[clang] [llvm] [AMDGPU] Emit a waitcnt instruction after each memory instruction (PR #79236)

[Pierre van Houtryve via llvm-commits]

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@@ -603,14 +626,69 @@ class SIGfx12CacheControl : public SIGfx11CacheControl {
                                       SIAtomicAddrSpace AddrSpace, SIMemOp Op,
                                       bool IsVolatile,
                                       bool IsNonTemporal) const override;
+
+  bool
+  handleNonAtomicForPreciseMemory(MachineBasicBlock::iterator &MI) override;
+  bool handleAtomicForPreciseMemory(MachineBasicBlock::iterator &MI,
+                                    bool ret) override;
+};
+
+#if 0
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Pierre-vh wrote:

Remove code in `#if 0`

https://github.com/llvm/llvm-project/pull/79236