Developer Guide and Reference

Contents

auto-p32

Instructs the compiler to analyze the program to determine if there are 64-bit pointers that can be safely shrunk to 32-bit pointers.
Architecture Restrictions
Only available on Intel® 64 architecture

Syntax

Linux and macOS:
-auto-p32
Windows:
None
Arguments
None
Default
OFF
The optimization is not performed.
Description
This option instructs the compiler to analyze and transform the program so that 64-bit pointers are shrunk to 32-bit pointers, wherever it is legal and safe to do so.
On
macOS*
systems, you must also specify option
-no-pie
for the optimization to occur.
For this option to be effective, the compiler must be able to optimize using the
-ipo
option and it must be able to analyze all library calls or external calls the program makes. This option has no effect unless you specify setting SSE3 or higher for option
-x
.
The application cannot exceed a 32-bit address space; otherwise, unpredictable results can occur.
Alternate Options
None