[llvm] [InstCombine] Support multi-use values in cast elimination transforms (PR #165877)

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``````````bash
git-clang-format --diff origin/main HEAD --extensions cpp -- llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp --diff_from_common_commit
``````````

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View the diff from clang-format here.
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``````````diff
diff --git a/llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp b/llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp
index 313796ed7..d958d63d4 100644
--- a/llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp
+++ b/llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp
@@ -1003,7 +1003,8 @@ Instruction *InstCombinerImpl::visitTrunc(TruncInst &Trunc) {
     if (DestWidth * 2 < SrcWidth) {
       auto *NewDestTy = DestITy->getExtendedType();
       if (shouldChangeType(SrcTy, NewDestTy) &&
-          TypeEvaluationHelper::canEvaluateTruncated(Src, NewDestTy, *this, &Trunc)) {
+          TypeEvaluationHelper::canEvaluateTruncated(Src, NewDestTy, *this,
+                                                     &Trunc)) {
         LLVM_DEBUG(
             dbgs() << "ICE: EvaluateInDifferentType converting expression type"
                       " to reduce the width of operand of"
@@ -1464,7 +1465,8 @@ Instruction *InstCombinerImpl::visitZExt(ZExtInst &Zext) {
   // Try to extend the entire expression tree to the wide destination type.
   unsigned BitsToClear;
   if (shouldChangeType(SrcTy, DestTy) &&
-      TypeEvaluationHelper::canEvaluateZExtd(Src, DestTy, BitsToClear, *this, &Zext)) {
+      TypeEvaluationHelper::canEvaluateZExtd(Src, DestTy, BitsToClear, *this,
+                                             &Zext)) {
     assert(BitsToClear <= SrcTy->getScalarSizeInBits() &&
            "Can't clear more bits than in SrcTy");
 

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https://github.com/llvm/llvm-project/pull/165877