[llvm] [RISCV] Add ORC_B to SimplifyDemandedBitsForTargetNode. (PR #141975)

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You can test this locally with the following command:
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``````````bash
git-clang-format --diff HEAD~1 HEAD --extensions cpp -- llvm/lib/Target/RISCV/RISCVISelLowering.cpp
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View the diff from clang-format here.
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``````````diff
diff --git a/llvm/lib/Target/RISCV/RISCVISelLowering.cpp b/llvm/lib/Target/RISCV/RISCVISelLowering.cpp
index 133c60955..b58f0aac5 100644
--- a/llvm/lib/Target/RISCV/RISCVISelLowering.cpp
+++ b/llvm/lib/Target/RISCV/RISCVISelLowering.cpp
@@ -20745,10 +20745,8 @@ bool RISCVTargetLowering::SimplifyDemandedBitsForTargetNode(
 
     // To compute zeros for ORC_B, we need to invert the value and invert it
     // back after. This inverting is harmless for BREV8.
-    Known.Zero =
-        ~computeGREVOrGORC(~Known2.Zero.getZExtValue(), 7, IsGORC);
-    Known.One =
-        computeGREVOrGORC(Known2.One.getZExtValue(), 7, IsGORC);
+    Known.Zero = ~computeGREVOrGORC(~Known2.Zero.getZExtValue(), 7, IsGORC);
+    Known.One = computeGREVOrGORC(Known2.One.getZExtValue(), 7, IsGORC);
     return false;
   }
   }

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https://github.com/llvm/llvm-project/pull/141975