[llvm] [clang] [Instcombine] use zext's nneg flag for icmp folding (PR #70845)

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``````````bash
git-clang-format --diff 3f906f513edea5c21867586d92151c4268230fe4 3f2ad99f9a6d177ea2747bfc0e559aad1faf8639 -- llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp
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View the diff from clang-format here.
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``````````diff
diff --git a/llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp b/llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp
index b003b65955ac..03bc0f16c893 100644
--- a/llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp
+++ b/llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp
@@ -5554,8 +5554,8 @@ Instruction *InstCombinerImpl::foldICmpWithZextOrSext(ICmpInst &ICmp) {
         return new ICmpInst(ICmp.getPredicate(), Builder.CreateOr(X, Y),
                             Constant::getNullValue(X->getType()));
 
-      // If we have mismatched casts and zext has the nneg flag, we can 
-      //  treat the "zext nneg" as "sext". Otherwise, we cannot fold and quit. 
+      // If we have mismatched casts and zext has the nneg flag, we can
+      //  treat the "zext nneg" as "sext". Otherwise, we cannot fold and quit.
 
       auto *NonNegInst0 = dyn_cast<PossiblyNonNegInst>(ICmp.getOperand(0));
       auto *NonNegInst1 = dyn_cast<PossiblyNonNegInst>(ICmp.getOperand(1));

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https://github.com/llvm/llvm-project/pull/70845