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Add __ARM_FEATURE_LSCP feature test macro #477

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Add __ARM_FEATURE_LSCP feature test macro #477

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Expand Up @@ -178,6 +178,7 @@ See [Changelog for year 2026](#changelog-for-year-2026).
* Clarified interaction between SME keyword attributes and a common compiler
extension whereby type attributes can be inherited between subsequent
duplicate decls.
* Added feature test macro `__ARM_FEATURE_LSCP` for FEAT_LSCP.

### Legacy changelog

Expand Down Expand Up @@ -1799,6 +1800,12 @@ the Armv8.1-A [[ARMARMv81]](#ARMARMv81) architecture are supported on this targe
Note: It is strongly recommended that standardized C11/C++11 atomics are used to
implement atomic operations in user code.

### Load and Store Consistency Pair instructions

`__ARM_FEATURE_LSCP` is defined to 1 if the Load and Store Consistency
Pair instructions (FEAT_LSCP) are supported on this target. It is undefined
otherwise.

### Armv8.7-A Load/Store 64 Byte extension

`__ARM_FEATURE_LS64` is defined to 1 if the Armv8.7-A `LD64B`,
Expand Down Expand Up @@ -2741,6 +2748,7 @@ be found in [[BA]](#BA).
| [`__ARM_FEATURE_IDIV`](#hardware-integer-divide) | Hardware Integer Divide | 1 |
| [`__ARM_FEATURE_JCVT`](#javascript-floating-point-conversion) | Javascript conversion (ARMv8.3-A) | 1 |
| [`__ARM_FEATURE_LDREX`](#ldrexstrex) *(Deprecated)* | Load/store exclusive instructions | 0x0F |
| [`__ARM_FEATURE_LSCP`](#load-and-store-consistency-pair-instructions) | Load and Store Consistency Pair instructions (FEAT_LSCP) | 1 |
| [`__ARM_FEATURE_LUT`](#lookup-table-extensions) | Lookup table extensions (FEAT_LUT) | 1 |
| [`__ARM_FEATURE_MATMUL_INT8`](#availability-of-armv8.6-a-integer-matrix-multiply-intrinsics) | Integer Matrix Multiply extension (Armv8.6-A, optional Armv8.2-A, Armv8.3-A, Armv8.4-A, Armv8.5-A) | 1 |
| [`__ARM_FEATURE_MEMORY_TAGGING`](#memory-tagging) | Memory Tagging (Armv8.5-A) | 1 |
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