1 ; RUN: llc < %s -verify-machineinstrs
4 ; The _Unwind_RaiseException function can return normally and via eh.return.
5 ; This causes confusion about the function live-out registers, since the two
6 ; different ways of returning have different return values.
8 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-S128"
9 target triple = "x86_64-unknown-freebsd9.0"
11 %struct._Unwind_Context = type { [18 x i8*], i8*, i8*, i8*, %struct.dwarf_eh_bases, i64, i64, i64, [18 x i8] }
12 %struct.dwarf_eh_bases = type { i8*, i8*, i8* }
13 %struct._Unwind_FrameState = type { %struct.frame_state_reg_info, i64, i64, i8*, i32, i8*, i32 (i32, i32, i64, %struct._Unwind_Exception*, %struct._Unwind_Context*)*, i64, i64, i64, i8, i8, i8, i8, i8* }
14 %struct.frame_state_reg_info = type { [18 x %struct.anon], %struct.frame_state_reg_info* }
15 %struct.anon = type { %union.anon, i32 }
16 %union.anon = type { i64 }
17 %struct._Unwind_Exception = type { i64, void (i32, %struct._Unwind_Exception*)*, i64, i64 }
19 @dwarf_reg_size_table = external hidden unnamed_addr global [18 x i8], align 16
21 declare void @abort() noreturn
23 declare fastcc i32 @uw_frame_state_for(%struct._Unwind_Context*, %struct._Unwind_FrameState*) uwtable
25 define hidden i32 @_Unwind_RaiseException(%struct._Unwind_Exception* %exc) uwtable {
27 %fs.i = alloca %struct._Unwind_FrameState, align 8
28 %this_context = alloca %struct._Unwind_Context, align 8
29 %cur_context = alloca %struct._Unwind_Context, align 8
30 %fs = alloca %struct._Unwind_FrameState, align 8
31 call void @llvm.eh.unwind.init()
32 %0 = call i8* @llvm.eh.dwarf.cfa(i32 0)
33 %1 = call i8* @llvm.returnaddress(i32 0)
34 call fastcc void @uw_init_context_1(%struct._Unwind_Context* %this_context, i8* %0, i8* %1)
35 %2 = bitcast %struct._Unwind_Context* %cur_context to i8*
36 %3 = bitcast %struct._Unwind_Context* %this_context to i8*
37 call void @llvm.memcpy.p0i8.p0i8.i64(i8* align 8 %2, i8* align 8 %3, i64 240, i1 false)
38 %personality = getelementptr inbounds %struct._Unwind_FrameState, %struct._Unwind_FrameState* %fs, i64 0, i32 6
39 %retaddr_column.i = getelementptr inbounds %struct._Unwind_FrameState, %struct._Unwind_FrameState* %fs, i64 0, i32 9
40 %flags.i.i.i.i = getelementptr inbounds %struct._Unwind_Context, %struct._Unwind_Context* %cur_context, i64 0, i32 5
41 %ra.i = getelementptr inbounds %struct._Unwind_Context, %struct._Unwind_Context* %cur_context, i64 0, i32 2
42 %exception_class = getelementptr inbounds %struct._Unwind_Exception, %struct._Unwind_Exception* %exc, i64 0, i32 0
45 while.body: ; preds = %uw_update_context.exit, %entry
46 %call = call fastcc i32 @uw_frame_state_for(%struct._Unwind_Context* %cur_context, %struct._Unwind_FrameState* %fs)
47 switch i32 %call, label %do.end21 [
48 i32 5, label %do.end21.loopexit46
52 if.end3: ; preds = %while.body
53 %4 = load i32 (i32, i32, i64, %struct._Unwind_Exception*, %struct._Unwind_Context*)*, i32 (i32, i32, i64, %struct._Unwind_Exception*, %struct._Unwind_Context*)** %personality, align 8
