1 ; RUN: llc < %s -O1 -mtriple thumbv7-apple-ios6 | FileCheck %s 2 ; Just make sure no one tries to make the assumption that the normal edge of an 3 ; invoke is never a critical edge. Previously, this code would assert. 4 5 %struct.__CFString = type opaque 6 7 declare void @bar(%struct.__CFString*, %struct.__CFString*) 8 9 define noalias i8* @foo(i8* nocapture %inRefURL) noreturn ssp personality i8* bitcast (i32 (...)* @__gxx_personality_sj0 to i8*) { 10 entry: 11 %call = tail call %struct.__CFString* @bar3() 12 %call2 = invoke i8* @bar2() 13 to label %for.cond unwind label %lpad 14 15 for.cond: ; preds = %entry, %for.cond 16 invoke void @bar(%struct.__CFString* undef, %struct.__CFString* null) 17 to label %for.cond unwind label %lpad5 18 19 lpad: ; preds = %entry 20 %0 = landingpad { i8*, i32 } 21 cleanup 22 %1 = extractvalue { i8*, i32 } %0, 0 23 %2 = extractvalue { i8*, i32 } %0, 1 24 br label %ehcleanup 25 26 lpad5: ; preds = %for.cond 27 %3 = landingpad { i8*, i32 } 28 cleanup 29 %4 = extractvalue { i8*, i32 } %3, 0 30 %5 = extractvalue { i8*, i32 } %3, 1 31 invoke void @release(i8* %call2) 32 to label %ehcleanup unwind label %terminate.lpad.i.i16 33 34 terminate.lpad.i.i16: ; preds = %lpad5 35 %6 = landingpad { i8*, i32 } 36 catch i8* null 37 tail call void @terminatev() noreturn nounwind 38 unreachable 39 40 ehcleanup: ; preds = %lpad5, %lpad 41 %exn.slot.0 = phi i8* [ %1, %lpad ], [ %4, %lpad5 ] 42 %ehselector.slot.0 = phi i32 [ %2, %lpad ], [ %5, %lpad5 ] 43 %7 = bitcast %struct.__CFString* %call to i8* 44 invoke void @release(i8* %7) 45 to label %_ZN5SmartIPK10__CFStringED1Ev.exit unwind label %terminate.lpad.i.i 46 47 terminate.lpad.i.i: ; preds = %ehcleanup 48 %8 = landingpad { i8*, i32 } 49 catch i8* null 50 tail call void @terminatev() noreturn nounwind 51 unreachable 52 53 _ZN5SmartIPK10__CFStringED1Ev.exit: ; preds = %ehcleanup 54 %lpad.val = insertvalue { i8*, i32 } undef, i8* %exn.slot.0, 0 55 %lpad.val12 = insertvalue { i8*, i32 } %lpad.val, i32 %ehselector.slot.0, 1 56 resume { i8*, i32 } %lpad.val12 57 } 58 59 declare %struct.__CFString* @bar3() 60 61 declare i8* @bar2() 62 63 declare i32 @__gxx_personality_sj0(...) 64 65 declare void @release(i8*) 66 67 declare void @terminatev() 68 69 ; Make sure that the instruction DemoteRegToStack inserts to reload 70 ; %call.i.i.i14.i.i follows the instruction that saves the value to the stack in 71 ; basic block %entry.do.body.i.i.i_crit_edge. 72 ; Previously, DemoteRegToStack would insert a load instruction into the entry 73 ; block to reload %call.i.i.i14.i.i before the phi instruction (%0) in block 74 ; %do.body.i.i.i. 75 76 ; CHECK-LABEL: __Z4foo1c: 77 ; CHECK: blx __Znwm 78 ; CHECK: {{.*}}@ %entry.do.body.i.i.i_crit_edge 79 ; CHECK: str r0, [sp, [[OFFSET:#[0-9]+]]] 80 ; CHECK: {{.