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; RUN: opt -S -O2 < %s | FileCheck %s
; This test checks that -O2 is able to delete constructors that become empty
; only after some optimization passes have run, even if the pass structure
; changes.
; CHECK-NOT: @_GLOBAL__I_a
%class.Foo = type { i32 }
@foo = global %class.Foo zeroinitializer, align 4
@_ZN3Bar18LINKER_INITIALIZEDE = external constant i32
@llvm.global_ctors = appending global [1 x { i32, ptr, ptr }] [{ i32, ptr, ptr } { i32 65535, ptr @_GLOBAL__I_a, ptr null }]
define internal void @__cxx_global_var_init() section "__TEXT,__StaticInit,regular,pure_instructions" {
%1 = load i32, ptr @_ZN3Bar18LINKER_INITIALIZEDE, align 4
call void @_ZN3FooC1E17LinkerInitialized(ptr @foo, i32 %1)
ret void
}
; Function Attrs: ssp uwtable
define linkonce_odr void @_ZN3FooC1E17LinkerInitialized(ptr %this, i32) unnamed_addr #0 align 2 {
%2 = alloca ptr, align 8
%3 = alloca i32, align 4
store ptr %this, ptr %2, align 8
store i32 %0, ptr %3, align 4
%4 = load ptr, ptr %2
%5 = load i32, ptr %3, align 4
call void @_ZN3FooC2E17LinkerInitialized(ptr %4, i32 %5)
ret void
}
; Function Attrs: nounwind ssp uwtable
define linkonce_odr void @_ZN3FooC2E17LinkerInitialized(ptr %this, i32) unnamed_addr #1 align 2 {
%2 = alloca ptr, align 8
%3 = alloca i32, align 4
store ptr %this, ptr %2, align 8
store i32 %0, ptr %3, align 4
%4 = load ptr, ptr %2
ret void
}
define internal void @_GLOBAL__I_a() section "__TEXT,__StaticInit,regular,pure_instructions" {
call void @__cxx_global_var_init()
ret void
}
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