
Worked on the espressif/llvm-project repository to address a critical issue in AArch64 pointer authentication, focusing on correctness and runtime safety in low-level code generation. The main contribution involved fixing the ordering of Call Frame Information (CFI) and pointer authentication signing instructions to ensure compliance with the AArch64 ABI. By adjusting the placement of CFI instructions to precede signing operations, the update prevented potential runtime errors and improved ABI adherence. This work required a strong understanding of AArch64 architecture, ABI compliance, and compiler development, utilizing C++ and LLVM IR to implement and validate the solution within the compiler’s codebase.
January 2025 monthly summary for espressif/llvm-project focused on correctness and stability in low-level code paths. The main deliverable was a targeted bug fix for AArch64 Pointer Authentication CFI/Signing Instruction Ordering, which improves ABI compliance and runtime safety.
January 2025 monthly summary for espressif/llvm-project focused on correctness and stability in low-level code paths. The main deliverable was a targeted bug fix for AArch64 Pointer Authentication CFI/Signing Instruction Ordering, which improves ABI compliance and runtime safety.

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