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      1 ; RUN: opt -S -objc-arc-contract < %s | FileCheck %s
      2 
      3 ; The optimizer should be able to move the autorelease past a control triangle
      4 ; and various scary looking things and fold it into an objc_retainAutorelease.
      5 
      6 ; CHECK: bb57:
      7 ; CHECK: tail call i8* @objc_retainAutorelease(i8* %tmp71x) [[NUW:#[0-9]+]]
      8 ; CHECK: bb99:
      9 
     10 target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64"
     11 target triple = "x86_64-apple-darwin11.0.0"
     12 
     13 %0 = type { i8* (i8*, %1*, ...)*, i8* }
     14 %1 = type { i8*, i8* }
     15 %2 = type { %2*, %2*, %3*, i8* (i8*, i8*)**, %4* }
     16 %3 = type opaque
     17 %4 = type { i32, i32, i32, i8*, i8*, %5*, %7*, %10*, i8*, %9* }
     18 %5 = type { i32, i32, [0 x %6] }
     19 %6 = type { i8*, i8*, i8* }
     20 %7 = type { i64, [0 x %8*] }
     21 %8 = type { i8*, i8*, %7*, %5*, %5*, %5*, %5*, %9*, i32, i32 }
     22 %9 = type { i32, i32, [0 x %1] }
     23 %10 = type { i32, i32, [0 x %11] }
     24 %11 = type { i64*, i8*, i8*, i32, i32 }
     25 %12 = type { i32*, i32, i8*, i64 }
     26 %13 = type opaque
     27 %14 = type opaque
     28 %15 = type opaque
     29 %16 = type opaque
     30 %17 = type opaque
     31 %18 = type opaque
     32 %19 = type opaque
     33 %20 = type opaque
     34 %21 = type opaque
     35 %22 = type opaque
     36 %23 = type opaque
     37 %24 = type opaque
     38 %25 = type opaque
     39 
     40 @"\01l_objc_msgSend_fixup_alloc" = external hidden global %0, section "__DATA, __objc_msgrefs, coalesced", align 16
     41 @"\01L_OBJC_SELECTOR_REFERENCES_8" = external hidden global i8*, section "__DATA, __objc_selrefs, literal_pointers, no_dead_strip"
     42 @"\01L_OBJC_SELECTOR_REFERENCES_3725" = external hidden global i8*, section "__DATA, __objc_selrefs, literal_pointers, no_dead_strip"
     43 @"\01L_OBJC_CLASSLIST_REFERENCES_$_40" = external hidden global %2*, section "__DATA, __objc_classrefs, regular, no_dead_strip", align 8
     44 @"\01L_OBJC_SELECTOR_REFERENCES_4227" = external hidden global i8*, section "__DATA, __objc_selrefs, literal_pointers, no_dead_strip"
     45 @"\01L_OBJC_SELECTOR_REFERENCES_4631" = external hidden global i8*, section "__DATA, __objc_selrefs, literal_pointers, no_dead_strip"
     46 @"\01L_OBJC_CLASSLIST_REFERENCES_$_70" = external hidden global %2*, section "__DATA, __objc_classrefs, regular, no_dead_strip", align 8
     47 @"\01L_OBJC_SELECTOR_REFERENCES_148" = external hidden global i8*, section "__DATA, __objc_selrefs, literal_pointers, no_dead_strip"
     48 @"\01L_OBJC_SELECTOR_REFERENCES_159" = external hidden global i8*, section "__DATA, __objc_selrefs, literal_pointers, no_dead_strip"
     49 @"\01L_OBJC_SELECTOR_REFERENCES_188" = external hidden global i8*, section "__DATA, __objc_selrefs, literal_pointers, no_dead_strip"
     50 @"\01L_OBJC_SELECTOR_REFERENCES_328" = external hidden global i8*, section "__DATA, __objc_selrefs, literal_pointers, no_dead_strip"
