[clang] [WIP][Clang] Add __builtin_get_counted_by builtin (PR #102549)

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<!--LLVM CODE FORMAT COMMENT: {clang-format}-->


:warning: C/C++ code formatter, clang-format found issues in your code. :warning:

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``````````bash
git-clang-format --diff bb7143f6669345825c214b26fbe336857f4bf523 197cd1c945c4b1c5cdd38d07f6ed5dd2baa96ab2 --extensions cpp,h,c -- clang/test/CodeGen/builtin-get-counted-by.c clang/test/Sema/builtin-get-counted-by.c clang/lib/CodeGen/CGBuiltin.cpp clang/lib/CodeGen/CGExpr.cpp clang/lib/CodeGen/CodeGenFunction.h clang/lib/Sema/SemaExpr.cpp
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View the diff from clang-format here.
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``````````diff
diff --git a/clang/lib/CodeGen/CGBuiltin.cpp b/clang/lib/CodeGen/CGBuiltin.cpp
index 58fc0dfe45..de46c538fd 100644
--- a/clang/lib/CodeGen/CGBuiltin.cpp
+++ b/clang/lib/CodeGen/CGBuiltin.cpp
@@ -3610,8 +3610,8 @@ RValue CodeGenFunction::EmitBuiltinExpr(const GlobalDecl GD, unsigned BuiltinID,
     if (const Expr *Ptr = MemberExprVisitor().Visit(E->getArg(0))) {
       const MemberExpr *ME = cast<MemberExpr>(Ptr);
       bool IsFlexibleArrayMember = ME->isFlexibleArrayMemberLike(
-              getContext(), getLangOpts().getStrictFlexArraysLevel(),
-              /*IgnoreTemplateOrMacroSubstitution=*/false);
+          getContext(), getLangOpts().getStrictFlexArraysLevel(),
+          /*IgnoreTemplateOrMacroSubstitution=*/false);
 
       if (!ME->HasSideEffects(getContext()) && IsFlexibleArrayMember &&
           ME->getMemberDecl()->getType()->isCountAttributedType()) {
diff --git a/clang/lib/Sema/SemaExpr.cpp b/clang/lib/Sema/SemaExpr.cpp
index 33bc71d621..3b80bcfd3a 100644
--- a/clang/lib/Sema/SemaExpr.cpp
+++ b/clang/lib/Sema/SemaExpr.cpp
@@ -6656,8 +6656,8 @@ ExprResult Sema::BuildCallExpr(Scope *Scope, Expr *Fn, SourceLocation LParenLoc,
     if (const Expr *Ptr = MemberExprVisitor().Visit(ArgExprs[0])) {
       const MemberExpr *ME = cast<MemberExpr>(Ptr);
       bool IsFlexibleArrayMember = ME->isFlexibleArrayMemberLike(
-              Context, getLangOpts().getStrictFlexArraysLevel(),
-              /*IgnoreTemplateOrMacroSubstitution=*/false);
+          Context, getLangOpts().getStrictFlexArraysLevel(),
+          /*IgnoreTemplateOrMacroSubstitution=*/false);
 
       if (!ME->HasSideEffects(Context) && IsFlexibleArrayMember &&
           ME->getMemberDecl()->getType()->isCountAttributedType()) {

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https://github.com/llvm/llvm-project/pull/102549