[llvm] [InstCombine] Set `samesign` when converting signed predicates into unsigned (PR #112642)

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github-actions[bot] wrote:

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``````````bash
git-clang-format --diff 566012a64e8d91dd7abca6aee0814ae293f412d5 961abf9c9774ae3f7e337831ef07c47855b5317e --extensions cpp -- 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 2c697421ca..fb6d7a72f2 100644
--- a/llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp
+++ b/llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp
@@ -6771,7 +6771,8 @@ Instruction *InstCombinerImpl::foldICmpUsingKnownBits(ICmpInst &I) {
   }
 
   // Turn a signed comparison into an unsigned one if both operands are known to
-  // have the same sign. Set samesign if possible (except for equality predicates).
+  // have the same sign. Set samesign if possible (except for equality
+  // predicates).
   if ((I.isSigned() || (I.isUnsigned() && !I.hasSameSign())) &&
       ((Op0Known.Zero.isNegative() && Op1Known.Zero.isNegative()) ||
        (Op0Known.One.isNegative() && Op1Known.One.isNegative()))) {

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https://github.com/llvm/llvm-project/pull/112642