[LLVMbugs] [Bug 10099] New: rsqrt_ss has wrong type

bugzilla-daemon at llvm.org bugzilla-daemon at llvm.org
Wed Jun 8 02:48:53 PDT 2011


           Summary: rsqrt_ss has wrong type
           Product: new-bugs
           Version: 2.9
          Platform: PC
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: P
         Component: new bugs
        AssignedTo: unassignedbugs at nondot.org
        ReportedBy: baldrick at free.fr
                CC: llvmbugs at cs.uiuc.edu

The rsqrtss instruction takes the reciprocal square root of a float, but LLVM
declares it as taking <4 x float>:

  def int_x86_sse_rsqrt_ss : GCCBuiltin<"__builtin_ia32_rsqrtss">,
              Intrinsic<[llvm_v4f32_ty], [llvm_v4f32_ty],

Note that it is rsqrt_ps (declared just afterwards) that operates on <4 x

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