[Bug target/126444] New: Wrong type signature for some arm_neon.h intrinsics

[ktkachov at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=126444

            Bug ID: 126444
           Summary: Wrong type signature for some arm_neon.h intrinsics
           Product: gcc
           Version: 16.0
            Status: UNCONFIRMED
          Keywords: accepts-invalid
          Severity: normal
          Priority: P3
         Component: target
          Assignee: unassigned at gcc dot gnu.org
          Reporter: ktkachov at gcc dot gnu.org
  Target Milestone: ---
            Target: aarch64

The type signature for vqshlub_n_s8, vqshrunh_n_s16, vqrshrunh_n_s16,
vqshruns_n_s32, vqshrund_n_s64 in ACLE 2026Q1 defines them as returning an
unsigned value, but GCC declares them as signed. Interestingly Clang seems to
also get it wrong in the same way