[llvm] [RISCV] Mark QC Instructions for Relaxation (PR #188671)

[Sam Elliott via llvm-commits]

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@@ -594,6 +594,9 @@ void RISCVPassConfig::addPreEmitPass2() {
   }
   addPass(createRISCVExpandPseudoPass());
 
+  // Add QC Relaxation Markers as late as possible.
+  addPass(createRISCVQCRelaxMarkingPass());
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lenary wrote:

That's a good call. Will do

https://github.com/llvm/llvm-project/pull/188671