Lead Free Status / RoHS Status: Not applicable / Not applicable
• For Use With/related Products: PIC32
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

DS51686A-page 38
®
1.8.11
Options of the form -fflag specify machine-independent flags. Most flags have both
positive and negative forms. The negative form of -ffoo would be -fno-foo. In the
table below, only one of the forms is listed (the one that is not the default.)
TABLE 1-15:
-fargument-alias
-fargument-noalias
-fargument-
-fcall-saved-reg
-fcall-used-reg
-ffixed-reg
noalias-global
Option
Options for Code Generation Conventions
CODE GENERATION CONVENTION OPTIONS
Specify the possible relationships among parameters and between
parameters and global data.
-fargument-alias specifies that arguments (parameters) may
alias each other and may alias global storage.
-fargument-noalias specifies that arguments do not alias
each other, but may alias global storage.
-fargument-noalias-global specifies that arguments do not
alias each other and do not alias global storage.
Each language automatically uses whatever option is required by
the language standard. You should not need to use these options
yourself.
Treat the register named reg as an allocatable register saved by
functions. It may be allocated even for temporaries or variables
that live across a call. Functions compiled this way saves and
restores the register reg if they use it.
It is an error to used this flag with the Frame Pointer or Stack
Pointer. Use of this flag for other registers that have fixed
pervasive roles in the machine’s execution model produces
disastrous results.
A different sort of disaster results from the use of this flag for a
register in which function values are returned.
This flag should be used consistently through all modules.
Treat the register named reg as an allocatable register that is
clobbered by function calls. It may be allocated for temporaries or
variables that do not live across a call. Functions compiled this way
do not save and restore the register reg.
It is an error to use this flag with the Frame Pointer or Stack
Pointer. Use of this flag for other registers that have fixed
pervasive roles in the machine’s execution model produces
disastrous results.
This flag should be used consistently through all modules.
Treat the register named reg as a fixed register. Generated code
should never refer to it (except perhaps as a Stack Pointer, Frame
Pointer or in some other fixed role).
reg must be the name of a register, e.g., -ffixed-$0.
Definition
© 2007 Microchip Technology Inc.