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; RUN: opt -S < %s -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 { i8*, i8* }
; CHECK-LABEL: @foo() {
define internal i8* @foo() {
entry:
%call = call i8* @bar()
; CHECK: %retained1 = call i8* @llvm.objc.retainAutoreleasedReturnValue(i8* %call)
%retained1 = call i8* @llvm.objc.retain(i8* %call)
%isnull = icmp eq i8* %retained1, null
br i1 %isnull, label %cleanup, label %if.end
if.end:
; CHECK: %retained2 = call i8* @llvm.objc.retain(i8* %retained1)
%retained2 = call i8* @llvm.objc.retain(i8* %retained1)
br label %cleanup
cleanup:
%retval = phi i8* [ %retained2, %if.end ], [ null, %entry ]
ret i8* %retval
}
declare i8* @bar()
declare extern_weak i8* @llvm.objc.retain(i8*)
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