[llvm] [clang] [clang] Support per-function [[clang::code_align(N)]] attribute. (PR #80765)

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``````````bash
git-clang-format --diff a7bc9cb6ffa91ff0ebabc45c0c7263c7c2c3a4de ff8cf4e87473dec2e3f55114cb92ae5a63d9488c -- clang/test/CodeGen/code_align_function.c clang/lib/CodeGen/CodeGenModule.cpp clang/lib/Sema/SemaDeclAttr.cpp clang/test/Sema/code_align.c llvm/lib/CodeGen/MachineBlockPlacement.cpp
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View the diff from clang-format here.
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``````````diff
diff --git a/llvm/lib/CodeGen/MachineBlockPlacement.cpp b/llvm/lib/CodeGen/MachineBlockPlacement.cpp
index ba4f161ef3..90e3c91707 100644
--- a/llvm/lib/CodeGen/MachineBlockPlacement.cpp
+++ b/llvm/lib/CodeGen/MachineBlockPlacement.cpp
@@ -3499,7 +3499,8 @@ bool MachineBlockPlacement::runOnMachineFunction(MachineFunction &MF) {
     // specific alignment.
     for (auto MBI = std::next(MF.begin()), MBE = MF.end(); MBI != MBE; ++MBI) {
       auto LayoutPred = std::prev(MBI);
-      unsigned MaxAlignment = std::max(1ULL << AlignAllNonFallThruBlocks, MBBAlignment);
+      unsigned MaxAlignment =
+          std::max(1ULL << AlignAllNonFallThruBlocks, MBBAlignment);
       if (!LayoutPred->isSuccessor(&*MBI)) {
         if (HasMaxBytesOverride)
           MBI->setAlignment(std::max(Align(MaxAlignment), MBI->getAlignment()),

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https://github.com/llvm/llvm-project/pull/80765