Tag Archives: sse

Compiler Tricks to Avoid ABI-Induced Crashes

Posted on December 14, 2022 by brucedawson

Last month I wrote about an odd crash that was hitting a few Chrome users. Something was corrupting the XMM7 register and that was causing Chrome to crash. We fixed a couple of bugs in Chrome and we were able … Continue reading →

Posted in Chromium, Debugging, Investigative Reporting, Symbols | Tagged , , , | 2 Comments

Please Restore Our Registers When You’re Done With Them

Posted on November 21, 2022 by brucedawson

“Hey, you. Yes you, that function over there. When you’re cleaning up please remember to restore all of my registers. Yes, that one too – what do you think this is, Linux?” That’s the problem I was dealing with in … Continue reading →

Posted in Chromium, Debugging, Investigative Reporting, Symbols | Tagged , , | 25 Comments

VC++ /arch:AVX option – unsafe at any speed

Posted on December 5, 2016 by brucedawson

Microsoft’s VC++ compiler has an option to generate instructions for new instruction sets such as AVX and AVX2, which can lead to more efficient code when running on compatible CPUs. So, an obvious tactic is to compile critical math-heavy functions … Continue reading →

Posted in Programming, Visual Studio | Tagged , , , , | 35 Comments