Developer Guide and Reference

Contents

qopt-ra-region-strategy, Qopt-ra-region-strategy

Selects the method that the register allocator uses to partition each routine into regions.

Syntax

Linux and macOS:
-qopt-ra-region-strategy
[
=
keyword
]
Windows:
/Qopt-ra-region-strategy
[
:
keyword
]
Arguments
keyword
Is the method used for partitioning. Possible values are:
routine
Creates a single region for each routine.
block
Partitions each routine into one region per basic block.
trace
Partitions each routine into one region per trace.
loop
Partitions each routine into one region per loop.
default
The compiler determines which method is used for partitioning.
Default
-qopt-ra-region-strategy=default
or
/Qopt-ra-region-strategy:default
The compiler determines which method is used for partitioning. This is also the default if
keyword
is not specified.
Description
This option selects the method that the register allocator uses to partition each routine into regions.
When setting
default
is in effect, the compiler attempts to optimize the tradeoff between compile-time performance and generated code performance.
This option is only relevant when optimizations are enabled (option
O1
or higher).
Alternate Options
None

Product and Performance Information

1

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