[llvm] AMDGPU: VALU data fast-forwarding needs no s_delay (PR #205481)

[Jay Foad via llvm-commits]

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@@ -369,6 +574,7 @@ class AMDGPUInsertDelayAlu {
       // Ignore some more instructions that do not generate any code.
       switch (MI.getOpcode()) {
       case AMDGPU::SI_RETURN_TO_EPILOG:
+      case AMDGPU::S_SETPC_B64_return:
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jayfoad wrote:

What is this for?

https://github.com/llvm/llvm-project/pull/205481