[Bug tree-optimization/88605] vector extensions: Widening or conversion generates inefficient or scalar code.
husseydevin at gmail dot com
Wed Jan 2 17:42:00 GMT 2019
--- Comment #4 from Devin Hussey <husseydevin at gmail dot com> ---
I also want to note that LLVM is probably a good place to look. They have been
pushing to remove as many intrinsic builtins as they can in favor of idiomatic
This has multiple advantages:
1. You can open up <emmintrin.h> and see what x intrinsic really does (many
SIMD instructions have inadequate documentation)
2. Platform independent intrinsic headers
3. More useful vector extensions
Should we make a metabug for this?
Such as "Improve vector extension pattern recognition" or something?
More information about the Gcc-bugs