Intel® oneAPI DPC++/C++ Compiler

Developer Guide and Reference

ID 767253
Date 6/30/2025
Public
Document Table of Contents

vec-assume-index-overflow, Qvec-assume-index-overflow

Toggles between modes, with the less conservative mode as the default.

Syntax

Linux:

-vec-assume-index-overflow

-no-vec-assume-index-overflow

Windows:

/Qvec-assume-index-overflow

/Qvec-assume-index-overflow-

Arguments

None

Default

Less conservative mode

This option toggles between modes, leaving the less conservative mode on by default.

Description

When this option is set, assume overflow of integer indices may happen, disabling additional optimization of loads and stores.

IDE Equivalent

None

Alternate Options

None

Examples

The following shows examples of using this option.

Linux

icpx -O2 -c -fno-vec-assume-index-overflow test.cpp -o test.o
icpx -O2 -c -fvec-assume-index-overflow test.cpp -o test.o