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.
5 %struct.__CFString = type opaque
7 declare void @bar(%struct.__CFString*, %struct.__CFString*)
9 define noalias i8* @foo(i8* nocapture %inRefURL) noreturn ssp personality i8* bitcast (i32 (...)* @__gxx_personality_sj0 to i8*) {
11 %call = tail call %struct.__CFString* @bar3()
12 %call2 = invoke i8* @bar2()
13 to label %for.cond unwind label %lpad
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
19 lpad: ; preds = %entry
20 %0 = landingpad { i8*, i32 }
22 %1 = extractvalue { i8*, i32 } %0, 0
23 %2 = extractvalue { i8*, i32 } %0, 1
26 lpad5: ; preds = %for.cond
27 %3 = landingpad { i8*, i32 }
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
34 terminate.lpad.i.i16: ; preds = %lpad5
35 %6 = landingpad { i8*, i32 }
37 tail call void @terminatev() noreturn nounwind
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
47 terminate.lpad.i.i: ; preds = %ehcleanup
48 %8 = landingpad { i8*, i32 }
50 tail call void @terminatev() noreturn nounwind
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
59 declare %struct.__CFString* @bar3()
63 declare i32 @__gxx_personality_sj0(...)
65 declare void @release(i8*)
67 declare void @terminatev()
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
76 ; CHECK-LABEL: __Z4foo1c:
78 ; CHECK: {{.*}}@ %do.body.i.i.i.preheader
79 ; CHECK: str r0, [sp, [[OFFSET:#[0-9]+]]]
80 ; CHECK: {{.*}}@ %do.body.i.i.i
81 ; CHECK: ldr [[R0:r[0-9]+]], [sp, [[OFFSET]]]
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* }
91 @.str = private unnamed_addr constant [12 x i8] c"some_string\00", align 1
93 define void @_Z4foo1c(i8 signext %a) personality i8* bitcast (i32 (...)* @__gxx_personality_sj0 to i8*) {
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
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
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
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
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
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
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
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)
133 lpad.body: ; preds = %entry
134 %2 = landingpad { i8*, i32 }
136 %3 = extractvalue { i8*, i32 } %2, 0
137 %4 = extractvalue { i8*, i32 } %2, 1
140 lpad2: ; preds = %invoke.cont
141 %5 = landingpad { i8*, i32 }
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
148 _ZNSt3__113__vector_baseIcNS_9allocatorIcEEE5clearEv.exit.i.i.i26: ; preds = %lpad2
149 call void @_ZdlPv(i8* %call.i.i.i14.i.i)
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
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
163 terminate.lpad: ; preds = %ehcleanup
164 %8 = landingpad { i8*, i32 }
166 %9 = extractvalue { i8*, i32 } %8, 0
167 call void @__clang_call_terminate(i8* %9)
171 declare void @_Z4foo2Pci(i8*, i32)
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()
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*)