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; RUN: opt -S < %s -passes=objc-arc-expand,objc-arc-contract | FileCheck %s
; Don't crash. Reproducer for a use_iterator bug from r203364.
; rdar://problem/16333235
target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64-apple-darwin13.2.0"
%struct = type { ptr, ptr }
; CHECK-LABEL: @foo() {
define internal ptr @foo() {
entry:
%call = call ptr @bar()
; CHECK: %retained1 = call ptr @llvm.objc.retainAutoreleasedReturnValue(ptr %call)
%retained1 = call ptr @llvm.objc.retain(ptr %call)
%isnull = icmp eq ptr %retained1, null
br i1 %isnull, label %cleanup, label %if.end
if.end:
; CHECK: %retained2 = call ptr @llvm.objc.retain(ptr %retained1)
%retained2 = call ptr @llvm.objc.retain(ptr %retained1)
br label %cleanup
cleanup:
%retval = phi ptr [ %retained2, %if.end ], [ null, %entry ]
ret ptr %retval
}
declare ptr @bar()
declare extern_weak ptr @llvm.objc.retain(ptr)
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