In fact the fix to the WebRTC bug was to adjust the clobber list, thus telling the compiler to save the registers. Why the compiler didn't notice that register

In fact the fix to the WebRTC bug was to adjust the clobber list, thus telling the compiler to save the registers. Why the compiler didn't notice that registers were being used that weren't on the clobber list is unclear to me. Your suggestion seems totally reasonable. https://chromium-review.googlesource.com/c/libyuv/libyuv/+/3972137/3/source/scale_gcc.cc https://chromium-review.googlesource.com/c/libyuv/libyuv/+/3...