1; RUN: opt -S -O2 < %s | FileCheck %s 2 3; This test checks that -O2 is able to delete constructors that become empty 4; only after some optimization passes have run, even if the pass structure 5; changes. 6; CHECK-NOT: @_GLOBAL__I_a 7 8%class.Foo = type { i32 } 9 10@foo = global %class.Foo zeroinitializer, align 4 11@_ZN3Bar18LINKER_INITIALIZEDE = external constant i32 12@llvm.global_ctors = appending global [1 x { i32, ptr, ptr }] [{ i32, ptr, ptr } { i32 65535, ptr @_GLOBAL__I_a, ptr null }] 13 14define internal void @__cxx_global_var_init() section "__TEXT,__StaticInit,regular,pure_instructions" { 15 %1 = load i32, ptr @_ZN3Bar18LINKER_INITIALIZEDE, align 4 16 call void @_ZN3FooC1E17LinkerInitialized(ptr @foo, i32 %1) 17 ret void 18} 19 20; Function Attrs: ssp uwtable 21define linkonce_odr void @_ZN3FooC1E17LinkerInitialized(ptr %this, i32) unnamed_addr #0 align 2 { 22 %2 = alloca ptr, align 8 23 %3 = alloca i32, align 4 24 store ptr %this, ptr %2, align 8 25 store i32 %0, ptr %3, align 4 26 %4 = load ptr, ptr %2 27 %5 = load i32, ptr %3, align 4 28 call void @_ZN3FooC2E17LinkerInitialized(ptr %4, i32 %5) 29 ret void 30} 31 32; Function Attrs: nounwind ssp uwtable 33define linkonce_odr void @_ZN3FooC2E17LinkerInitialized(ptr %this, i32) unnamed_addr #1 align 2 { 34 %2 = alloca ptr, align 8 35 %3 = alloca i32, align 4 36 store ptr %this, ptr %2, align 8 37 store i32 %0, ptr %3, align 4 38 %4 = load ptr, ptr %2 39 ret void 40} 41 42define internal void @_GLOBAL__I_a() section "__TEXT,__StaticInit,regular,pure_instructions" { 43 call void @__cxx_global_var_init() 44 ret void 45} 46