[LLVMbugs] [Bug 22679] New: Implement sdiv & udiv for <4 x i16> and <8 x i8> NEON vector types.

bugzilla-daemon at llvm.org bugzilla-daemon at llvm.org
Tue Feb 24 12:01:33 PST 2015


http://llvm.org/bugs/show_bug.cgi?id=22679

            Bug ID: 22679
           Summary: Implement sdiv & udiv for <4 x i16> and <8 x i8> NEON
                    vector types.
           Product: libraries
           Version: trunk
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P
         Component: Backend: AArch64
          Assignee: unassignedbugs at nondot.org
          Reporter: mcrosier at codeaurora.org
                CC: apazos at codeaurora.org, james.molloy at arm.com,
                    liujiangning1 at gmail.com, llvmbugs at cs.uiuc.edu,
                    natebegeman at mac.com, t.p.northover at gmail.com
    Classification: Unclassified

In r125402, a custom lowering for sdiv and udiv for <4 x i16> and <8 x i8> NEON
vector types was added to the ARM backend.  This avoids moving each element to
the integer register file and calling __divsi3 etc. on it.

It would be great if we could do something similar for the AArch64 backend.

----------
Author: Nate Begeman <natebegeman at mac.com>
Date:   Fri Feb 11 15:53:29 2011

    Implement sdiv & udiv for <4 x i16> and <8 x i8> NEON vector types.
    This avoids moving each element to the integer register file and calling
__divsi3 etc. on it.


    git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125402
91177308-0d34-0410-b5e6-96231b3b80d8

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