[clang] [llvm] [WIP] Expand variadic functions in IR (PR #89007)

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git-clang-format --diff c6e01627acf8591830ee1d211cff4d5388095f3d 0245f901d1abd3a0e5b859921585d250868e8e90 -- clang/test/CodeGen/expand-variadic-call.c clang/test/CodeGen/variadic-wrapper-removal.c clang/test/CodeGenCXX/inline-then-fold-variadics.cpp llvm/include/llvm/Transforms/IPO/ExpandVariadics.h llvm/lib/Transforms/IPO/ExpandVariadics.cpp clang/lib/CodeGen/ABIInfoImpl.cpp clang/lib/CodeGen/Targets/AMDGPU.cpp clang/lib/CodeGen/Targets/NVPTX.cpp llvm/include/llvm/InitializePasses.h llvm/lib/Passes/PassBuilder.cpp llvm/lib/Passes/PassBuilderPipelines.cpp llvm/lib/Target/AMDGPU/AMDGPUTargetMachine.cpp llvm/lib/Target/NVPTX/NVPTXTargetMachine.cpp
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diff --git a/llvm/include/llvm/Transforms/IPO/ExpandVariadics.h b/llvm/include/llvm/Transforms/IPO/ExpandVariadics.h
index 64704fa7fc..c55f3f6f16 100644
--- a/llvm/include/llvm/Transforms/IPO/ExpandVariadics.h
+++ b/llvm/include/llvm/Transforms/IPO/ExpandVariadics.h
@@ -18,9 +18,9 @@ class OptimizationLevel;
 
 enum class ExpandVariadicsMode {
   Unspecified, // Use the implementation defaults
-  Disable, // Disable the pass entirely
-  Optimize, // Optimise without changing ABI
-  Lowering, // Change variadic calling convention
+  Disable,     // Disable the pass entirely
+  Optimize,    // Optimise without changing ABI
+  Lowering,    // Change variadic calling convention
 };
 
 class ExpandVariadicsPass : public PassInfoMixin<ExpandVariadicsPass> {

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https://github.com/llvm/llvm-project/pull/89007