     51 @"\01l_objc_msgSend_fixup_objectAtIndex_" = external hidden global %0, section "__DATA, __objc_msgrefs, coalesced", align 16
     52 @_unnamed_cfstring_386 = external hidden constant %12, section "__DATA,__cfstring"
     53 @"\01l_objc_msgSend_fixup_count" = external hidden global %0, section "__DATA, __objc_msgrefs, coalesced", align 16
     54 @"\01L_OBJC_SELECTOR_REFERENCES_389" = external hidden global i8*, section "__DATA, __objc_selrefs, literal_pointers, no_dead_strip"
     55 @"\01L_OBJC_SELECTOR_REFERENCES_391" = external hidden global i8*, section "__DATA, __objc_selrefs, literal_pointers, no_dead_strip"
     56 @"\01L_OBJC_SELECTOR_REFERENCES_393" = external hidden global i8*, section "__DATA, __objc_selrefs, literal_pointers, no_dead_strip"
     57 @NSPrintHeaderAndFooter = external constant %13*
     58 @"\01L_OBJC_SELECTOR_REFERENCES_395" = external hidden global i8*, section "__DATA, __objc_selrefs, literal_pointers, no_dead_strip"
     59 @"\01L_OBJC_CLASSLIST_REFERENCES_$_396" = external hidden global %2*, section "__DATA, __objc_classrefs, regular, no_dead_strip", align 8
     60 @"\01L_OBJC_SELECTOR_REFERENCES_398" = external hidden global i8*, section "__DATA, __objc_selrefs, literal_pointers, no_dead_strip"
     61 @"\01L_OBJC_SELECTOR_REFERENCES_400" = external hidden global i8*, section "__DATA, __objc_selrefs, literal_pointers, no_dead_strip"
     62 @"\01L_OBJC_SELECTOR_REFERENCES_402" = external hidden global i8*, section "__DATA, __objc_selrefs, literal_pointers, no_dead_strip"
     63 @"\01L_OBJC_SELECTOR_REFERENCES_404" = external hidden global i8*, section "__DATA, __objc_selrefs, literal_pointers, no_dead_strip"
     64 @"\01L_OBJC_SELECTOR_REFERENCES_406" = external hidden global i8*, section "__DATA, __objc_selrefs, literal_pointers, no_dead_strip"
     65 @"\01L_OBJC_SELECTOR_REFERENCES_408" = external hidden global i8*, section "__DATA, __objc_selrefs, literal_pointers, no_dead_strip"
     66 @"\01L_OBJC_CLASSLIST_REFERENCES_$_409" = external hidden global %2*, section "__DATA, __objc_classrefs, regular, no_dead_strip", align 8
     67 @"\01L_OBJC_SELECTOR_REFERENCES_411" = external hidden global i8*, section "__DATA, __objc_selrefs, literal_pointers, no_dead_strip"
     68 @"\01L_OBJC_SELECTOR_REFERENCES_413" = external hidden global i8*, section "__DATA, __objc_selrefs, literal_pointers, no_dead_strip"
     69 @"\01L_OBJC_SELECTOR_REFERENCES_415" = external hidden global i8*, section "__DATA, __objc_selrefs, literal_pointers, no_dead_strip"
     70 
     71 declare i8* @objc_msgSend(i8*, i8*, ...)
     72 
     73 declare i8* @objc_retain(i8*)
     74 
     75 declare void @objc_release(i8*)
     76 
     77 declare i8* @objc_autorelease(i8*)
     78 
     79 declare i8* @objc_explicit_autorelease(i8*)
     80 
     81 define hidden %14* @foo(%15* %arg, %16* %arg2) {
     82 bb:
     83   %tmp = load i8** @"\01L_OBJC_SELECTOR_REFERENCES_3725", align 8
     84   %tmp4 = bitcast %15* %arg to i8*
