Build of latest commit (ed21e97)

Release highlights

The documents modified in this release are:

• Arm C Language Extensions.
• Arm Neon Intrinsics Reference.

List of changes

• Added support for modal 8-bit floating point matrix multiply-accumulate widening intrinsics.
• Added support for 16-bit floating point matrix multiply-accumulate widening intrinsics.
• Added restrictions of Function Multi Versioning’s use with other extensions.
• Upgraded Function Multi Versioning to Release support level.
• Removed _single from svmla_za16[_mf8]_vg2x1_fpm and svmla_za32[_mf8]_vg4x1_fpm.
• Improved documentation for VMLA/VMLS intrinsics for floats.
• Added support for producer-consumer data placement hints.
• Added support for range prefetch intrinsic and __ARM_PREFETCH_RANGE macro.
• Added Alpha support for SVE2.2 (FEAT_SVE2p2)
• Added Alpha support for SME2.2 (FEAT_SME2p2).
• Added Alpha support for FEAT_SVE_AES2, FEAT_SSVE_AES intrinsics.
• Added support for FEAT_FPRCVT intrinsics and __ARM_FEATURE_FPRCVT.
• Removed all references to Transactional Memory Extension (TME).
• Added Alpha support for Brain 16-bit floating-point vector multiplication intrinsics.
• Redesigned atomic store with hints intrinsics.

Release highlights

The documents modified in this release are:

• Arm C Language Extensions.

List of changes

• Added feature test macro for FEAT_SSVE_FEXPA.
• Added feature test macro for FEAT_CSSC.
• Added Function Multi Versioning feature priority syntax.

Release highlights

The documents modified in this release are:

• Arm C Language Extensions.
• Arm Neon Intrinsics Reference.

List of changes

• Changed the Function Multi Versioning default version rules to be more explicit.
• Added Alpha support for structured sparsity outer product intrinsics.
• Added Alpha support for quarter-tile outer product intrinsics.
• Removed the priority column from the mapping tables of Function Multi Versioning.
• Added Function Multi Versioning feature cssc.
• Added feature test macro for FEAT_SSVE_BitPerm.
• Upgrade to Beta support for modal 8-bit floating point intrinsics.

Release highlights

The documents modified in this release are:

• Arm C Language Extensions.
• Arm Neon Intrinsics Reference.

List of changes

• Unified Function Multi Versioning features ssbs and ssbs2.
• Unified Function Multi Versioning features memtag and memtag2.
• Unified Function Multi Versioning features aes and pmull.
• Unified Function Multi Versioning features sve2-aes and sve2-pmull128.
• Removed Function Multi Versioning features sve-bf16, sve-ebf16, and sve-i8mm.
• Removed Function Multi Versioning features ebf16, memtag3, and rpres.
• Removed Function Multi Versioning feature dgh.
• Removed Function Multi Versioning features ls64 and predres.
• Document Function Multi Versioning feature dependencies.
• Clarify Function Multi Versioning feature dependency rule.
• Simplified Function Multi Versioning version selection rules.
• Fixed range of operand o0 (too small) in AArch64 system register designations.
• Fixed SVE2.1 quadword gather load/scatter store intrinsics.
• Removed unnecessary Zd argument from svcvtnb_mf8[_f32_x2]_fpm.
• Changed name mangling of function types to include SME attributes.
• Changed __ARM_NEON_SVE_BRIDGE to refer to the availability of the arm_neon_sve_bridge.h header file, rather than the NEON-SVE bridge intrinsics.
• Removed extraneous const from SVE2.1 store intrinsics.
• Added __arm_agnostic keyword attribute.
• Refined function versioning scope and signature rules to use the default version scope and signature.
• Added _n forms of the SVE2p1 and SME2 svdot intrinsics.
• Changed the status of the SME2p1 from Alpha to Beta.
• Changed the status of the SVE2p1 from Alpha to Beta.
• Added mf8 variants of SME 2.1 intrinsics.
• Added svdot[_n_f16_mf8]_fpm and svdot[_n_f32_mf8]_fpm.
• Added Guarded Control Stack (GCS) at Beta quality level.

Release highlights

The documents modified in this release are:

• Arm C Language Extensions.
• Arm Neon Intrinsics Reference.

