[LLVMbugs] [Bug 7965] No way to do a vector [reciprocal] square root

bugzilla-daemon at llvm.org bugzilla-daemon at llvm.org
Sun Aug 22 22:31:10 PDT 2010


Chris Lattner <clattner at apple.com> changed:

           What    |Removed                     |Added
             Status|NEW                         |RESOLVED
                 CC|                            |clattner at apple.com,
                   |                            |gohman at apple.com
         Resolution|                            |LATER

--- Comment #1 from Chris Lattner <clattner at apple.com> 2010-08-23 00:31:09 CDT ---
You can get this by generating the x86-specific builtin that _mm_sqrt_ps (or
any other *mminfo.h function) compiles into.  You may have some luck with
http://llvm.org/docs/LangRef.html#int_sqrt but I don't know if it has X86 or
any other target has optimized support for it.

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