Optimizing Binary Performance with LLVM Link Time Optimization (LTO)
Learn how to break translation unit boundaries using LLVM Link Time Optimization (LTO) to reduce binary size and improve performance through cross-module inlining.
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llvmThinLTO: Faster Links Than Full LTO, Better Optimization Than -O2
Use Clang ThinLTO to get most link-time optimization benefits without full LTO's link-time and memory costs. Learn when to choose it and how to verify results.
Using Clang's -Wunused-variable to Detect Unused Declarations
Enable Clang's -Wunused-variable to catch declared‑but‑never‑read variables, see how Sema emits the diagnostic, and learn limits and silencing techniques.
semaEnabling ARM64 Memory Tagging Extension to Catch Memory Safety Bugs in C/C++
Step‑by‑step guide to enable ARM64 Memory Tagging Extension, compile a test program with -fsanitize=memtag, and verify that memory safety faults are reported via synchronous tag‑check exceptions.
Speeding Up Builds with LLVM ThinLTO: When and How to Use It
Learn how LLVM ThinLTO reduces link times while keeping most optimization benefits, with a concrete example and practical checks.
Diagnosing and Resolving LLVM Link Time Optimization (LTO) Failures
A diagnostic guide for resolving LLVM Link Time Optimization (LTO) failures, covering linker incompatibility, bitcode verification, and ThinLTO for memory management.
Understanding Clang’s Sema: How Dependent Name Resolution Shapes Template Diagnostics
Learn how Clang’s Sema resolves dependent names in templates, why it matters for diagnostics and compile time, and how to use -Wtemplate-debug to see the process.
How Clang's Sema Turned C++20 Concept Errors from Riddles into Readable Diagnostics
Older Clang reported only that a C++20 concept failed. Modern Sema walks the constraint tree and names the exact sub-expression that broke — here's what changed, with a worked example and the compile-time trade-offs.
Choosing LLVM Loop Vectorization Settings on x86-64: A Decision Guide
A decision guide to LLVM loop vectorization on x86-64: compare default, forced, and pragma-based options, then validate with optimization remarks, disassembly, and benchmarks.