*}}@ %do.body.i.i.i 81 ; CHECK: ldr [[R0:r[0-9]+]], [sp, [[OFFSET]]] 82 ; CHECK: cbz [[R0]] 83 84 %"class.std::__1::basic_string" = type { %"class.std::__1::__compressed_pair" } 85 %"class.std::__1::__compressed_pair" = type { %"class.std::__1::__libcpp_compressed_pair_imp" } 86 %"class.std::__1::__libcpp_compressed_pair_imp" = type { %"struct.std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >::__rep" } 87 %"struct.std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >::__rep" = type { %union.anon } 88 %union.anon = type { %"struct.std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >::__long" } 89 %"struct.std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >::__long" = type { i32, i32, i8* } 90 91 @.str = private unnamed_addr constant [12 x i8] c"some_string\00", align 1 92 93 define void @_Z4foo1c(i8 signext %a) personality i8* bitcast (i32 (...)* @__gxx_personality_sj0 to i8*) { 94 entry: 95 %s1 = alloca %"class.std::__1::basic_string", align 4 96 call void @_ZNSt3__112basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEE6__initEPKcm(%"class.std::__1::basic_string"* %s1, i8* getelementptr inbounds ([12 x i8], [12 x i8]* @.str, i32 0, i32 0), i32 11) 97 %call.i.i.i14.i.i = invoke noalias i8* @_Znwm(i32 1024) 98 to label %do.body.i.i.i unwind label %lpad.body 99 100 do.body.i.i.i: ; preds = %entry, %_ZNSt3__116allocator_traitsINS_9allocatorIcEEE9constructIccEEvRS2_PT_RKT0_.exit.i.i.i 101 %lsr.iv = phi i32 [ %lsr.iv.next, %_ZNSt3__116allocator_traitsINS_9allocatorIcEEE9constructIccEEvRS2_PT_RKT0_.exit.i.i.i ], [ -1024, %entry ] 102 %0 = phi i8* [ %incdec.ptr.i.i.i, %_ZNSt3__116allocator_traitsINS_9allocatorIcEEE9constructIccEEvRS2_PT_RKT0_.exit.i.i.i ], [ %call.i.i.i14.i.i, %entry ] 103 %new.isnull.i.i.i.i = icmp eq i8* %0, null 104 br i1 %new.isnull.i.i.i.i, label %_ZNSt3__116allocator_traitsINS_9allocatorIcEEE9constructIccEEvRS2_PT_RKT0_.exit.i.i.i, label %new.notnull.i.i.i.i 105 106 new.notnull.i.i.i.i: ; preds = %do.body.i.i.i 107 store i8 %a, i8* %0, align 1 108 br label %_ZNSt3__116allocator_traitsINS_9allocatorIcEEE9constructIccEEvRS2_PT_RKT0_.exit.i.i.i 109 110 _ZNSt3__116allocator_traitsINS_9allocatorIcEEE9constructIccEEvRS2_PT_RKT0_.exit.i.i.i: ; preds = %new.notnull.i.i.i.i, %do.body.i.i.i 111 %1 = phi i8* [ null, %do.body.i.i.i ], [ %0, %new.notnull.i.i.i.i ] 112 %incdec.ptr.i.i.i = getelementptr inbounds i8, i8* %1, i32 1 113 %lsr.iv.next = add i32 %lsr.iv, 1 114 %cmp.i16.i.i = icmp eq i32 %lsr.iv.next, 0 115 br i1 %cmp.i16.i.i, label %invoke.cont, label %do.body.i.i.i 116 117 invoke.cont: ; preds = %_ZNSt3__116allocator_traitsINS_9allocatorIcEEE9constructIccEEvRS2_PT_RKT0_.exit.i.i.i 118 invoke void @_Z4foo2Pci(i8* %call.i.i.i14.i.i, i32 1024) 119 to label %invoke.cont5 unwind label %lpad2 120 121 invoke.cont5: ; preds = %invoke.cont 122 %cmp.i.i.i15 = icmp eq i8* %call.i.i.i14.i.i, null 123 br i1 %cmp.i.i.i15, label %invoke.cont6, label %_ZNSt3__113__vector_baseIcNS_9allocatorIcEEE5clearEv.exit.i.i.i19 124 125 _ZNSt3__113__vector_baseIcNS_9allocatorIcEEE5clearEv.exit.i.i.i19: ; preds = %invoke.cont5 126 call void @_ZdlPv(i8* %call.i.i.i14.i.i) 127 br label %invoke.cont6 128 129 invoke.cont6: ; preds = %_ZNSt3__113__vector_baseIcNS_9allocatorIcEEE5clearEv.exit.i.i.i19, %invoke.cont5 130 %call10 = call %"class.std::__1::basic_string"* @_ZNSt3__112basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEED1Ev(%"class.std::__1::basic_string"* %s1) 131 ret void 132 133 lpad.body: ; preds = %entry 134 %2 = landingpad { i8*, i32 } 135 cleanup 136 %3 = extractvalue { i8*, i32 } %2, 0 137 %4 = extractvalue { i8*, i32 } %2, 1 138 br label %ehcleanup 139 140 lpad2: ; preds = %invoke.cont 141 %5 = landingpad { i8*, i32 } 142 cleanup 143 %6 = extractvalue { i8*, i32 } %5, 0 144 %7 = extractvalue { i8*, i32 } %5, 1 145 %cmp.i.i.i21 = icmp eq i8* %call.i.i.i14.i.i, null 146 br i1 %cmp.i.i.i21, label %ehcleanup, label %_ZNSt3__113__vector_baseIcNS_9allocatorIcEEE5clearEv.exit.i.i.i26 147 148 _ZNSt3__113__vector_baseIcNS_9allocatorIcEEE5clearEv.exit.i.i.i26: ; preds = %lpad2 149 call void @_ZdlPv(i8* %call.i.i.i14.i.i) 150 br label %ehcleanup 151 152 ehcleanup: ; preds = %_ZNSt3__113__vector_baseIcNS_9allocatorIcEEE5clearEv.exit.i.i.i26, %lpad2, %lpad.body 153 %exn.slot.0 = phi i8* [ %3, %lpad.body ], [ %6, %lpad2 ], [ %6, %_ZNSt3__113__vector_baseIcNS_9allocatorIcEEE5clearEv.exit.i.i.i26 ] 154 %ehselector.slot.0 = phi i32 [ %4, %lpad.body ], [ %7, %lpad2 ], [ %7, %_ZNSt3__113__vector_baseIcNS_9allocatorIcEEE5clearEv.exit.i.i.i26 ] 155 %call12 = invoke %"class.std::__1::basic_string"* @_ZNSt3__112basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEED1Ev(%"class.std::__1::basic_string"* %s1) 156 to label %eh.resume unwind label %terminate.lpad 157 158 eh.resume: ; preds = %ehcleanup 159 %lpad.val = insertvalue { i8*, i32 } undef, i8* %exn.slot.0, 0 160 %lpad.val13 = insertvalue { i8*, i32 } %lpad.val, i32 %ehselector.slot.0, 1 161 resume { i8*, i32 } %lpad.val13 162 163 terminate.lpad: ; preds = %ehcleanup 164 %8 = landingpad { i8*, i32 } 165 catch i8* null 166 %9 = extractvalue { i8*, i32 } %8, 0 167 call void @__clang_call_terminate(i8* %9) 168 unreachable 169 } 170 171 declare void @_Z4foo2Pci(i8*, i32) 172 173 define linkonce_odr hidden void @__clang_call_terminate(i8*) { 174 %2 = tail call i8* @__cxa_begin_catch(i8* %0) 175 tail call void @_ZSt9terminatev() 176 unreachable 177 } 178 179 declare i8* @__cxa_begin_catch(i8*) 180 declare void @_ZSt9terminatev() 181 declare %"class.std::__1::basic_string"* @_ZNSt3__112basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEED1Ev(%"class.std::__1::basic_string"* returned) 182 declare void @_ZdlPv(i8*) #3 183 declare noalias i8* @_Znwm(i32) 184 declare void @_ZNSt3__112basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEE6__initEPKcm(%"class.std::__1::basic_string"*, i8*, i32) 185 declare void @_Unwind_SjLj_Register({ i8*, i32, [4 x i32], i8*, i8*, [5 x i8*] }*) 186 declare void @_Unwind_SjLj_Unregister({ i8*, i32, [4 x i32], i8*, i8*, [5 x i8*] }*) 187 declare i8* @llvm.frameaddress(i32) 188 declare i8* @llvm.stacksave() 189 declare void @llvm.stackrestore(i8*) 190 declare i32 @llvm.eh.sjlj.setjmp(i8*) 191 declare i8* @llvm.eh.sjlj.lsda() 192 declare void @llvm.eh.sjlj.callsite(i32) 193 declare void @llvm.eh.sjlj.functioncontext(i8*) 194
