[llvm] [AMDGPU] Avoid put implicit_def into bundle that break reg's liveness (PR #142563)

[Matt Arsenault via llvm-commits]

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@@ -115,6 +115,21 @@ static DebugLoc getDebugLoc(MachineBasicBlock::instr_iterator FirstMI,
   return DebugLoc();
 }
 
+static bool containRegOrSubReg(SmallSetVector<Register, 32> DefRegs,
+                               Register Reg, const TargetRegisterInfo *TRI) {
+  if (DefRegs.contains(Reg))
+    return true;
+  if (Reg.isPhysical()) {
+    for (const MCPhysReg &SubReg : TRI->subregs(Reg)) {
+      // Applying same logic with MachineVerifier that any of the SubReg is
+      // contained, it counts defined
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arsenm wrote:

Don't really need this comment 

https://github.com/llvm/llvm-project/pull/142563