54 %tobool = icmp eq i32 (i32, i32, i64, %struct._Unwind_Exception*, %struct._Unwind_Context*)* %4, null
55 br i1 %tobool, label %if.end13, label %if.then4
57 if.then4: ; preds = %if.end3
58 %5 = load i64, i64* %exception_class, align 8
59 %call6 = call i32 %4(i32 1, i32 1, i64 %5, %struct._Unwind_Exception* %exc, %struct._Unwind_Context* %cur_context)
60 switch i32 %call6, label %do.end21.loopexit46 [
61 i32 6, label %while.end
62 i32 8, label %if.end13
65 if.end13: ; preds = %if.then4, %if.end3
66 call fastcc void @uw_update_context_1(%struct._Unwind_Context* %cur_context, %struct._Unwind_FrameState* %fs)
67 %6 = load i64, i64* %retaddr_column.i, align 8
68 %conv.i = trunc i64 %6 to i32
69 %cmp.i.i.i = icmp slt i32 %conv.i, 18
70 br i1 %cmp.i.i.i, label %cond.end.i.i.i, label %cond.true.i.i.i
72 cond.true.i.i.i: ; preds = %if.end13
73 call void @abort() noreturn
76 cond.end.i.i.i: ; preds = %if.end13
77 %sext.i = shl i64 %6, 32
78 %idxprom.i.i.i = ashr exact i64 %sext.i, 32
79 %arrayidx.i.i.i = getelementptr inbounds [18 x i8], [18 x i8]* @dwarf_reg_size_table, i64 0, i64 %idxprom.i.i.i
80 %7 = load i8, i8* %arrayidx.i.i.i, align 1
81 %arrayidx2.i.i.i = getelementptr inbounds %struct._Unwind_Context, %struct._Unwind_Context* %cur_context, i64 0, i32 0, i64 %idxprom.i.i.i
82 %8 = load i8*, i8** %arrayidx2.i.i.i, align 8
83 %9 = load i64, i64* %flags.i.i.i.i, align 8
84 %and.i.i.i.i = and i64 %9, 4611686018427387904
85 %tobool.i.i.i = icmp eq i64 %and.i.i.i.i, 0
86 br i1 %tobool.i.i.i, label %if.end.i.i.i, label %land.lhs.true.i.i.i
88 land.lhs.true.i.i.i: ; preds = %cond.end.i.i.i
89 %arrayidx4.i.i.i = getelementptr inbounds %struct._Unwind_Context, %struct._Unwind_Context* %cur_context, i64 0, i32 8, i64 %idxprom.i.i.i
90 %10 = load i8, i8* %arrayidx4.i.i.i, align 1
91 %tobool6.i.i.i = icmp eq i8 %10, 0
92 br i1 %tobool6.i.i.i, label %if.end.i.i.i, label %if.then.i.i.i
94 if.then.i.i.i: ; preds = %land.lhs.true.i.i.i
95 %11 = ptrtoint i8* %8 to i64
96 br label %uw_update_context.exit
98 if.end.i.i.i: ; preds = %land.lhs.true.i.i.i, %cond.end.i.i.i
99 %cmp8.i.i.i = icmp eq i8 %7, 8
100 br i1 %cmp8.i.i.i, label %if.then10.i.i.i, label %cond.true14.i.i.i
102 if.then10.i.i.i: ; preds = %if.end.i.i.i
103 %12 = bitcast i8* %8 to i64*
104 %13 = load i64, i64* %12, align 8
105 br label %uw_update_context.exit
107 cond.true14.i.i.i: ; preds = %if.end.i.i.i
108 call void @abort() noreturn
111 uw_update_context.exit: ; preds = %if.then10.i.i.i, %if.then.i.i.i
112 %retval.0.i.i.i = phi i64 [ %11, %if.then.i.i.i ], [ %13, %if.then10.i.i.i ]
113 %14 = inttoptr i64 %retval.0.i.i.i to i8*
114 store i8* %14, i8** %ra.i, align 8
117 while.end: ; preds = %if.then4
118 %private_1 = getelementptr inbounds %struct._Unwind_Exception, %struct._Unwind_Exception* %exc, i64 0, i32 2
119 store i64 0, i64* %private_1, align 8
