[llvm] [AMDGPU] selecting v_sat_pk instruction, version 2 (PR #123297)

[Matt Arsenault via llvm-commits]

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@@ -816,6 +816,13 @@ SITargetLowering::SITargetLowering(const TargetMachine &TM,
                          {MVT::v4f32, MVT::v8f32, MVT::v16f32, MVT::v32f32},
                          Custom);
     }
+
+    // Avoid true 16 instruction
+    if (!Subtarget->hasTrue16BitInsts() || !Subtarget->useRealTrue16Insts()) {
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arsenm wrote:

Needs predicate for has the instruction 

https://github.com/llvm/llvm-project/pull/123297