[llvm] [AMDGPU] Use `v_cvt_pk_*` instructions for i16_f32 saturated conversions (PR #202680)

[Igor Wodiany via llvm-commits]

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@@ -3949,6 +3949,10 @@ SDValue AMDGPUTargetLowering::LowerFP_TO_INT_SAT(const SDValue Op,
   if (DstVT == MVT::i16 && SatWidth == DstWidth && SrcVT == MVT::f16)
     return Op;
 
+  if (Subtarget->hasGFX11Insts() && DstVT == MVT::i16 && SrcVT == MVT::f32 &&
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IgWod wrote:

I have removed the check and hoisted related fallback patterns from the GFX11+ guard.

https://github.com/llvm/llvm-project/pull/202680