1; RUN: opt < %s -passes=globalopt -S | FileCheck %s 2; rdar://12580965. 3; ObjC++ test case. 4 5; Make it easier to verify that alignment is correct/optimal: 6; 16-bit pointers with 32-bit ABI alignment and 128-bit preferred alignment 7 8target datalayout = "p:16:32:128" 9 10%struct.ButtonInitData = type { ptr } 11 12@_ZL14buttonInitData = internal global [1 x %struct.ButtonInitData] zeroinitializer, align 4 13 14@"\01L_OBJC_METH_VAR_NAME_40" = internal global [7 x i8] c"print:\00", section "__TEXT,__objc_methname,cstring_literals", align 1 15@"\01L_OBJC_SELECTOR_REFERENCES_41" = internal externally_initialized global ptr @"\01L_OBJC_METH_VAR_NAME_40", section "__DATA, __objc_selrefs, literal_pointers, no_dead_strip" 16 17@llvm.global_ctors = appending global [1 x { i32, ptr, ptr }] [{ i32, ptr, ptr } { i32 65535, ptr @_GLOBAL__I_a, ptr null }] 18@llvm.used = appending global [2 x ptr] [ptr @"\01L_OBJC_METH_VAR_NAME_40", ptr @"\01L_OBJC_SELECTOR_REFERENCES_41"] 19 20; Choose the preferred alignment. 21 22; CHECK: @[[_ZL14BUTTONINITDATA_0_0:[a-zA-Z0-9_$"\\.-]+]] = internal unnamed_addr global ptr null, align 16 23;. 24define internal void @__cxx_global_var_init() section "__TEXT,__StaticInit,regular,pure_instructions" { 25 %1 = load ptr, ptr @"\01L_OBJC_SELECTOR_REFERENCES_41", !invariant.load !2009 26 store ptr %1, ptr @_ZL14buttonInitData, align 4 27 ret void 28} 29 30define internal void @_GLOBAL__I_a() section "__TEXT,__StaticInit,regular,pure_instructions" { 31 call void @__cxx_global_var_init() 32 ret void 33} 34 35declare void @test(ptr) 36 37; The preferred alignment is available. 38 39define void @print() { 40; CHECK-LABEL: @print( 41; CHECK-NEXT: [[TMP1:%.*]] = load ptr, ptr @_ZL14buttonInitData.0, align 16 42; CHECK-NEXT: call void @test(ptr [[TMP1]]) 43; CHECK-NEXT: ret void 44; 45 %1 = load ptr, ptr @_ZL14buttonInitData, align 4 46 call void @test(ptr %1) 47 ret void 48} 49 50!2009 = !{} 51