LLVM Clang 3.1 GCC 4.7 Intel Core i7 Benchmarks Benchmarking of GCC 4.6.3, GCC 4.7.0, LLVM Clang 3.0, and LLVM Clang 3.1 SVN compilers for a future article on Phoronix.com. Compilers built all test binaries with CFLAGS/CXXFLAGS of -O3 -march=native from this Intel Core i7 Clarksfield notebook. Ubuntu 12.04 LTS x86_64 was used with the Linux 3.2 kernel. ,,"GCC 4.6.3","GCC 4.7.0","LLVM-Clang 3.0","LLVM-Clang 3.1 SVN","Open64 5.0" Processor,,Intel Core i7 720Q @ 1.60GHz (8 Cores),Intel Core i7 720Q @ 1.60GHz (8 Cores),Intel Core i7 720Q @ 1.60GHz (8 Cores),Intel Core i7 720Q @ 1.60GHz (8 Cores),Intel Core i7 720Q @ 1.60GHz (8 Cores) Motherboard,,LENOVO 4318CTO,LENOVO 4318CTO,LENOVO 4318CTO,LENOVO 4318CTO,LENOVO 4318CTO Chipset,,Intel Core DMI,Intel Core DMI,Intel Core DMI,Intel Core DMI,Intel Core DMI Memory,,4096MB,4096MB,4096MB,4096MB,4096MB Disk,,160GB INTEL SSDSA2M160,160GB INTEL SSDSA2M160,160GB INTEL SSDSA2M160,160GB INTEL SSDSA2M160,160GB INTEL SSDSA2M160 Graphics,,NVIDIA Quadro FX 880M 1024MB (405/324MHz),NVIDIA Quadro FX 880M 1024MB (405/324MHz),NVIDIA Quadro FX 880M 1024MB (405/324MHz),NVIDIA Quadro FX 880M 1024MB (405/324MHz),NVIDIA Quadro FX 880M 1024MB (405/324MHz) Audio,,Conexant CX20585,Conexant CX20585,Conexant CX20585,Conexant CX20585,Conexant CX20585 Network,,Intel 82577LM Gigabit Connection + Intel Centrino Ultimate-N 6300,Intel 82577LM Gigabit Connection + Intel Centrino Ultimate-N 6300,Intel 82577LM Gigabit Connection + Intel Centrino Ultimate-N 6300,Intel 82577LM Gigabit Connection + Intel Centrino Ultimate-N 6300,Intel 82577LM Gigabit Connection + Intel Centrino Ultimate-N 6300 OS,,Ubuntu 12.04,Ubuntu 12.04,Ubuntu 12.04,Ubuntu 12.04,Ubuntu 12.04 Kernel,,3.4.0-999-generic (x86_64),3.4.0-999-generic (x86_64),3.4.0-999-generic (x86_64),3.4.0-999-generic (x86_64),3.4.0-999-generic (x86_64) Desktop,,Unity 5.10.0,Unity 5.10.0,Unity 5.10.0,Unity 5.10.0,Unity 5.10.0 Display Server,,X Server 1.11.3,X Server 1.11.3,X Server 1.11.3,X Server 1.11.3,X Server 1.11.3 Display Driver,,nouveau 0.0.16,nouveau 0.0.16,nouveau 0.0.16,nouveau 0.0.16,nouveau 0.0.16 OpenGL,,2.1 Mesa 8.0.2 Gallium 0.4,2.1 Mesa 8.0.2 Gallium 0.4,2.1 Mesa 8.0.2 Gallium 0.4,2.1 Mesa 8.0.2 Gallium 0.4,2.1 Mesa 8.0.2 Gallium 0.4 Compiler,,GCC 4.6.3,GCC 4.7.0,Clang 3.0 + LLVM 3.0,Clang 3.1 (SVN 155295) + LLVM 3.1svn,Open64 5.0 File-System,,ext4,ext4,ext4,ext4,ext4 Screen Resolution,,1600x900,1600x900,1600x900,1600x900,1600x900 ,,"GCC 4.6.3","GCC 4.7.0","LLVM-Clang 3.0","LLVM-Clang 3.1 SVN","Open64 5.0" "FFTE - Test: N=64, 1D Complex FFT Routine (MFLOPS)",HIB,3276.19,3156.92,3270.19,3197.68,3267.81 "Timed HMMer Search - Pfam Database Search (sec)",LIB,26.52,26.63,33.02,32.63, "Timed MAFFT Alignment - Multiple Sequence Alignment (sec)",LIB,13.73,13.60,16.14,14.73, "Timed MrBayes Analysis - Primate Phylogeny Analysis (sec)",LIB,37.07,32.38,,40.09, "GMPbench - Total Time (GMPbench Score)",HIB,1739,1751.20,,, "Fhourstones - Complex Connect-4 Solving (Kpos / sec)",HIB,8643.40,8631.43,,8551.90, "BYTE Unix Benchmark - Computational Test: Dhrystone 2 (LPS)",HIB,18737961.27,18075520.17,,, "John The Ripper - Test: Blowfish (Real C/S)",HIB,2215,2211,,662, "TTSIOD 3D Renderer - Phong Rendering With Soft-Shadow Mapping (FPS)",HIB,63.32,59.50,,, "VP8 libvpx Encoding - vpxenc (FPS)",HIB,9.93,9.76,,9.07, "x264 - H.264 Video Encoding (FPS)",HIB,58.46,58.26,,, "Himeno Benchmark - Poisson Pressure Solver (MFLOPS)",HIB,1060.59,1142.97,1002.87,1053.29, "7-Zip Compression - Compress Speed Test (MIPS)",HIB,8849,8890,9108,9166, "Timed PHP Compilation - Time To Compile (sec)",LIB,50.42,54.74,,47.49, "C-Ray - Total Time (sec)",LIB,139.01,91.18,118.20,109.11, "Parallel BZIP2 Compression - 256MB File Compression (sec)",LIB,19.34,22.30,,23.21, "Smallpt - Global Illumination Renderer; 100 Samples (sec)",LIB,69,68,234,251, "Crafty - Elapsed Time (sec)",LIB,109.88,108.29,,107.85, "FLAC Audio Encoding - WAV To FLAC (sec)",LIB,9.97,9.32,,10.85, "LAME MP3 Encoding - WAV To MP3 (sec)",LIB,23.58,23.10,,23.81, "FFmpeg - AVI To NTSC VCD (sec)",LIB,15.87,15.73,,16.09, "Minion - Benchmark: Bibd (sec)",LIB,206.67,217.34,223.86,219.58, "Minion - Benchmark: Graceful (sec)",LIB,111.35,122.41,110.30,110.04, "Minion - Benchmark: Solitaire (sec)",LIB,203.00,211.57,224.90,217.96, "Minion - Benchmark: Quasigroup (sec)",LIB,255.83,253.16,277.69,262.50, "Open FMM Nero2D - Total Time (sec)",LIB,640.17,638.60,,, "Tachyon - Total Time (sec)",LIB,36.05,37.21,,36.17, "OpenSSL - RSA 4096-bit Performance (Signs/sec)",HIB,42.23,42.08,,42.08, "PostgreSQL pgbench - TPC-B Transactions Per Second (TPS)",HIB,2375.18,2405.91,,2426.91, "NGINX Benchmark - Static Web Page Serving (Reqs/sec)",HIB,15482.08,14956.30,15559.96,15767.21, "Apache Benchmark - Static Web Page Serving (Reqs/sec)",HIB,14290.99,14322.05,14867.10,14834.66,