New Options

This topic lists the options or option settings that provide new functionality in this release.

If no label appears, the option is available on all supported systems.

If "only" appears in the label, the option is only available on the identified system.

For more details on the options, refer to the individual option descriptions.

For information on conventions used in this table, see Notational Conventions.

New compiler options or option settings are listed in tables below:

Windows* Options

Description

Default

/assume

New setting [no]old_inquire_recl has been added. It determines the value of the RECL= specifier on an INQUIRE statement for an unconnected unit or a unit connected for stream access.

New setting [no]old_ldout_zero has been added. It determines the format of a floating-point zero produced by list-directed output. old_ldout_zero uses exponential format, noold_ldout_zero uses fractional format.

/assume:old_inquire_recl

/assume:old_ldout_zero

/check

New setting [no]udio_iostat has been added. It determines whether conformance checking occurs when user defined derived type input/output routines are executed.

/nocheck

-f[no-]openmp-device-lib:library

Enables or disables certain device libraries for an OpenMP* target.

OFF

/Qauto-arch

Tells the compiler to generate multiple, feature-specific auto-dispatch code paths for x86 architecture processors if there is a performance benefit.

OFF

/Qconditional-branch=keyword

Lets you identify and fix code that may be vulnerable to speculative execution side-channel attacks, which can leak your secure data as a result of bad speculation of a conditional branch direction.

/Qconditional-branch:keep

/Qopt-multiple-gather-scatter-by-shuffles[-]

Enables or disables the optimization for multiple adjacent gather/scatter type vector memory references.

varies; see the option description

Linux* and macOS* Options

Description

Default

-assume

New setting [no]old_inquire_recl has been added. It determines the value of the RECL= specifier on an INQUIRE statement for an unconnected unit or a unit connected for stream access.

New setting [no]old_ldout_zero has been added. It determines the format of a floating-point zero produced by list-directed output. old_ldout_zero uses exponential format, noold_ldout_zero uses fractional format.

-assumeold_inquire_recl

-assume old_ldout_zero

-check

New setting [no]udio_iostat has been added. It determines whether conformance checking occurs when user defined derived type input/output routines are executed.

-nocheck

-f[no-]openmp-device-lib:library

Enables or disables certain device libraries for an OpenMP* target.

OFF

-mauto-arch

Tells the compiler to generate multiple, feature-specific auto-dispatch code paths for x86 architecture processors if there is a performance benefit.

OFF

-mconditional-branch=keyword

Lets you identify and fix code that may be vulnerable to speculative execution side-channel attacks, which can leak your secure data as a result of bad speculation of a conditional branch direction.

-mconditional-branch=keep

-q[no-]opt-multiple-gather-scatter-by-shuffles

Enables or disables the optimization for multiple adjacent gather/scatter type vector memory references.

varies; see the option description

Optimization Notice

Intel's compilers may or may not optimize to the same degree for non-Intel microprocessors for optimizations that are not unique to Intel microprocessors. These optimizations include SSE2, SSE3, and SSSE3 instruction sets and other optimizations. Intel does not guarantee the availability, functionality, or effectiveness of any optimization on microprocessors not manufactured by Intel. Microprocessor-dependent optimizations in this product are intended for use with Intel microprocessors. Certain optimizations not specific to Intel microarchitecture are reserved for Intel microprocessors. Please refer to the applicable product User and Reference Guides for more information regarding the specific instruction sets covered by this notice.

Notice revision #20110804