[CIR] Add missing testcase for previous commit

Author: bcardosolopes

clang/test/CIR/CodeGen/global-new.cpp

@@ -0,0 +1,29 @@
+// RUN: %clang_cc1 -triple x86_64-unknown-linux-gnu -fclangir -emit-cir -mmlir --mlir-print-ir-before=cir-lowering-prepare %s -o %t.cir 2>&1 | FileCheck %s -check-prefix=CIR_BEFORE
+// RUN: FileCheck %s -check-prefix=CIR_AFTER --input-file=%t.cir
+// RUN: %clang_cc1 -triple x86_64-unknown-linux-gnu -fclangir -emit-llvm %s -o %t.ll
+// RUN: FileCheck %s -check-prefix=LLVM --input-file=%t.ll
+
+struct e { e(int); };
+e *g = new e(0);
+
+// CIR_BEFORE: ![[ty:.*]] = !cir.struct<struct "e" {!cir.int<u, 8>}
+
+// CIR_BEFORE: cir.global  external @g = ctor : !cir.ptr<![[ty]]> {
+// CIR_BEFORE:     %[[GlobalAddr:.*]] = cir.get_global @g : !cir.ptr<!cir.ptr<![[ty]]>>
+// CIR_BEFORE:     %[[Size:.*]] = cir.const #cir.int<1> : !u64i
+// CIR_BEFORE:     %[[NewAlloc:.*]] = cir.call @_Znwm(%[[Size]]) : (!u64i) -> !cir.ptr<!void>
+// CIR_BEFORE:     %[[NewCasted:.*]] = cir.cast(bitcast, %[[NewAlloc]] : !cir.ptr<!void>), !cir.ptr<![[ty]]>
+// CIR_BEFORE:     %[[ZERO:.*]] = cir.const #cir.int<0> : !s32i
+// CIR_BEFORE:     cir.call @_ZN1eC1Ei(%[[NewCasted]], %[[ZERO]]) : (!cir.ptr<![[ty]]>, !s32i) -> ()
+// CIR_BEFORE:     cir.store %3, %[[GlobalAddr]] : !cir.ptr<![[ty]]>, !cir.ptr<!cir.ptr<![[ty]]>>
+// CIR_BEFORE: }
+
+// CIR_AFTER:  {{%.*}} = cir.const #cir.int<1> : !u64i
+// CIR_AFTER:  {{%.*}} = cir.call @_Znwm(%1) : (!u64i) -> !cir.ptr<!void>
+
+// LLVM-DAG: @llvm.global_ctors = appending constant [1 x { i32, ptr, ptr }] [{ i32, ptr, ptr } { i32 65536, ptr @__cxx_global_var_init, ptr null }]
+// LLVM: define internal void @__cxx_global_var_init()
+// LLVM: call ptr @_Znwm(i64 1)
+
+// LLVM: define void @_GLOBAL__sub_I_global_new.cpp()
+// LLVM:   call void @__cxx_global_var_init()