[LLVM][CodeGen][AArch64] Remove bogus lowering of sve_while{gt/ge/hi/hs} intrinsics. (#88126)

When fed constant operands we try to lower WHILE intrinsics to PTRUE
using a fixed length pattern. This is not valid for the decrementing
variants of WHILE because they construct their result predicate vector
by traversing from high->low lanes whereas the incrementing variants and
PTRUE traverse from low->high lanes.

Whilst we can still utilise PTRUE by reversing its result I figure
replacing a single WHILE with multiple SVE instructions is likely
counterproductive.

0 files changed, 0 insertions, 0 deletions