http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57989
Bug ID: 57989
Summary: gcc for ARM defines __ARM_FEATURE_SIMD32, but does
provide SIMD32 (ARMv6) intrinsics
Product: gcc
Version: 4.8.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: maratek at gmail dot com
Created attachment 30556
--> http://gcc.gnu.org/bugzilla/attachment.cgi?id=30556&action=edit
gcc -version
ARM C language extensions specification
(http://infocenter.arm.com/help/topic/com.arm.doc.ihi0053a/IHI0053A_acle.pdf)
describes the __ARM_FEATURE_SIMD32 macro as follows: "__ARM_FEATURE_SIMD32 is
defined to 1 if the 32-bit SIMD instructions are supported and the intrinsics
defined in 9.5 are available. This also implies support for the GE global flags
which indicate byte-by-byte comparison results."
gcc 4.8 does define __ARM_FEATURE_SIMD32 when the target supports SIMD32
instructions (i.e. targeting ARMv6 or higher), but the corresponding intrinsics
are not available in gcc. As per above specification, the intrinsics should be
defined in file arm_acle.h, but gcc seems to lack this header.
