[llvm] [AMDGPU][True16][MC] true16 for minimummaximum/max/min/max3/min3 (PR #124184)

[Matt Arsenault via llvm-commits]

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@@ -7566,6 +7568,28 @@ void SIInstrInfo::moveToVALUImpl(SIInstrWorklist &Worklist,
     Inst.eraseFromParent();
     return;
   }
+  case AMDGPU::S_MINIMUM_F16:
+  case AMDGPU::S_MAXIMUM_F16: {
+    const DebugLoc &DL = Inst.getDebugLoc();
+    Register NewDst;
+    if (ST.useRealTrue16Insts())
+      NewDst = MRI.createVirtualRegister(&AMDGPU::VGPR_16RegClass);
+    else
+      NewDst = MRI.createVirtualRegister(&AMDGPU::VGPR_32RegClass);
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arsenm wrote:

Could also query the result register class from get(NewOpcodes)'s operand 

https://github.com/llvm/llvm-project/pull/124184