[llvm] RuntimeLibcalls: Split lowering decisions into LibcallLoweringInfo (PR #164987)

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``````````bash
git-clang-format --diff origin/main HEAD --extensions cpp,h -- llvm/include/llvm/CodeGen/LibcallLoweringInfo.h llvm/lib/CodeGen/LibcallLoweringInfo.cpp llvm/include/llvm/CodeGen/TargetLowering.h llvm/include/llvm/IR/RuntimeLibcalls.h llvm/lib/CodeGen/TargetLoweringBase.cpp llvm/lib/IR/RuntimeLibcalls.cpp llvm/lib/LTO/LTO.cpp llvm/lib/Target/WebAssembly/WebAssemblyRuntimeLibcallSignatures.cpp llvm/lib/Transforms/Utils/DeclareRuntimeLibcalls.cpp llvm/utils/TableGen/Basic/RuntimeLibcallsEmitter.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/include/llvm/CodeGen/LibcallLoweringInfo.h b/llvm/include/llvm/CodeGen/LibcallLoweringInfo.h
index 4cc1c4ca0..190954320 100644
--- a/llvm/include/llvm/CodeGen/LibcallLoweringInfo.h
+++ b/llvm/include/llvm/CodeGen/LibcallLoweringInfo.h
@@ -1,4 +1,5 @@
-//===- LibcallLoweringInfo.h ---------------------------------------*- C++ -*-===//
+//===- LibcallLoweringInfo.h ---------------------------------------*- C++
+//-*-===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
 // See https://llvm.org/LICENSE.txt for license information.

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https://github.com/llvm/llvm-project/pull/164987