LLVM/Clang 3.0 On Intel Sandy Bridge
Benchmarking GCC and LLVM on an Intel Core i7 2630QM Sandy Bridge notebook from ZaReason for a future article on Phoronix.


GCC 4.6.1: 

	Processor: Intel Core i7-2630QM @ 2.00GHz (8 Cores), Motherboard: Compal PBL21, Chipset: Intel 2nd Generation Core Family, Memory: 8192MB, Disk: 128GB Super Talent STT_FTM28G225H, Graphics: NVIDIA GeForce GT 540M 2048MB (672/900MHz), Audio: Realtek ALC259, Network: Realtek RTL8111/8168B + Atheros AR9285 Wireless

	OS: Ubuntu 11.10, Kernel: 3.0.0-12-generic (x86_64), Desktop: Unity 4.22.0, Display Server: X Server 1.10.4, Display Driver: NVIDIA 280.13, OpenGL: 4.1.0 NVIDIA 280.13, Compiler: GCC 4.6.1, File-System: ext4, Screen Resolution: 1920x1080

LLVM-Clang 2.9: 

	Processor: Intel Core i7-2630QM @ 2.00GHz (8 Cores), Motherboard: Compal PBL21, Chipset: Intel 2nd Generation Core Family, Memory: 8192MB, Disk: 128GB Super Talent STT_FTM28G225H, Graphics: NVIDIA GeForce GT 540M 2048MB (672/900MHz), Audio: Realtek ALC259, Network: Realtek RTL8111/8168B + Atheros AR9285 Wireless

	OS: Ubuntu 11.10, Kernel: 3.0.0-12-generic (x86_64), Desktop: Unity 4.22.0, Display Server: X Server 1.10.4, Display Driver: NVIDIA 280.13, OpenGL: 4.1.0 NVIDIA 280.13, Compiler: Clang 4.2.1, File-System: ext4, Screen Resolution: 1920x1080

LLVM-Clang 3.0 SVN: 

	Processor: Intel Core i7-2630QM @ 2.00GHz (8 Cores), Motherboard: Compal PBL21, Chipset: Intel 2nd Generation Core Family, Memory: 8192MB, Disk: 128GB Super Talent STT_FTM28G225H, Graphics: NVIDIA GeForce GT 540M 2048MB (672/900MHz), Audio: Realtek ALC259, Network: Realtek RTL8111/8168B + Atheros AR9285 Wireless

	OS: Ubuntu 11.10, Kernel: 3.0.0-12-generic (x86_64), Desktop: Unity 4.22.0, Display Server: X Server 1.10.4, Display Driver: NVIDIA 280.13, OpenGL: 4.1.0 NVIDIA 280.13, Compiler: Clang 4.2.1, File-System: ext4, Screen Resolution: 1920x1080


Apache Benchmark 2.2.17
Static Web Page Serving
Requests Per Second > Higher Is Better
GCC 4.6.1 .......... 15740.72 |==================================
LLVM-Clang 2.9 ..... 22393.19 |================================================
LLVM-Clang 3.0 SVN . 22322.59 |================================================


C-Ray 1.1
Total Time
Seconds < Lower Is Better
GCC 4.6.1 .......... 71.60 |===================================================
LLVM-Clang 2.9 ..... 69.98 |==================================================
LLVM-Clang 3.0 SVN . 65.11 |==============================================


Smallpt 1.0
Global Illumination Renderer; 100 Samples
Seconds < Lower Is Better
GCC 4.6.1 .......... 143 |===========
LLVM-Clang 2.9 ..... 676 |=====================================================
LLVM-Clang 3.0 SVN . 614 |================================================


POV-Ray 3.6.1
Total Time
Seconds < Lower Is Better
GCC 4.6.1 . 904 |==============================================================


TSCP 1.81
AI Chess Performance
Nodes Per Second > Higher Is Better
GCC 4.6.1 .......... 411520 |================================================
LLVM-Clang 2.9 ..... 421989 |==================================================
LLVM-Clang 3.0 SVN . 425913 |==================================================


LAME MP3 Encoding 3.98.2
WAV To MP3
Seconds < Lower Is Better
GCC 4.6.1 .......... 24.71 |================================================
LLVM-Clang 2.9 ..... 26.42 |===================================================
LLVM-Clang 3.0 SVN . 25.76 |==================================================


FLAC Audio Encoding 1.2.1
WAV To FLAC
Seconds < Lower Is Better
GCC 4.6.1 .......... 8.00 |==============================================
LLVM-Clang 2.9 ..... 8.87 |===================================================
LLVM-Clang 3.0 SVN . 8.97 |====================================================


x264 2010-11-22
H.264 Video Encoding
Frames Per Second > Higher Is Better
GCC 4.6.1 ...... 78.15 |=======================================================
LLVM-Clang 2.9 . 75.43 |=====================================================


OpenSSL 1.0.0a
RSA 4096-bit Performance
Signs Per Second > Higher Is Better
GCC 4.6.1 .......... 67.13 |===================================================
LLVM-Clang 2.9 ..... 66.95 |===================================================
LLVM-Clang 3.0 SVN . 67.30 |===================================================


John The Ripper 1.7.8
Test: Traditional DES
Real C/S > Higher Is Better
GCC 4.6.1 .......... 3473000 |=============================================
LLVM-Clang 2.9 ..... 3738333 |=================================================
LLVM-Clang 3.0 SVN . 3744667 |=================================================


John The Ripper 1.7.8
Test: MD5
Real C/S > Higher Is Better
GCC 4.6.1 .......... 11087 |===================================================
LLVM-Clang 2.9 ..... 10338 |================================================
LLVM-Clang 3.0 SVN . 10346 |================================================


John The Ripper 1.7.8
Test: Blowfish
Real C/S > Higher Is Better
GCC 4.6.1 .......... 713 |=====================================================
LLVM-Clang 2.9 ..... 678 |==================================================
LLVM-Clang 3.0 SVN . 637 |===============================================


7-Zip Compression 9.13
Compress Speed Test
MIPS > Higher Is Better
GCC 4.6.1 . 12904 |============================================================