120 %15 = load i8*, i8** %ra.i, align 8
121 %16 = ptrtoint i8* %15 to i64
122 %private_2 = getelementptr inbounds %struct._Unwind_Exception, %struct._Unwind_Exception* %exc, i64 0, i32 3
123 store i64 %16, i64* %private_2, align 8
124 call void @llvm.memcpy.p0i8.p0i8.i64(i8* align 8 %2, i8* align 8 %3, i64 240, i1 false)
125 %17 = bitcast %struct._Unwind_FrameState* %fs.i to i8*
126 call void @llvm.lifetime.start.p0i8(i64 -1, i8* %17)
127 %personality.i = getelementptr inbounds %struct._Unwind_FrameState, %struct._Unwind_FrameState* %fs.i, i64 0, i32 6
128 %retaddr_column.i22 = getelementptr inbounds %struct._Unwind_FrameState, %struct._Unwind_FrameState* %fs.i, i64 0, i32 9
129 br label %while.body.i
131 while.body.i: ; preds = %uw_update_context.exit44, %while.end
132 %call.i = call fastcc i32 @uw_frame_state_for(%struct._Unwind_Context* %cur_context, %struct._Unwind_FrameState* %fs.i)
133 %18 = load i8*, i8** %ra.i, align 8
134 %19 = ptrtoint i8* %18 to i64
135 %20 = load i64, i64* %private_2, align 8
136 %cmp.i = icmp eq i64 %19, %20
137 %cmp2.i = icmp eq i32 %call.i, 0
138 br i1 %cmp2.i, label %if.end.i, label %do.end21
140 if.end.i: ; preds = %while.body.i
141 %21 = load i32 (i32, i32, i64, %struct._Unwind_Exception*, %struct._Unwind_Context*)*, i32 (i32, i32, i64, %struct._Unwind_Exception*, %struct._Unwind_Context*)** %personality.i, align 8
142 %tobool.i = icmp eq i32 (i32, i32, i64, %struct._Unwind_Exception*, %struct._Unwind_Context*)* %21, null
143 br i1 %tobool.i, label %if.end12.i, label %if.then3.i
145 if.then3.i: ; preds = %if.end.i
146 %or.i = select i1 %cmp.i, i32 6, i32 2
147 %22 = load i64, i64* %exception_class, align 8
148 %call5.i = call i32 %21(i32 1, i32 %or.i, i64 %22, %struct._Unwind_Exception* %exc, %struct._Unwind_Context* %cur_context)
149 switch i32 %call5.i, label %do.end21 [
150 i32 7, label %do.body19
151 i32 8, label %if.end12.i
154 if.end12.i: ; preds = %if.then3.i, %if.end.i
155 br i1 %cmp.i, label %cond.true.i, label %cond.end.i
157 cond.true.i: ; preds = %if.end12.i
158 call void @abort() noreturn
161 cond.end.i: ; preds = %if.end12.i
162 call fastcc void @uw_update_context_1(%struct._Unwind_Context* %cur_context, %struct._Unwind_FrameState* %fs.i)
163 %23 = load i64, i64* %retaddr_column.i22, align 8
164 %conv.i23 = trunc i64 %23 to i32
165 %cmp.i.i.i24 = icmp slt i32 %conv.i23, 18
166 br i1 %cmp.i.i.i24, label %cond.end.i.i.i33, label %cond.true.i.i.i25
168 cond.true.i.i.i25: ; preds = %cond.end.i
169 call void @abort() noreturn
172 cond.end.i.i.i33: ; preds = %cond.end.i
173 %sext.i26 = shl i64 %23, 32
174 %idxprom.i.i.i27 = ashr exact i64 %sext.i26, 32
175 %arrayidx.i.i.i28 = getelementptr inbounds [18 x i8], [18 x i8]* @dwarf_reg_size_table, i64 0, i64 %idxprom.i.i.i27
176 %24 = load i8, i8* %arrayidx.i.i.i28, align 1
177 %arrayidx2.i.i.i29 = getelementptr inbounds %struct._Unwind_Context, %struct._Unwind_Context* %cur_context, i64 0, i32 0, i64 %idxprom.i.i.i27
178 %25 = load i8*, i8** %arrayidx2.i.i.i29, align 8
179 %26 = load i64, i64* %flags.i.i.i.i, align 8
180 %and.i.i.i.i31 = and i64 %26, 4611686018427387904
181 %tobool.i.i.i32 = icmp eq i64 %and.i.i.i.i31, 0
182 br i1 %tobool.i.i.i32, label %if.end.i.i.i39, label %land.lhs.true.i.i.i36
184 land.lhs.true.i.i.i36: ; preds = %cond.end.i.i.i33
185 %arrayidx4.i.i.i34 = getelementptr inbounds %struct._Unwind_Context, %struct._Unwind_Context* %cur_context, i64 0, i32 8, i64 %idxprom.i.i.i27
186 %27 = load i8, i8* %arrayidx4.i.i.i34, align 1
187 %tobool6.i.i.i35 = icmp eq i8 %27, 0
188 br i1 %tobool6.i.i.i35, label %if.end.i.i.i39, label %if.then.i.i.i37
190 if.then.i.i.i37: ; preds = %land.lhs.true.i.i.i36
191 %28 = ptrtoint i8* %25 to i64
192 br label %uw_update_context.exit44
194 if.end.i.i.i39: ; preds = %land.lhs.true.i.i.i36, %cond.end.i.i.i33
195 %cmp8.i.i.i38 = icmp eq i8 %24, 8
196 br i1 %cmp8.i.i.i38, label %if.then10.i.i.i40, label %cond.true14.i.i.i41
198 if.then10.i.i.i40: ; preds = %if.end.i.i.i39
199 %29 = bitcast i8* %25 to i64*
200 %30 = load i64, i64* %29, align 8
201 br label %uw_update_context.exit44
203 cond.true14.i.i.i41: ; preds = %if.end.i.i.i39
204 call void @abort() noreturn
207 uw_update_context.exit44: ; preds = %if.then10.i.i.i40, %if.then.i.i.i37
208 %retval.0.i.i.i42 = phi i64 [ %28, %if.then.i.i.i37 ], [ %30, %if.then10.i.i.i40 ]
209 %31 = inttoptr i64 %retval.0.i.i.i42 to i8*
210 store i8* %31, i8** %ra.i, align 8
211 br label %while.body.i
213 do.body19: ; preds = %if.then3.i
214 call void @llvm.lifetime.end.p0i8(i64 -1, i8* %17)
215 %call20 = call fastcc i64 @uw_install_context_1(%struct._Unwind_Context* %this_context, %struct._Unwind_Context* %cur_context)
216 %32 = load i8*, i8** %ra.i, align 8
217 call void @llvm.eh.return.i64(i64 %call20, i8* %32)
220 do.end21.loopexit46: ; preds = %if.then4, %while.body
221 %retval.0.ph = phi i32 [ 3, %if.then4 ], [ 5, %while.body ]
224 do.end21: ; preds = %do.end21.loopexit46, %if.then3.i, %while.body.i, %while.body
225 %retval.0 = phi i32 [ %retval.0.ph, %do.end21.loopexit46 ], [ 3, %while.body ], [ 2, %while.body.i ], [ 2, %if.then3.i ]
229 declare void @llvm.eh.unwind.init() nounwind
231 declare fastcc void @uw_init_context_1(%struct._Unwind_Context*, i8*, i8*) uwtable
233 declare i8* @llvm.eh.dwarf.cfa(i32) nounwind
235 declare i8* @llvm.returnaddress(i32) nounwind readnone
237 declare void @llvm.memcpy.p0i8.p0i8.i64(i8* nocapture, i8* nocapture, i64, i1) nounwind
239 declare fastcc i64 @uw_install_context_1(%struct._Unwind_Context*, %struct._Unwind_Context*) uwtable
241 declare void @llvm.eh.return.i64(i64, i8*) nounwind
243 declare fastcc void @uw_update_context_1(%struct._Unwind_Context*, %struct._Unwind_FrameState* nocapture) uwtable
245 declare void @llvm.lifetime.start.p0i8(i64, i8* nocapture) nounwind
247 declare void @llvm.lifetime.end.p0i8(i64, i8* nocapture) nounwind