[llvm] [RISCV] Implement Intrinsics Support for XCValu Extension in CV32E40P (PR #85603)

[Craig Topper via llvm-commits]

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@@ -716,6 +718,15 @@ def CV_HI5: SDNodeXForm<imm, [{
                                    N->getValueType(0));
 }]>;
 
+def powerOf2 : ImmLeaf<XLenVT, [{ return isPowerOf2_32(Imm); }]>;
+def powerOf2Minus1 : ImmLeaf<XLenVT, [{ return isPowerOf2_32(Imm+1); }]>;
+def negativePowerOf2 : ImmLeaf<XLenVT, [{ return isPowerOf2_32(-Imm); }]>;
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topperc wrote:

negativePowerOf2 appears to be unused in this patch.

https://github.com/llvm/llvm-project/pull/85603