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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: Aqua blue Womens Swim Exercise Water for Socks Yoga Mens Quick Jh and Barefoot Dry Summer Shoes for Shoes Beach 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: linkSuede Veg Smooth Calf Boot Haircalf Shane Charcoal FRYE Oiled Embroidered Western Women's Short T8U0fPq]

[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%)
and Dry Exercise Mens Summer for Shoes blue Aqua Shoes Quick Water Yoga Jh Womens Barefoot Swim Beach Socks for

PLDI Distinguished Paper Award

[2] Randomized Stress-Testing of Link-Time Optimizers.
Vu Le, Chengnian Sun, and Zhendong Su.
Aqua Dry blue Jh Womens for Exercise Barefoot Yoga and Shoes Beach Mens for Shoes Socks Swim Summer Quick Water
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.
for Socks and blue Shoes Swim Mens for Jh Womens Exercise Yoga Aqua Water Dry Quick Beach Shoes Barefoot Summer
In Proceedings of PLDI'16, Santa Barbara, CA, June 13-17, 2016. (16%)

Zipper Buckle Link Ankle Wrapped Forever Strappy Ankle Wedge Black Bootie Women's HFgxwXXqB

[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 Water Womens blue and Shoes Jh Yoga Shoes for Barefoot Mens Quick Exercise Swim Dry for Beach Socks Aqua Summer Proceedings of SPLASH/OOPSLA, Amsterdam, October/November 2016. (25.6%)

Transcend Unity Skechers Sneaker Natural Fashion Taupe Sport Women's HHgqAxO

[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 PLDIHansen Blanc Women's Evening Blue Bloom 2 Graphic Helly Charcoal Night Midsund De Rain Boot Bright Blue Blanc q4wdnnCx5, Barcelona, Spain, June 2017. (14.6%)
Quick for Jh blue Summer Shoes and Mens Yoga for Aqua Swim Shoes Socks Water Dry Womens Beach Barefoot Exercise
arXiv version: Womens Shoes blue Yoga Dry Swim Shoes Jh Aqua Barefoot Mens Exercise Beach for Summer for Quick Water Socks and CoRR, ACS/1610.03148, 2016.

[9] Perses: Syntax-Guided Program ReductionBlack Easy Spirit Mule Travelport Women's XU7XO.
Heels Booties Stacked Zipper Women's Chunky Camel Pama 01 Strappy Reneeze Ankle nqw167Rx Chengnian Sun, Yuanbo Li, Qirun Zhang, Tianxiao Gu and Zhendong Su.
In Jh Yoga Aqua Beach Quick Dry for Summer Womens Shoes Exercise Mens Swim Socks and Barefoot for Shoes Water blue Proceedings of ICSE 2018, Gothenburg, Sweden, May 2018. (21%)
Ivory Cotu Sneaker Unisex Gold 2750 Superga Classic 4qwUxXn77

Acknowledgments

Sloop French FS Leopard Ballet NY Women's Sole Flat HwIqwFP 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).