[clang] [Clang][CodeGen] Start migrating away from assuming the Default AS is 0 (PR #88182)

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git-clang-format --diff 8795822f6ae2e82e23f7fd87a84d6d273e6c04ac 453e96aafd02bd19f44c0383acb74b930d2767c9 -- clang/test/CodeGenCXX/dynamic-cast-nonzero-default-address-space.cpp clang/test/CodeGenCXX/template-param-objects-nonzero-default-address-space.cpp clang/test/CodeGenCXX/throw-expression-typeinfo-in-nonzero-default-address-space.cpp clang/test/CodeGenCXX/try-catch-with-nonzero-default-address-space.cpp clang/test/CodeGenCXX/typeid-cxx11-with-nonzero-default-address-space.cpp clang/test/CodeGenCXX/typeid-with-nonzero-default-address-space.cpp clang/test/CodeGenCXX/typeinfo-with-nonzero-default-address-space.cpp clang/test/CodeGenCXX/vtable-align-nonzero-default-address-space.cpp clang/test/CodeGenCXX/vtable-assume-load-nonzero-default-address-space.cpp clang/test/CodeGenCXX/vtable-consteval-nonzero-default-address-space.cpp clang/test/CodeGenCXX/vtable-constexpr-nonzero-default-address-space.cpp clang/test/CodeGenCXX/vtable-key-function-nonzero-default-address-space.cpp clang/test/CodeGenCXX/vtable-layout-extreme-nonzero-default-address-space.cpp clang/test/CodeGenCXX/vtable-linkage-nonzero-default-address-space.cpp clang/test/CodeGenCXX/vtable-pointer-initialization-nonzero-default-address-space.cpp clang/test/CodeGenCXX/vtt-layout-with-nonzero-default-address-space.cpp clang/test/CodeGenCXX/vtt-nonzero-default-address-space.cpp clang/lib/CodeGen/CGExprCXX.cpp clang/lib/CodeGen/CodeGenModule.cpp clang/lib/CodeGen/CodeGenTypeCache.h clang/lib/CodeGen/ItaniumCXXABI.cpp
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View the diff from clang-format here.
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diff --git a/clang/lib/CodeGen/CodeGenModule.cpp b/clang/lib/CodeGen/CodeGenModule.cpp
index 158dca1146..8ed88b34b4 100644
--- a/clang/lib/CodeGen/CodeGenModule.cpp
+++ b/clang/lib/CodeGen/CodeGenModule.cpp
@@ -3582,10 +3582,10 @@ ConstantAddress CodeGenModule::GetAddrOfTemplateParamObject(
       isExternallyVisible(TPO->getLinkageAndVisibility().getLinkage())
           ? llvm::GlobalValue::LinkOnceODRLinkage
           : llvm::GlobalValue::InternalLinkage;
-  auto *GV = new llvm::GlobalVariable(getModule(), Init->getType(),
-                                      /*isConstant=*/true, Linkage, Init, Name,
-                                      nullptr, llvm::GlobalValue::NotThreadLocal,
-                                      GlobalsInt8PtrTy->getAddressSpace());
+  auto *GV = new llvm::GlobalVariable(
+      getModule(), Init->getType(),
+      /*isConstant=*/true, Linkage, Init, Name, nullptr,
+      llvm::GlobalValue::NotThreadLocal, GlobalsInt8PtrTy->getAddressSpace());
   setGVProperties(GV, TPO);
   if (supportsCOMDAT())
     GV->setComdat(TheModule.getOrInsertComdat(GV->getName()));
@@ -4552,10 +4552,10 @@ llvm::Constant *CodeGenModule::GetOrCreateLLVMFunction(
     IsIncompleteFunction = true;
   }
 
-  llvm::Function *F = llvm::Function::Create(
-      FTy, llvm::Function::ExternalLinkage,
-      getDataLayout().getProgramAddressSpace(),
-      Entry ? StringRef() : MangledName, &getModule());
+  llvm::Function *F =
+      llvm::Function::Create(FTy, llvm::Function::ExternalLinkage,
+                             getDataLayout().getProgramAddressSpace(),
+                             Entry ? StringRef() : MangledName, &getModule());
 
   // Store the declaration associated with this function so it is potentially
   // updated by further declarations or definitions and emitted at the end.
@@ -5025,10 +5025,9 @@ llvm::GlobalVariable *CodeGenModule::CreateOrReplaceCXXRuntimeVariable(
   }
 
   // Create a new variable.
-  GV = new llvm::GlobalVariable(getModule(), Ty, /*isConstant=*/true,
-                                Linkage, nullptr, Name, nullptr,
-                                llvm::GlobalValue::NotThreadLocal,
-                                GlobalsInt8PtrTy->getAddressSpace());
+  GV = new llvm::GlobalVariable(
+      getModule(), Ty, /*isConstant=*/true, Linkage, nullptr, Name, nullptr,
+      llvm::GlobalValue::NotThreadLocal, GlobalsInt8PtrTy->getAddressSpace());
 
   if (OldGV) {
     // Replace occurrences of the old variable if needed.
diff --git a/clang/lib/CodeGen/ItaniumCXXABI.cpp b/clang/lib/CodeGen/ItaniumCXXABI.cpp
index 942ab4c3a4..5e42e94bf3 100644
--- a/clang/lib/CodeGen/ItaniumCXXABI.cpp
+++ b/clang/lib/CodeGen/ItaniumCXXABI.cpp
@@ -3680,12 +3680,11 @@ void ItaniumRTTIBuilder::BuildVTablePointer(const Type *Ty) {
       llvm::Type *Ty = llvm::ArrayType::get(CGM.GlobalsInt8PtrTy, 0);
       // FIXME: External StdLib VTables should be constant as well, but changing
       //        it *might* constitute a very subtle ABI break.
-      VTable = new llvm::GlobalVariable(CGM.getModule(), Ty,
-                                        /*isConstant=*/false,
-                                        llvm::GlobalVariable::ExternalLinkage,
-                                        nullptr, VTableName, nullptr,
-                                        llvm::GlobalValue::NotThreadLocal,
-                                        CGM.GlobalsInt8PtrTy->getAddressSpace());
+      VTable = new llvm::GlobalVariable(
+          CGM.getModule(), Ty,
+          /*isConstant=*/false, llvm::GlobalVariable::ExternalLinkage, nullptr,
+          VTableName, nullptr, llvm::GlobalValue::NotThreadLocal,
+          CGM.GlobalsInt8PtrTy->getAddressSpace());
     }
   }
 

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https://github.com/llvm/llvm-project/pull/88182