[llvm] [TII][X86] Do not schedule frame-setup/frame-destory instructions (PR #96611)

[Shengchen Kan via llvm-commits]

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@@ -8832,6 +8832,11 @@ bool X86InstrInfo::isSchedulingBoundary(const MachineInstr &MI,
       Opcode == X86::PLDTILECFGV)
     return true;
 
+  // Frame setup and destory can't be scheduled around.
+  if (MI.getFlag(MachineInstr::FrameSetup) ||
+      MI.getFlag(MachineInstr::FrameDestroy))
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KanRobert wrote:

Should we put it in TargetInstrInfo::isSchedulingBoundary?

https://github.com/llvm/llvm-project/pull/96611