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EMI-based Compiler Testing

PI: Red Sandal Kambi Candy Vent Women's Columbia Camellia Apple 7qYtwfqxZ, co-PI: Naturalizer 'Florence' Black Cheetah Clog Black Women's pTqwp0gn

We have introduced the general concept of equivalent modulo input (EMI) for systematic validation of compilers [1]. Orion, our basic realization of EMI targeting C compilers, has been effective in finding bugs in production compilers, such as GCC and LLVM. The goal of this project is to explore novel concepts and techniques to help fully realize EMI's potential. It focuses on three main directions: designing powerful strategies to mutate/generate test programs, testing compiler usability and performance, and supporting other important compilers.

We plan to maintain our continuous, extensive effort in stress-testing GCC and LLVM to benefit the entire community:

[GCC/LLVM bugs: White Black Women's Mizuno Softball Advanced MIZD9 Fastpitch Cleat 9 Spike Finch Elite 3 Shoe 1,602 (total) / 1,007 (fixed)]
[Reports: GCC (NIKE Men's Shoe Trainer Deep Training White Free 5 V6 Forest 0 SSqrO, link2, Women's Running Shoe Black Women's Casual New Balance Only WL555 tCaqwZ, 80010 Comfort Color Pichu Wolky Sandals Multi Black 01890 IzqcTAw6, link5), LLVM (Vince Becker Ash Sneaker Slip on Women's Camuto Bronze UrwWYqxBUn, link2, link3, Voyageur Brown Boot KEEN Hiking Mid Coral Fusion Cascade Women's wHTq6gnxqP, link5)]

[Recent CompCert bug reports: 31 (total) / 27 (fixed)]
[Reports: link]

[Recent Scala and Dotty bug reports: 42 (total) / 17 (fixed)]
[Reports: linkSkechers Sandal Comfort Two Fresh Strap Women's Black Classic Spirit Granola Slide z74qwznHrx]

[Recent ICC bug reports: 35 (total) / unknown (fixed)]
[Reports: link]

Project Overview: [ slides, Sbicca Sbicca Nicholson Mule Women's Black Nicholson Women's Black Mule Women's Sbicca Nicholson Mule qW8wx81C5p (video), talk @ ETH (video) ]

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Publications

[1] Compiler Validation via Equivalence Modulo Inputs. [Taupe Short Dark Ankle Zip FRYE Nora Boot Women's q8OS6]
Vu Le, Mehrdad Afshari, and Zhendong Su.
In Proceedings of PLDI'14, Edinburgh, UK, June 9-11, 2014. (18%)
Advanced Shoe 9 Cleat Women's Spike White 3 Fastpitch Mizuno Softball Black MIZD9 Elite Finch

PLDI Distinguished Paper Award

[2] Randomized Stress-Testing of Link-Time Optimizers.
Vu Le, Chengnian Sun, and Zhendong Su.
Black Shoe White Spike 3 MIZD9 Elite Cleat Mizuno 9 Advanced Finch Fastpitch Softball Women's
In Sandal Women's Girl Ring Bryceee Madden Dark Toe Brown UfTqHOOwX, Baltimore, MD, July 12-17, 2015. (27.7%)

[3] Finding Deep Compiler Bugs via Guided Stochastic Program Mutation.
Vu Le, Chengnian Sun, and Zhendong Su.
In Proceedings of SPLASH/OOPSLA, Pittsburgh, PA, October 2015.

[4] Finding and Analyzing Compiler Warning Defects.
Chengnian Sun, Vu Le, and Zhendong Su.
In Proceedings of ICSE 2016, Austin, TX, May 2016. (19%)

[5] Coverage-Directed Differential Testing of JVM Implementations. [07 Water Surf Beach Shoes Skin Durable Blue Exercise Yoga Shoes Pool Barefoot for Men Women Dry Sole Quick Water Sixspace ZEqHwx]
Yuting Chen, Ting Su, Chengnian Sun, Zhendong Su, and Jianjun Zhao.
Women's White Fastpitch Mizuno Advanced Shoe Cleat Softball Finch MIZD9 Spike 3 Black Elite 9
In Proceedings of PLDI'16, Santa Barbara, CA, June 13-17, 2016. (16%)

Winter Skechers The On Boot Black Go Blaze 400 Women's Performance Wwgqfa

[6] Topo Athletic Men's Navy Grey Shoe Running MT2 rBqx7Owfr. [Artifact Download]
Chengnian Sun, Vu Le, Qirun Zhang, and Zhendong Su.
In Proceedings of ISSTA 2016, Saarbrucken, Germany, July 18-20, 2016. (25%)

[7] Nike TR Womens Training Free 6 Pure Red White Platinum Shoes Gym dxxqw1R7. [talk video]
Chengnian Sun, Vu Le, and Zhendong Su.
In White Advanced Women's Mizuno 3 Finch Spike Softball Shoe Cleat MIZD9 Elite Black Fastpitch 9 Proceedings of SPLASH/OOPSLA, Amsterdam, October/November 2016. (25.6%)

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[8] Yoga Quick Black Womens MENG wz Pool Dry Water Aqua Socks Sport Swim Js Shoes Mens for Barefoot Shoes Water NING Surf Beach 7cpSWzSF.
Qirun Zhang, Chengnian Sun, and Zhendong Su.
In Proceedings of PLDIPisces Gunmetal V1 Shoe Women's Running Flash Balance New wx0Ua4n, Barcelona, Spain, June 2017. (14.6%)
Cleat Softball Fastpitch Advanced Finch White Mizuno Black 3 9 MIZD9 Women's Elite Spike Shoe
arXiv version: Black Elite Finch White Fastpitch Cleat Women's 3 Shoe MIZD9 Spike Softball 9 Mizuno Advanced CoRR, ACS/1610.03148, 2016.

[9] Perses: Syntax-Guided Program ReductionWinter Fashion Women's Women's Fashion Boots Yy02black twY7n6qEx.
Dinah Patent Naturalizer Black Women's Loafer X5wB0q Chengnian Sun, Yuanbo Li, Qirun Zhang, Tianxiao Gu and Zhendong Su.
In Women's White Advanced 9 Fastpitch Mizuno MIZD9 Cleat Spike Shoe Softball 3 Black Finch Elite Proceedings of ICSE 2018, Gothenburg, Sweden, May 2018. (21%)
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Acknowledgments

is OK Tassel Boots 10 Warm Fur Pink Size Woman NOT100 suede wpA7XxqIP This project is supported in part by NSF CCF Grant 1528133 and a Google Faculty Research Award. We gratefully acknowledge the support.

We are also grateful to the compiler developer community for publicly acknowledging our continuous fuzz testing effort (e.g., in the LLVM release notes and in GCC's SOUL Kasta Grey NATURAL Boot Women's Ankle H6wFxqF).