     85   %tmp5 = tail call %18* bitcast (i8* (i8*, i8*, ...)* @objc_msgSend to %18* (i8*, i8*)*)(i8* %tmp4, i8* %tmp)
     86   %tmp6 = bitcast %18* %tmp5 to i8*
     87   %tmp7 = tail call i8* @objc_retain(i8* %tmp6) nounwind
     88   %tmp8 = load %2** @"\01L_OBJC_CLASSLIST_REFERENCES_$_40", align 8
     89   %tmp9 = load i8** @"\01L_OBJC_SELECTOR_REFERENCES_4227", align 8
     90   %tmp10 = bitcast %2* %tmp8 to i8*
     91   %tmp11 = tail call %19* bitcast (i8* (i8*, i8*, ...)* @objc_msgSend to %19* (i8*, i8*)*)(i8* %tmp10, i8* %tmp9)
     92   %tmp12 = load i8** @"\01L_OBJC_SELECTOR_REFERENCES_4631", align 8
     93   %tmp13 = bitcast %19* %tmp11 to i8*
     94   %tmp14 = tail call signext i8 bitcast (i8* (i8*, i8*, ...)* @objc_msgSend to i8 (i8*, i8*, %13*)*)(i8* %tmp13, i8* %tmp12, %13* bitcast (%12* @_unnamed_cfstring_386 to %13*))
     95   %tmp15 = bitcast %16* %arg2 to i8*
     96   %tmp16 = load i8** bitcast (%0* @"\01l_objc_msgSend_fixup_count" to i8**), align 16
     97   %tmp17 = bitcast i8* %tmp16 to i64 (i8*, %1*)*
     98   %tmp18 = tail call i64 %tmp17(i8* %tmp15, %1* bitcast (%0* @"\01l_objc_msgSend_fixup_count" to %1*))
     99   %tmp19 = icmp eq i64 %tmp18, 0
    100   br i1 %tmp19, label %bb22, label %bb20
    101 
    102 bb20:                                             ; preds = %bb
    103   %tmp21 = icmp eq i8 %tmp14, 0
    104   br label %bb25
    105 
    106 bb22:                                             ; preds = %bb
    107   %tmp23 = bitcast i8* %tmp7 to %18*
    108   %tmp24 = icmp eq i8 %tmp14, 0
    109   br i1 %tmp24, label %bb46, label %bb25
    110 
    111 bb25:                                             ; preds = %bb22, %bb20
    112   %tmp26 = phi i1 [ %tmp21, %bb20 ], [ false, %bb22 ]
    113   %tmp27 = load i8** @"\01L_OBJC_SELECTOR_REFERENCES_188", align 8
    114   %tmp28 = tail call i8* bitcast (i8* (i8*, i8*, ...)* @objc_msgSend to i8* (i8*, i8*)*)(i8* %tmp7, i8* %tmp27)
    115   %tmp29 = tail call i8* @objc_explicit_autorelease(i8* %tmp28) nounwind
    116   %tmp30 = bitcast i8* %tmp29 to %18*
    117   tail call void @objc_release(i8* %tmp7) nounwind
    118   %tmp31 = load i8** @"\01L_OBJC_SELECTOR_REFERENCES_389", align 8
    119   %tmp32 = tail call %20* bitcast (i8* (i8*, i8*, ...)* @objc_msgSend to %20* (i8*, i8*)*)(i8* %tmp29, i8* %tmp31)
    120   %tmp33 = load i8** @"\01L_OBJC_SELECTOR_REFERENCES_391", align 8
    121   %tmp34 = bitcast %20* %tmp32 to i8*
    122   tail call void bitcast (i8* (i8*, i8*, ...)* @objc_msgSend to void (i8*, i8*, %16*)*)(i8* %tmp34, i8* %tmp33, %16* %arg2)
    123   br i1 %tmp26, label %bb46, label %bb35
    124 
    125 bb35:                                             ; preds = %bb25
    126   %tmp36 = load i8** @"\01L_OBJC_SELECTOR_REFERENCES_389", align 8
    127   %tmp37 = tail call %20* bitcast (i8* (i8*, i8*, ...)* @objc_msgSend to %20* (i8*, i8*)*)(i8* %tmp29, i8* %tmp36)
    128   %tmp38 = load %2** @"\01L_OBJC_CLASSLIST_REFERENCES_$_70", align 8
    129   %tmp39 = load i8** @"\01L_OBJC_SELECTOR_REFERENCES_393", align 8
