Full LTO vs ThinLTO: A Clang Build Decision Guide
Decide between Full LTO and ThinLTO for Clang/LLVM builds, with version constraints, a comparison table, build commands, and validation steps.
Loading…
ReadMeFeed / Community knowledge
#lto
Real questions. Useful conversations. Find the people who know your stack.
llvmLimit GCC Link-Time Optimization Memory and Link Time in Cross-Compilation
Control GCC LTO memory and link time during cross-compilation by limiting LTO jobs and using the linker plugin, then verify with size and timing checks.
Cross-Module Inlining with GCC -flto: When Whole-Program Optimization Pays Off
GCC link-time optimization lets the compiler inline functions across separate C files and remove unused code, but it trades link time and memory for smaller binaries.
GCC Link Time Optimization: When Thin LTO Pays Off and When It Doesn't
Thin LTO gives most whole-program optimization benefits with manageable link-time cost. Enable -flto=thin -O2 on both compile and link lines, install the linker plugin, audit for latent UB, and expect 3-7% speedup on cross-file hot paths.
ThinLTO in Practice: Scaling Whole-Program Optimization Without the Memory Wall
ThinLTO splits LLVM's whole-program optimization into a fast summary phase and parallel backend workers, avoiding the memory explosion of monolithic LTO. This post shows how to integrate it into CMake/Ninja, verify cross-TU inlining, and navigate cache, debug-info, and sanitizer trade-offs.
Use GCC link-time optimization to trim release binaries
GCC's -flto lets the linker optimize across translation units, often shrinking release binaries at the cost of longer link times.
cImplementing Link Time Optimization (LTO) in GCC for Binary Size and Performance
Learn how to use GCC's Link Time Optimization (LTO) to reduce binary size and improve performance by breaking the isolation between translation units.
Reducing Binary Bloat and Latency with GCC Link Time Optimization
Stop letting translation units limit your performance. Learn how GCC's Link Time Optimization (LTO) enables cross-module inlining and global dead code elimination to shrink binaries and boost speed.
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.