1. Computers
  2. Display Drivers
  3. Graphics Cards
  4. Memory
  5. Motherboards
  6. Processors
  7. Software
  8. Storage
  9. Operating Systems


Facebook RSS Twitter Twitter Google Plus


Phoronix Test Suite

OpenBenchmarking.org

Testing LLVM Clang 3.5's Code Generation Optimizations

Michael Larabel

Published on 28 June 2014
Written by Michael Larabel
Page 1 of 5 - 3 Comments

For those curious about the performance of LLVM Clang in its current development form when testing the common code generation options for optimizing the performance (and in some cases size) of the resulting binaries, here's some fresh compiler benchmarks.

Just as some extra benchmarks for the weekend while finishing out the month, I ran some new benchmarks comparing common optimization levels for LLVM/Clang with the latest 3.5 development code as of earlier this month. The configurations tested for this article included:

-O0
-O1
-O2
-Os
-Oz
-O3
-Ofast
-O3 -march=native

There aren't any breakthrough changes with the code generation optimizations for Clang 3.5 on x86_64, but simply here's some fresh benchmark results with an array of open-source C/C++ tests done from an Intel Core i7 4790K Devil's Canyon system running Ubuntu 14.04 with the Linux 3.16 development kernel. The code generation options were controlled through the CFLAGS/CXXFLAGS.

Take these reference compiler results as you wish or feel free to run your own compiler benchmarks using the Phoronix Test Suite.

<< Previous Page
1
Latest Linux Hardware Reviews
  1. CompuLab Intense-PC2: An Excellent, Fanless, Mini PC Powered By Intel's i7 Haswell
  2. From The Atom 330 To Haswell ULT: Intel Linux Performance Benchmarks
  3. AMD Radeon R9 285 Tonga Performance On Linux
  4. Apotop Wi-Copy
Latest Linux Articles
  1. AMD Moves Forward With Unified Linux Driver Strategy, New Kernel Driver
  2. MSI: Update Your BIOS From The Linux Desktop
  3. NVIDIA vs. AMD 2D Linux Drivers: Catalyst Is Getting Quite Good At 2D
  4. 15-Way GPU Comparison With Mesa 10.3 + Linux 3.17
Latest Linux News
  1. Ubuntu 15.04 Is Codenamed After A Monkey: Vivid Vervet
  2. Following GCC, Clang Looks To Default To C11
  3. Users/Developers Threatening Fork Of Debian GNU/Linux
  4. Linux 3.18-rc1 Released One Week Early With Many Changes
  5. The VC4 Gallium3D Driver Is Still Moving Along For The Raspberry Pi
  6. Direct3D 9 Support Might Land Within Mainline Mesa 3D Drivers
  7. OpenGL Preview Benchmarks For NVIDIA's GeForce GTX 970
  8. HOPE: The Ease Of Python With The Speed Of C++
  9. Vitesse: Using LLVM To Speed Up Databases
  10. AMD Is Restructuring Again, Losing 7% Of Employees
Latest Forum Discussions
  1. NVIDIA Presents Its Driver Plans To Support Mir/Wayland & KMS On Linux
  2. AMD Is Restructuring Again, Losing 7% Of Employees
  3. Bye bye BSD, Hello Linux: A Sys Admin's Story
  4. Open-Source AMD Fusion E-350 Support Takes A Dive
  5. Upgrade to Kaveri, very slow VDPAU performance
  6. ChromeOS Drops Support For EXT2/EXT3/EXT4 File-Systems
  7. Lennart Poettering On The Open-Source Community: A Sick Place To Be In
  8. The Slides Announcing The New "AMDGPU" Kernel Driver