[llvm-bugs] [Bug 48718] New: NEON scalar comparison functions should return unsigned values

via llvm-bugs llvm-bugs at lists.llvm.org
Mon Jan 11 09:59:17 PST 2021


https://bugs.llvm.org/show_bug.cgi?id=48718

            Bug ID: 48718
           Summary: NEON scalar comparison functions should return
                    unsigned values
           Product: new-bugs
           Version: 11.0
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: P
         Component: new bugs
          Assignee: unassignedbugs at nondot.org
          Reporter: clang at evan.coeusgroup.com
                CC: htmldeveloper at gmail.com, llvm-bugs at lists.llvm.org

Some functions which compare 64-bit values return int64_t in clang instead of
uint64_t.  For example, documentation for vceqd_s64 (which returns int64_t in
clang):
https://developer.arm.com/architectures/instruction-sets/simd-isas/neon/intrinsics?search=vceqd_s64

I ran into this issue with vceqd_s64, but the other comparison functions seem
to share the same problem:

 * vceqd_s64
 * vceqzd_s64
 * vcged_s64
 * vcgezd_s64
 * vcgtd_s64
 * vcgtzd_s64
 * vcled_s64
 * vclezd_s64
 * vcltd_s64
 * vcltzd_s64

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