[llvm] [AMDGPU] Allow SCC-only implicit defs and mark SOP2 SALU as rematerializable (PR #187084)

[Romanov Vlad via llvm-commits]

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@@ -197,6 +198,14 @@ class LLVM_ABI TargetInstrInfo : public MCInstrInfo {
     return false;
   }
 
+  /// Returns true if this instruction can be safely rematerialized at UseIdx
+  /// even if it has implicit physical register defs that are live.
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romanovvlad wrote:

Updated the comment.

https://github.com/llvm/llvm-project/pull/187084