[llvm] [GlobalISel] Add iterative known-bits evaluation to GISelValueTracking (PR #221755)

[via llvm-commits]

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@@ -64,8 +66,9 @@ class LLVM_ABI GISelValueTracking : public GISelChangeObserver {
 
   const DataLayout &getDataLayout() const { return DL; }
 
-  void computeKnownBitsImpl(Register R, KnownBits &Known,
-                            const APInt &DemandedElts, unsigned Depth = 0);
+  virtual void computeKnownBitsImpl(Register R, KnownBits &Known,
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daemonpilot wrote:

I updated the patch based on your suggestion. Please let me know if you think any further adjustments are needed. Thanks.

https://github.com/llvm/llvm-project/pull/221755