[llvm] Reland [InstCombine] Teach foldSelectOpOp about samesign (PR #124320)

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github-actions[bot] wrote:

<!--LLVM CODE FORMAT COMMENT: {clang-format}-->


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``````````bash
git-clang-format --diff a976036a100b7dd459b6cabac96159875fcd513d 47843304a45e513701fa51aa641c97b036dbde0b --extensions cpp -- llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp
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View the diff from clang-format here.
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``````````diff
diff --git a/llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp b/llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp
index 6357824077..4c78c0e74d 100644
--- a/llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp
+++ b/llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp
@@ -431,8 +431,8 @@ Instruction *InstCombinerImpl::foldSelectOpOp(SelectInst &SI, Instruction *TI,
       auto P = CmpPredicate::getMatching(TPred, FPred);
       bool Swapped = !P;
       if (Swapped)
-        P = CmpPredicate::getMatching(
-            TPred, ICmpInst::getSwappedCmpPredicate(FPred));
+        P = CmpPredicate::getMatching(TPred,
+                                      ICmpInst::getSwappedCmpPredicate(FPred));
       if (P) {
         if (Value *MatchOp =
                 getCommonOp(TI, FI, ICmpInst::isEquality(*P), Swapped)) {

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https://github.com/llvm/llvm-project/pull/124320