    130   %tmp40 = bitcast %2* %tmp38 to i8*
    131   %tmp41 = tail call %21* bitcast (i8* (i8*, i8*, ...)* @objc_msgSend to %21* (i8*, i8*, i8)*)(i8* %tmp40, i8* %tmp39, i8 signext 1)
    132   %tmp42 = bitcast %21* %tmp41 to i8*
    133   %tmp43 = load %13** @NSPrintHeaderAndFooter, align 8
    134   %tmp44 = load i8** @"\01L_OBJC_SELECTOR_REFERENCES_159", align 8
    135   %tmp45 = bitcast %20* %tmp37 to i8*
    136   tail call void bitcast (i8* (i8*, i8*, ...)* @objc_msgSend to void (i8*, i8*, i8*, %13*)*)(i8* %tmp45, i8* %tmp44, i8* %tmp42, %13* %tmp43)
    137   br label %bb46
    138 
    139 bb46:                                             ; preds = %bb35, %bb25, %bb22
    140   %tmp47 = phi %18* [ %tmp30, %bb35 ], [ %tmp30, %bb25 ], [ %tmp23, %bb22 ]
    141   %tmp48 = load i8** @"\01L_OBJC_SELECTOR_REFERENCES_328", align 8
    142   %tmp49 = tail call %22* bitcast (i8* (i8*, i8*, ...)* @objc_msgSend to %22* (i8*, i8*)*)(i8* %tmp4, i8* %tmp48)
    143   %tmp50 = bitcast %22* %tmp49 to i8*
    144   %tmp51 = load i8** bitcast (%0* @"\01l_objc_msgSend_fixup_count" to i8**), align 16
    145   %tmp52 = bitcast i8* %tmp51 to i64 (i8*, %1*)*
    146   %tmp53 = tail call i64 %tmp52(i8* %tmp50, %1* bitcast (%0* @"\01l_objc_msgSend_fixup_count" to %1*))
    147   %tmp54 = icmp eq i64 %tmp53, 0
    148   br i1 %tmp54, label %bb55, label %bb57
    149 
    150 bb55:                                             ; preds = %bb46
    151   %tmp56 = load i8** @"\01L_OBJC_SELECTOR_REFERENCES_395", align 8
    152   tail call void bitcast (i8* (i8*, i8*, ...)* @objc_msgSend to void (i8*, i8*)*)(i8* %tmp4, i8* %tmp56)
    153   br label %bb57
    154 
    155 bb57:                                             ; preds = %bb55, %bb46
    156   %tmp58 = load %2** @"\01L_OBJC_CLASSLIST_REFERENCES_$_396", align 8
    157   %tmp59 = load i8** @"\01L_OBJC_SELECTOR_REFERENCES_328", align 8
    158   %tmp60 = tail call %22* bitcast (i8* (i8*, i8*, ...)* @objc_msgSend to %22* (i8*, i8*)*)(i8* %tmp4, i8* %tmp59)
    159   %tmp61 = bitcast %22* %tmp60 to i8*
    160   %tmp62 = load i8** bitcast (%0* @"\01l_objc_msgSend_fixup_objectAtIndex_" to i8**), align 16
    161   %tmp63 = bitcast i8* %tmp62 to i8* (i8*, %1*, i64)*
    162   %tmp64 = tail call i8* %tmp63(i8* %tmp61, %1* bitcast (%0* @"\01l_objc_msgSend_fixup_objectAtIndex_" to %1*), i64 0)
    163   %tmp65 = load i8** @"\01L_OBJC_SELECTOR_REFERENCES_398", align 8
    164   %tmp66 = tail call i8* bitcast (i8* (i8*, i8*, ...)* @objc_msgSend to i8* (i8*, i8*)*)(i8* %tmp64, i8* %tmp65)
    165   %tmp67 = bitcast i8* %tmp66 to %23*
    166   %tmp68 = load i8** @"\01L_OBJC_SELECTOR_REFERENCES_400", align 8
    167   %tmp69 = bitcast %2* %tmp58 to i8*
    168   %tmp70 = tail call %14* bitcast (i8* (i8*, i8*, ...)* @objc_msgSend to %14* (i8*, i8*, %23*, %18*)*)(i8* %tmp69, i8* %tmp68, %23* %tmp67, %18* %tmp47)
    169   %tmp71 = bitcast %14* %tmp70 to i8*
    170   ; hack to prevent the optimize from using objc_retainAutoreleasedReturnValue.
