[llvm-bugs] [Bug 33005] New: LLVM Cross Compile for AARCH64 failing to find ARM intrinsics

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=33005

            Bug ID: 33005
           Summary: LLVM Cross Compile for AARCH64 failing to find ARM
                    intrinsics
           Product: new-bugs
           Version: 4.0
          Hardware: PC
                OS: Windows NT
            Status: NEW
          Severity: normal
          Priority: P
         Component: new bugs
          Assignee: unassignedbugs at nondot.org
          Reporter: mboudreaux at panicbuttongames.com
                CC: llvm-bugs at lists.llvm.org

When using cross compile with an Arch of "aarch64" and feature "+neon" (or
simply setting the target CPU to cortex-a57), and providing it a simple
application that does an rsqrt will fail with the following error:

LLVM ERROR: Cannot select: intrinsic %llvm.arm.neon.vrsqrts

cortex-a57 does support that intrinsic, but it appears LLVM is looking only at
the llvm.aarch64 intrinsics table without also checking the llvm.arm table.

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