Re: [PATCH] forwprop: Fix lane handling for VEC_PERM seqence blending

2024-12-20 Thread Richard Biener
> Am 19.12.2024 um 21:47 schrieb Christoph Müllner > : > > In PR117830 a miscompilation of 464.h264ref was reported. > An analysis showed that wrong code was generated because of > unsatisfied assuptions in the code. This patch addresses > these issues. > > The first assuption was that we c

[PATCH] forwprop: Fix lane handling for VEC_PERM seqence blending

2024-12-19 Thread Christoph Müllner
In PR117830 a miscompilation of 464.h264ref was reported. An analysis showed that wrong code was generated because of unsatisfied assuptions in the code. This patch addresses these issues. The first assuption was that we can independently analyse the two vec-perms at the start of a vec-perm-simpl