llvm-project

1bbb797e - [Clang][AArch64] Add ACLE macros for FEAT_PAuth_LR (#80163)

[Clang][AArch64] Add ACLE macros for FEAT_PAuth_LR (#80163) This updates clang's target defines to include the ACLE changes covering the FEAT_PAuth_LR architecture extension. The changes include: * The new `__ARM_FEATURE_PAUTH_LR` feature macro, which is set to 1 when FEAT_PAuth_LR is available in the target. * A new bit field for the existing `__ARM_FEATURE_PAC_DEFAULT` macro, indicating the use of PC as a diversifier for Pointer Authentication (from -mbranch-protection=pac-ret+pc). The approved changes to the ACLE spec can be found here: https://github.com/ARM-software/acle/pull/292