[clang] [llvm] [HLSL] implement elementwise firstbithigh hlsl builtin (PR #111082)

[Farzon Lotfi via cfe-commits]

================
@@ -2547,6 +2588,10 @@ bool SPIRVInstructionSelector::selectIntrinsic(Register 
ResVReg,
     return selectExtInst(ResVReg, ResType, I, CL::rsqrt, GL::InverseSqrt);
   case Intrinsic::spv_sign:
     return selectSign(ResVReg, ResType, I);
+  case Intrinsic::spv_firstbituhigh: // There is no CL equivalent of FindUMsb
+    return selectFirstBitHigh(ResVReg, ResType, I, false);
----------------
farzonl wrote:

```suggestion
    return selectFirstBitHigh(ResVReg, ResType, I, /*IsSigned=*/false);
```

https://github.com/llvm/llvm-project/pull/111082
_______________________________________________
cfe-commits mailing list
cfe-commits@lists.llvm.org
https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits