1 ; RUN: opt < %s -jump-threading -S | FileCheck %s
2 ; Test whether two consecutive switches with identical structures assign the
3 ; proper value to the proper variable. This is really testing
4 ; Instruction::isIdenticalToWhenDefined, as previously that function was
5 ; returning true if the value part of the operands of two phis were identical,
6 ; even if the incoming blocks were not.
7 ; NB: this function should be pruned down more.
9 %struct._GList = type { i8*, %struct._GList*, %struct._GList* }
10 %struct.filter_def = type { i8*, i8* }
12 @capture_filters = external hidden global %struct._GList*, align 8
13 @display_filters = external hidden global %struct._GList*, align 8
14 @.str2 = external hidden unnamed_addr constant [10 x i8], align 1
15 @__PRETTY_FUNCTION__.copy_filter_list = external hidden unnamed_addr constant [62 x i8], align 1
16 @.str12 = external hidden unnamed_addr constant [22 x i8], align 1
17 @.str13 = external hidden unnamed_addr constant [31 x i8], align 1
18 @capture_edited_filters = external hidden global %struct._GList*, align 8
19 @display_edited_filters = external hidden global %struct._GList*, align 8
20 @__PRETTY_FUNCTION__.get_filter_list = external hidden unnamed_addr constant [44 x i8], align 1
22 declare void @g_assertion_message(i8*, i8*, i32, i8*, i8*) noreturn
24 declare void @g_free(i8*)
26 declare %struct._GList* @g_list_first(%struct._GList*)
28 declare noalias i8* @g_malloc(i64)
30 define void @copy_filter_list(i32 %dest_type, i32 %src_type) nounwind uwtable ssp {
34 do.body: ; preds = %entry
35 %cmp = icmp ne i32 %dest_type, %src_type
36 br i1 %cmp, label %if.then, label %if.else
38 if.then: ; preds = %do.body
41 if.else: ; preds = %do.body
42 call void @g_assertion_message_expr(i8* null, i8* getelementptr inbounds ([10 x i8], [10 x i8]* @.str2, i32 0, i32 0), i32 581, i8* getelementptr inbounds ([62 x i8], [62 x i8]* @__PRETTY_FUNCTION__.copy_filter_list, i32 0, i32 0), i8* getelementptr inbounds ([22 x i8], [22 x i8]* @.str12, i32 0, i32 0)) noreturn
45 if.end: ; preds = %if.then
48 do.end: ; preds = %if.end
49 switch i32 %dest_type, label %sw.default.i [
51 i32 1, label %sw.bb1.i
52 i32 2, label %sw.bb2.i
53 i32 3, label %sw.bb3.i
56 sw.bb.i: ; preds = %do.end
57 br label %get_filter_list.exit
59 sw.bb1.i: ; preds = %do.end
60 br label %get_filter_list.exit
62 sw.bb2.i: ; preds = %do.end
63 br label %get_filter_list.exit
65 sw.bb3.i: ; preds = %do.end
66 br label %get_filter_list.exit
68 sw.default.i: ; preds = %do.end
69 call void @g_assertion_message(i8* null, i8* getelementptr inbounds ([10 x i8], [10 x i8]* @.str2, i32 0, i32 0), i32 408, i8* getelementptr inbounds ([44 x i8], [44 x i8]* @__PRETTY_FUNCTION__.get_filter_list, i32 0, i32 0), i8* null) noreturn nounwind
72 get_filter_list.exit: ; preds = %sw.bb3.i, %sw.bb2.i, %sw.bb1.i, %sw.bb.i
73 %0 = phi %struct._GList** [ @display_edited_filters, %sw.bb3.i ], [ @capture_edited_filters, %sw.bb2.i ], [ @display_filters, %sw.bb1.i ], [ @capture_filters, %sw.bb.i ]
74 switch i32 %src_type, label %sw.default.i5 [
75 i32 0, label %sw.bb.i1
76 i32 1, label %sw.bb1.i2
77 i32 2, label %sw.bb2.i3
78 i32 3, label %sw.bb3.i4
81 sw.bb.i1: ; preds = %get_filter_list.exit
82 br label %get_filter_list.exit6
84 sw.bb1.i2: ; preds = %get_filter_list.exit
85 br label %get_filter_list.exit6
87 sw.bb2.i3: ; preds = %get_filter_list.exit
88 br label %get_filter_list.exit6
90 sw.bb3.i4: ; preds = %get_filter_list.exit
91 br label %get_filter_list.exit6
93 sw.default.i5: ; preds = %get_filter_list.exit
94 call void @g_assertion_message(i8* null, i8* getelementptr inbounds ([10 x i8], [10 x i8]* @.str2, i32 0, i32 0), i32 408, i8* getelementptr inbounds ([44 x i8], [44 x i8]* @__PRETTY_FUNCTION__.get_filter_list, i32 0, i32 0), i8* null) noreturn nounwind
97 ; CHECK: get_filter_list.exit
98 get_filter_list.exit6: ; preds = %sw.bb3.i4, %sw.bb2.i3, %sw.bb1.i2, %sw.bb.i1
99 %1 = phi %struct._GList** [ @display_edited_filters, %sw.bb3.i4 ], [ @capture_edited_filters, %sw.bb2.i3 ], [ @display_filters, %sw.bb1.i2 ], [ @capture_filters, %sw.bb.i1 ]
101 %2 = load %struct._GList*, %struct._GList** %1, align 8
102 ; We should have jump-threading insert an additional load here for the value
103 ; coming out of the first switch, which is picked up by a subsequent phi
104 ; CHECK: %.pr = load %struct._GList*, %struct._GList** %0
105 ; CHECK-NEXT: br label %while.cond
109 while.cond: ; preds = %while.body, %get_filter_list.exit6
110 ; CHECK: {{= phi .*%.pr}}
111 %3 = load %struct._GList*, %struct._GList** %0, align 8
113 %tobool = icmp ne %struct._GList* %3, null
114 br i1 %tobool, label %while.body, label %while.end
116 while.body: ; preds = %while.cond
117 %4 = load %struct._GList*, %struct._GList** %0, align 8
118 %5 = load %struct._GList*, %struct._GList** %0, align 8
119 %call2 = call %struct._GList* @g_list_first(%struct._GList* %5)
120 %data.i = getelementptr inbounds %struct._GList, %struct._GList* %call2, i32 0, i32 0
121 %6 = load i8*, i8** %data.i, align 8
122 %7 = bitcast i8* %6 to %struct.filter_def*
123 %name.i = getelementptr inbounds %struct.filter_def, %struct.filter_def* %7, i32 0, i32 0
124 %8 = load i8*, i8** %name.i, align 8
125 call void @g_free(i8* %8) nounwind
126 %strval.i = getelementptr inbounds %struct.filter_def, %struct.filter_def* %7, i32 0, i32 1
127 %9 = load i8*, i8** %strval.i, align 8
128 call void @g_free(i8* %9) nounwind
129 %10 = bitcast %struct.filter_def* %7 to i8*
130 call void @g_free(i8* %10) nounwind
131 %call.i = call %struct._GList* @g_list_remove_link(%struct._GList* %4, %struct._GList* %call2) nounwind
132 store %struct._GList* %call.i, %struct._GList** %0, align 8
135 while.end: ; preds = %while.cond
138 do.body4: ; preds = %while.end
139 %11 = load %struct._GList*, %struct._GList** %0, align 8
140 %call5 = call i32 @g_list_length(%struct._GList* %11)
141 %cmp6 = icmp eq i32 %call5, 0
142 br i1 %cmp6, label %if.then7, label %if.else8
144 if.then7: ; preds = %do.body4
147 if.else8: ; preds = %do.body4
148 call void @g_assertion_message_expr(i8* null, i8* getelementptr inbounds ([10 x i8], [10 x i8]* @.str2, i32 0, i32 0), i32 600, i8* getelementptr inbounds ([62 x i8], [62 x i8]* @__PRETTY_FUNCTION__.copy_filter_list, i32 0, i32 0), i8* getelementptr inbounds ([31 x i8], [31 x i8]* @.str13, i32 0, i32 0)) noreturn
151 if.end9: ; preds = %if.then7
154 do.end10: ; preds = %if.end9
155 br label %while.cond11
157 while.cond11: ; preds = %cond.end, %do.end10
158 %cond10 = phi %struct._GList* [ %cond, %cond.end ], [ %2, %do.end10 ]
159 %tobool12 = icmp ne %struct._GList* %cond10, null
160 br i1 %tobool12, label %while.body13, label %while.end16
162 while.body13: ; preds = %while.cond11
163 %data = getelementptr inbounds %struct._GList, %struct._GList* %cond10, i32 0, i32 0
164 %12 = load i8*, i8** %data, align 8
165 %13 = bitcast i8* %12 to %struct.filter_def*
166 %14 = load %struct._GList*, %struct._GList** %0, align 8
167 %name = getelementptr inbounds %struct.filter_def, %struct.filter_def* %13, i32 0, i32 0
168 %15 = load i8*, i8** %name, align 8
169 %strval = getelementptr inbounds %struct.filter_def, %struct.filter_def* %13, i32 0, i32 1
170 %16 = load i8*, i8** %strval, align 8
171 %call.i7 = call noalias i8* @g_malloc(i64 16) nounwind
172 %17 = bitcast i8* %call.i7 to %struct.filter_def*
173 %call1.i = call noalias i8* @g_strdup(i8* %15) nounwind
174 %name.i8 = getelementptr inbounds %struct.filter_def, %struct.filter_def* %17, i32 0, i32 0
175 store i8* %call1.i, i8** %name.i8, align 8
176 %call2.i = call noalias i8* @g_strdup(i8* %16) nounwind
177 %strval.i9 = getelementptr inbounds %struct.filter_def, %struct.filter_def* %17, i32 0, i32 1
178 store i8* %call2.i, i8** %strval.i9, align 8
179 %18 = bitcast %struct.filter_def* %17 to i8*
180 %call3.i = call %struct._GList* @g_list_append(%struct._GList* %14, i8* %18) nounwind
181 store %struct._GList* %call3.i, %struct._GList** %0, align 8
182 %tobool15 = icmp ne %struct._GList* %cond10, null
183 br i1 %tobool15, label %cond.true, label %cond.false
185 cond.true: ; preds = %while.body13
186 %next = getelementptr inbounds %struct._GList, %struct._GList* %cond10, i32 0, i32 1
187 %19 = load %struct._GList*, %struct._GList** %next, align 8
190 cond.false: ; preds = %while.body13
193 cond.end: ; preds = %cond.false, %cond.true
194 %cond = phi %struct._GList* [ %19, %cond.true ], [ null, %cond.false ]
195 br label %while.cond11
197 while.end16: ; preds = %while.cond11
201 declare void @g_assertion_message_expr(i8*, i8*, i32, i8*, i8*) noreturn
203 declare i32 @g_list_length(%struct._GList*)
205 declare noalias i8* @g_strdup(i8*)
207 declare %struct._GList* @g_list_append(%struct._GList*, i8*)
209 declare %struct._GList* @g_list_remove_link(%struct._GList*, %struct._GList*)