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1; RUN: opt -S -O2 < %s | FileCheck %s2 3; This test checks that -O2 is able to delete constructors that become empty4; only after some optimization passes have run, even if the pass structure5; changes.6; CHECK-NOT: @_GLOBAL__I_a7 8%class.Foo = type { i32 }9 10@foo = global %class.Foo zeroinitializer, align 411@_ZN3Bar18LINKER_INITIALIZEDE = external constant i3212@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 416 call void @_ZN3FooC1E17LinkerInitialized(ptr @foo, i32 %1)17 ret void18}19 20; Function Attrs: ssp uwtable21define linkonce_odr void @_ZN3FooC1E17LinkerInitialized(ptr %this, i32) unnamed_addr #0 align 2 {22 %2 = alloca ptr, align 823 %3 = alloca i32, align 424 store ptr %this, ptr %2, align 825 store i32 %0, ptr %3, align 426 %4 = load ptr, ptr %227 %5 = load i32, ptr %3, align 428 call void @_ZN3FooC2E17LinkerInitialized(ptr %4, i32 %5)29 ret void30}31 32; Function Attrs: nounwind ssp uwtable33define linkonce_odr void @_ZN3FooC2E17LinkerInitialized(ptr %this, i32) unnamed_addr #1 align 2 {34 %2 = alloca ptr, align 835 %3 = alloca i32, align 436 store ptr %this, ptr %2, align 837 store i32 %0, ptr %3, align 438 %4 = load ptr, ptr %239 ret void40}41 42define internal void @_GLOBAL__I_a() section "__TEXT,__StaticInit,regular,pure_instructions" {43 call void @__cxx_global_var_init()44 ret void45}46