List of changes

• Fixed incorrect system register dependencies in Function Multi Versioning.
• Added a requirement for function version declaration in Function Multi Versioning.
• Added __FUNCTION_MULTI_VERSIONING_SUPPORT_LEVEL to indicate the support level of the Function Multi
  Versioning.
• Unified Function Multi Versioning features sha1 and sha2.
• Unified Function Multi Versioning features ls64, ls64_v, and ls64_accdata.
• Added Alpha support for SME2.1 (FEAT_SME2p1).
• Removed requirement to add preprocessor guards for header files.
• Added specifications for floating-point absolute minimum and maximum intrinsics (FEAT_FAMINMAX).
• Added specifications for table lookup intrinsics (FEAT_LUT, FEAT_SME_LUTv2).
• Added Release support level for the Custom Datapath Extension.
• Added Alpha support for modal 8-bit floating point intrinsics.
• Fixed the range of the lane immediate argument for vst2q_lane_f64.

Release highlights

The documents modified in this release are:

• Arm C Language Extensions.
• Arm®v8-M Security Extensions Requirements on Development Tools.

List of changes

• Added new content for the handling of arguments in CMSE Entry functions and return values of CMSE Nonsecure calls in order to address security issues.
• Added Alpha support for SVE2.1 (FEAT_SVE2p1).

Release highlights

The documents modified in this release are:

• Arm C Language Extensions.

List of changes

• Changed the definition of the __ARM_ACLE macro to reflect the current versioning scheme.
• Added __ARM_ACLE_VERSION to express a given ACLE version.
• Combined the SME slice_base and slice_offset arguments into a single slice argument.
• Added the Keyword attributes section.
• Changed the SME language extensions to use keyword attributes instead of GNU-style attributes.
• Added description of SVE reinterpret intrinsics.
• Changes and fixes for Function Multi Versioning:
  • Changed the mangling rules, such that feature names are appended in lexicographic order, not in priority order.
  • Mangled names contain a unique set of features (no duplicates).
  • Added MOPS.
  • Changed name mangling of the default version.
  • Aligned priorities to account for feature dependencies.
  • Introduced alternative names (aliases) rdma for rdm.
  • Corrected FEAT_BTI feature register value.
• Introduced the __ARM_FEATURE_PAUTH_LR feature macro in section Pointer Authentication to indicate target support for the Armv9.5-A PAC Enhancements.
• Introduced a new value to the __ARM_FEATURE_PAC_DEFAULT macro to indicate the use of PC as a diversifier for Pointer Authentication.
• Added a State management section, replacing the __arm_shared_za, __arm_new_za, and __arm_preserves_za attributes in the previous Alpha SME spec.
• Changed the status of the SME ACLE from Alpha to Beta.

Release highlights

The documents modified in this release are:

• Arm C Language Extensions.
• Arm Neon Intrinsics Reference.
• Armv8-M Security Extensions Requirements on Development Tools.

List of changes

• Added SLC as a valid Cache Level for the Memory prefetch intrinsics.
• Added support for 128-bit system registers, including two intrinsics for accessing them (__rsr128 and __wsr128), and a feature macro to detect if they are available (__ARM_FEATURE_SYSREG128).
• Added support for FEAT_LRCPC3 LDAP1/STL1 intrinsics and __ARM_FEATURE_RCPC.
• Corrected the mandatory architecture versions for FEAT_LRCPC and FEAT_LRCPC2.
• Corrected references to -pedantic flag.
• Fixed typos.
• Fixes for Function Multi Versioning:
  • Renamed features to sme-f64f64 and sme-i16i64
  • Corrected register name to ID_AA64SMFR0_EL1.I16I64
• Removed incorrect optimisation remark in CMSE's floating-point register clearing.
• Removed incorrect information about the floating-point ABI used in CMSE's Arguments on the stack and floating point handling.
• Corrected description and example in CMSE's section about non-secure function pointers.

Release highlights

The only document changed in this release is the main Arm C Language Extensions, at version 2022Q4.

List of changes:

1. Added Alpha support for SME.
2. Added feature detection macro __ARM_FEATURE_RCPC for RCpc (Release Consistent processor consistent) model at RCpc.
3. Added two new valid values to the SVE feature macros:
   • __ARM_FEATURE_SVE_VECTOR_OPERATORS=2.
   • __ARM_FEATURE_SVE_PREDICATE_OPERATORS=2.
4. Fixes for Function Multi Versioning:
   • Added missing features of ID_AA64ISAR1_EL1 and ID_AA64ISAR2_EL1.
   • Renamed the feature macro to __HAVE_FUNCTION_MULTI_VERSIONING.
   • Added some clarifications.