P

padding of structures(6.5.2.1) The padding and alignment of members of structures.

page size, setting for stack or heap-xpagesize=n

PARALLEL Environment Variables

parallelization

  See alsoOpenMP

Parallelizing C Code

checking for properly parallelized loops with -xvpara-xvpara

creating a program database with -Zll-Zll

environment variables for Environment Variables

finding parallelized loops with -xloopinfo-xloopinfo

specifying OpenMP pragmas with -xopenmp-xopenmp[={parallel|noopt|none}]

turning on reduction recognition with -xreduction-xreduction

turning on with -xautopar for multiple processors-xautopar

pass, name and version of each-V

PEC: Portable Executable Codexpec[={yes|no}]

Pentium-xtarget Expansions on x86

performance

optimizing for SPARCPerformance Tuning

optimizing with -fast-fast

optimizing with-xO-xO[1|2|3|4|5]

portability checks performed by lint

Portability Checks

Portability Checks

portability, of code

Portability Checks

Portability Checks

POSIX threads-mt[={yes|no}]

postopt (C compiler)Components of the C Compilation System

pragmas

Using Pragmas for Finer Control

Pragmas

#pragma alias#pragma alias (type, type [, type]…)

#pragma alias_level#pragma alias_level level (list)

#pragma alignalign

#pragma c99c99

#pragma does_not_read_global_datadoes_not_read_global_data

#pragma does_not_returndoes_not_return

#pragma does_not_write_global_datadoes_not_write_global_data

#pragma dumpmacrosdumpmacros

#pragma end_dumpmacrosend_dumpmacros

#pragma error_messageserror_messages

#pragma finifini

#pragma hdrstophdrstop

#pragma identident

#pragma initinit

#pragma inlineinline

#pragma int_to_unsignedint_to_unsigned

#pragma may_not_point_to#pragma may_not_point_to (pointer, variable [, variable]…)

#pragma may_point_to#pragma may_point_to (pointer, variable [, variable]…)

#pragma must_have_framemust_have_frame

#pragma no_inlineinline

#pragma no_side_effect

opt

no_side_effect

#pragma noalias

#pragma noalias (pointer, pointer [, pointer]…)

#pragma noalias (type, type [, type]…)

#pragma nomemorydependnomemorydepend

#pragma optopt

#pragma packpack

#pragma pipelooppipeloop

#pragma rarely_calledrarely_called

#pragma redefine_extnameredefine_extname

#pragma returns_new_memoryreturns_new_memory

#pragma unknown_control_flowunknown_control_flow

#pragma unrollunroll

#pragma warn_missing_parameter_infowarn_missing_parameter_info

#pragma weakweak

preassertions for -AnameAname[(tokens)]

precompiled-header file-xpch=v

prefetch-xprefetch[=val[,val]]

preprocessing

Token Pasting

Tokenization and Preprocessing

directives

Preprocessing Directives (G.3.13)

-Dname[(arg[,arg])][=expansion]

How to Specify Include Files

How to Specify Include Files

Predefined Identifier __STDC__

how to preserve comments-C

predefined names

Predefined Identifier __STDC__

Predefined Names

stringizingUsing Strings

token pastingToken Pasting

preserving signedness of chars-xchar[=o]

printf functionLibrary Functions (J.3.12)

printing

(5.2.2) The direction of printing:

Printing long long Data Types

profiling

-xprofile–xprofile=p

programming tools for CC-Related Programming Tools

promotion

Example: Integral Constants

Promotions: Unsigned Versus Value Preserving

bit-fieldsExample: The Use of a Cast

default argumentsMixing Considerations

integral constantsIntegral Constants

unsigned versus value preservingSome Background History