[llvm] [ConstraintElim] Optimize usub.sat intrinsic based on known constraints (PR #135744)

[via llvm-commits]

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``````````bash
git-clang-format --diff HEAD~1 HEAD --extensions cpp -- llvm/lib/Transforms/Scalar/ConstraintElimination.cpp
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View the diff from clang-format here.
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``````````diff
diff --git a/llvm/lib/Transforms/Scalar/ConstraintElimination.cpp b/llvm/lib/Transforms/Scalar/ConstraintElimination.cpp
index 6af5d2c1c..f426c4ca9 100644
--- a/llvm/lib/Transforms/Scalar/ConstraintElimination.cpp
+++ b/llvm/lib/Transforms/Scalar/ConstraintElimination.cpp
@@ -1133,7 +1133,7 @@ void State::addInfoFor(BasicBlock &BB) {
     case Intrinsic::smin:
     case Intrinsic::smax:
     case Intrinsic::usub_sat:
-    // TODO: handle llvm.abs as well
+      // TODO: handle llvm.abs as well
       WorkList.push_back(
           FactOrCheck::getCheck(DT.getNode(&BB), cast<CallInst>(&I)));
       // TODO: Check if it is possible to instead only added the min/max facts

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https://github.com/llvm/llvm-project/pull/135744