    171   %tmp71x = getelementptr i8* %tmp71, i64 1
    172   %tmp72 = tail call i8* @objc_retain(i8* %tmp71x) nounwind
    173   %tmp73 = load i8** @"\01L_OBJC_SELECTOR_REFERENCES_402", align 8
    174   tail call void bitcast (i8* (i8*, i8*, ...)* @objc_msgSend to void (i8*, i8*, i8)*)(i8* %tmp72, i8* %tmp73, i8 signext 1)
    175   %tmp74 = load i8** @"\01L_OBJC_SELECTOR_REFERENCES_404", align 8
    176   tail call void bitcast (i8* (i8*, i8*, ...)* @objc_msgSend to void (i8*, i8*, i8)*)(i8* %tmp72, i8* %tmp74, i8 signext 1)
    177   %tmp75 = load i8** @"\01L_OBJC_SELECTOR_REFERENCES_328", align 8
    178   %tmp76 = tail call %22* bitcast (i8* (i8*, i8*, ...)* @objc_msgSend to %22* (i8*, i8*)*)(i8* %tmp4, i8* %tmp75)
    179   %tmp77 = bitcast %22* %tmp76 to i8*
    180   %tmp78 = load i8** bitcast (%0* @"\01l_objc_msgSend_fixup_objectAtIndex_" to i8**), align 16
    181   %tmp79 = bitcast i8* %tmp78 to i8* (i8*, %1*, i64)*
    182   %tmp80 = tail call i8* %tmp79(i8* %tmp77, %1* bitcast (%0* @"\01l_objc_msgSend_fixup_objectAtIndex_" to %1*), i64 0)
    183   %tmp81 = load i8** @"\01L_OBJC_SELECTOR_REFERENCES_406", align 8
    184   tail call void bitcast (i8* (i8*, i8*, ...)* @objc_msgSend to void (i8*, i8*, i64)*)(i8* %tmp80, i8* %tmp81, i64 9223372036854775807)
    185   %tmp82 = load i8** @"\01L_OBJC_SELECTOR_REFERENCES_408", align 8
    186   %tmp83 = tail call %24* bitcast (i8* (i8*, i8*, ...)* @objc_msgSend to %24* (i8*, i8*)*)(i8* %tmp72, i8* %tmp82)
    187   %tmp84 = bitcast %24* %tmp83 to i8*
    188   %tmp85 = tail call i8* @objc_retain(i8* %tmp84) nounwind
    189   %tmp86 = load %2** @"\01L_OBJC_CLASSLIST_REFERENCES_$_409", align 8
    190   %tmp87 = bitcast %2* %tmp86 to i8*
    191   %tmp88 = load i8** bitcast (%0* @"\01l_objc_msgSend_fixup_alloc" to i8**), align 16
    192   %tmp89 = bitcast i8* %tmp88 to i8* (i8*, %1*)*
    193   %tmp90 = tail call i8* %tmp89(i8* %tmp87, %1* bitcast (%0* @"\01l_objc_msgSend_fixup_alloc" to %1*))
    194   %tmp91 = load i8** @"\01L_OBJC_SELECTOR_REFERENCES_8", align 8
    195   %tmp92 = tail call i8* bitcast (i8* (i8*, i8*, ...)* @objc_msgSend to i8* (i8*, i8*)*)(i8* %tmp90, i8* %tmp91)
    196   %tmp93 = tail call i8* @objc_explicit_autorelease(i8* %tmp92) nounwind
    197   %tmp94 = bitcast i8* %tmp93 to %25*
    198   %tmp95 = load i8** @"\01L_OBJC_SELECTOR_REFERENCES_411", align 8
    199   tail call void bitcast (i8* (i8*, i8*, ...)* @objc_msgSend to void (i8*, i8*, %25*)*)(i8* %tmp85, i8* %tmp95, %25* %tmp94)
    200   tail call void @objc_release(i8* %tmp93) nounwind
    201   %tmp96 = load i8** @"\01L_OBJC_SELECTOR_REFERENCES_148", align 8
    202   %tmp97 = tail call signext i8 bitcast (i8* (i8*, i8*, ...)* @objc_msgSend to i8 (i8*, i8*)*)(i8* %tmp4, i8* %tmp96)
    203   %tmp98 = icmp eq i8 %tmp97, 0
    204   br i1 %tmp98, label %bb99, label %bb104
    205 
    206 bb99:                                             ; preds = %bb57
    207   %tmp100 = load i8** @"\01L_OBJC_SELECTOR_REFERENCES_413", align 8
    208   %tmp101 = tail call i64 bitcast (i8* (i8*, i8*, ...)* @objc_msgSend to i64 (i8*, i8*)*)(i8* %tmp85, i8* %tmp100)
    209   %tmp102 = or i64 %tmp101, 12
    210   %tmp103 = load i8** @"\01L_OBJC_SELECTOR_REFERENCES_415", align 8
    211   tail call void bitcast (i8* (i8*, i8*, ...)* @objc_msgSend to void (i8*, i8*, i64)*)(i8* %tmp85, i8* %tmp103, i64 %tmp102)
    212   br label %bb104
    213 
    214 bb104:                                            ; preds = %bb99, %bb57
    215   %tmp105 = call i8* @objc_autorelease(i8* %tmp72) nounwind
    216   %tmp106 = bitcast i8* %tmp105 to %14*
    217   tail call void @objc_release(i8* %tmp85) nounwind
    218   %tmp107 = bitcast %18* %tmp47 to i8*
    219   tail call void @objc_release(i8* %tmp107) nounwind
    220   ret %14* %tmp106
    221 }
    222 
    223 ; CHECK: attributes [[NUW]] = { nounwind }
    224