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 ptr], ptr, ptr, ptr, %struct.dwarf_eh_bases, i64, i64, i64, [18 x i8] }
12 %struct.dwarf_eh_bases = type { ptr, ptr, ptr }
13 %struct._Unwind_FrameState = type { %struct.frame_state_reg_info, i64, i64, ptr, i32, ptr, ptr, i64, i64, i64, i8, i8, i8, i8, ptr }
14 %struct.frame_state_reg_info = type { [18 x %struct.anon], ptr }
15 %struct.anon = type { %union.anon, i32 }
16 %union.anon = type { i64 }
17 %struct._Unwind_Exception = type { i64, ptr, 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(ptr, ptr) uwtable
25 define hidden i32 @_Unwind_RaiseException(ptr %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 ptr @llvm.eh.dwarf.cfa(i32 0)
33 %1 = call ptr @llvm.returnaddress(i32 0)
34 call fastcc void @uw_init_context_1(ptr %this_context, ptr %0, ptr %1)
35 call void @llvm.memcpy.p0.p0.i64(ptr align 8 %cur_context, ptr align 8 %this_context, i64 240, i1 false)
36 %personality = getelementptr inbounds %struct._Unwind_FrameState, ptr %fs, i64 0, i32 6
37 %retaddr_column.i = getelementptr inbounds %struct._Unwind_FrameState, ptr %fs, i64 0, i32 9
38 %flags.i.i.i.i = getelementptr inbounds %struct._Unwind_Context, ptr %cur_context, i64 0, i32 5
39 %ra.i = getelementptr inbounds %struct._Unwind_Context, ptr %cur_context, i64 0, i32 2
42 while.body: ; preds = %uw_update_context.exit, %entry
43 %call = call fastcc i32 @uw_frame_state_for(ptr %cur_context, ptr %fs)
44 switch i32 %call, label %do.end21 [
45 i32 5, label %do.end21.loopexit46
49 if.end3: ; preds = %while.body
50 %2 = load ptr, ptr %personality, align 8
51 %tobool = icmp eq ptr %2, null
52 br i1 %tobool, label %if.end13, label %if.then4
54 if.then4: ; preds = %if.end3
55 %3 = load i64, ptr %exc, align 8
56 %call6 = call i32 %2(i32 1, i32 1, i64 %3, ptr %exc, ptr %cur_context)
57 switch i32 %call6, label %do.end21.loopexit46 [
58 i32 6, label %while.end
59 i32 8, label %if.end13
62 if.end13: ; preds = %if.then4, %if.end3
63 call fastcc void @uw_update_context_1(ptr %cur_context, ptr %fs)
64 %4 = load i64, ptr %retaddr_column.i, align 8
65 %conv.i = trunc i64 %4 to i32
66 %cmp.i.i.i = icmp slt i32 %conv.i, 18
67 br i1 %cmp.i.i.i, label %cond.end.i.i.i, label %cond.true.i.i.i
69 cond.true.i.i.i: ; preds = %if.end13
70 call void @abort() noreturn
73 cond.end.i.i.i: ; preds = %if.end13
74 %sext.i = shl i64 %4, 32
75 %idxprom.i.i.i = ashr exact i64 %sext.i, 32
76 %arrayidx.i.i.i = getelementptr inbounds [18 x i8], ptr @dwarf_reg_size_table, i64 0, i64 %idxprom.i.i.i
77 %5 = load i8, ptr %arrayidx.i.i.i, align 1
78 %arrayidx2.i.i.i = getelementptr inbounds %struct._Unwind_Context, ptr %cur_context, i64 0, i32 0, i64 %idxprom.i.i.i
79 %6 = load ptr, ptr %arrayidx2.i.i.i, align 8
80 %7 = load i64, ptr %flags.i.i.i.i, align 8
81 %and.i.i.i.i = and i64 %7, 4611686018427387904
82 %tobool.i.i.i = icmp eq i64 %and.i.i.i.i, 0
83 br i1 %tobool.i.i.i, label %if.end.i.i.i, label %land.lhs.true.i.i.i
85 land.lhs.true.i.i.i: ; preds = %cond.end.i.i.i
86 %arrayidx4.i.i.i = getelementptr inbounds %struct._Unwind_Context, ptr %cur_context, i64 0, i32 8, i64 %idxprom.i.i.i
87 %8 = load i8, ptr %arrayidx4.i.i.i, align 1
88 %tobool6.i.i.i = icmp eq i8 %8, 0
89 br i1 %tobool6.i.i.i, label %if.end.i.i.i, label %if.then.i.i.i
91 if.then.i.i.i: ; preds = %land.lhs.true.i.i.i
92 %9 = ptrtoint ptr %6 to i64
93 br label %uw_update_context.exit
95 if.end.i.i.i: ; preds = %land.lhs.true.i.i.i, %cond.end.i.i.i
96 %cmp8.i.i.i = icmp eq i8 %5, 8
97 br i1 %cmp8.i.i.i, label %if.then10.i.i.i, label %cond.true14.i.i.i
99 if.then10.i.i.i: ; preds = %if.end.i.i.i
100 %10 = load i64, ptr %6, align 8
101 br label %uw_update_context.exit
103 cond.true14.i.i.i: ; preds = %if.end.i.i.i
104 call void @abort() noreturn
107 uw_update_context.exit: ; preds = %if.then10.i.i.i, %if.then.i.i.i
108 %retval.0.i.i.i = phi i64 [ %9, %if.then.i.i.i ], [ %10, %if.then10.i.i.i ]
109 %11 = inttoptr i64 %retval.0.i.i.i to ptr
110 store ptr %11, ptr %ra.i, align 8
113 while.end: ; preds = %if.then4
114 %private_1 = getelementptr inbounds %struct._Unwind_Exception, ptr %exc, i64 0, i32 2
115 store i64 0, ptr %private_1, align 8
116 %12 = load ptr, ptr %ra.i, align 8
117 %13 = ptrtoint ptr %12 to i64
118 %private_2 = getelementptr inbounds %struct._Unwind_Exception, ptr %exc, i64 0, i32 3
119 store i64 %13, ptr %private_2, align 8
120 call void @llvm.memcpy.p0.p0.i64(ptr align 8 %cur_context, ptr align 8 %this_context, i64 240, i1 false)
121 call void @llvm.lifetime.start.p0(i64 -1, ptr %fs.i)
122 %personality.i = getelementptr inbounds %struct._Unwind_FrameState, ptr %fs.i, i64 0, i32 6
123 %retaddr_column.i22 = getelementptr inbounds %struct._Unwind_FrameState, ptr %fs.i, i64 0, i32 9
124 br label %while.body.i
126 while.body.i: ; preds = %uw_update_context.exit44, %while.end
127 %call.i = call fastcc i32 @uw_frame_state_for(ptr %cur_context, ptr %fs.i)
128 %14 = load ptr, ptr %ra.i, align 8
129 %15 = ptrtoint ptr %14 to i64
130 %16 = load i64, ptr %private_2, align 8
131 %cmp.i = icmp eq i64 %15, %16
132 %cmp2.i = icmp eq i32 %call.i, 0
133 br i1 %cmp2.i, label %if.end.i, label %do.end21
135 if.end.i: ; preds = %while.body.i
136 %17 = load ptr, ptr %personality.i, align 8
137 %tobool.i = icmp eq ptr %17, null
138 br i1 %tobool.i, label %if.end12.i, label %if.then3.i
140 if.then3.i: ; preds = %if.end.i
141 %or.i = select i1 %cmp.i, i32 6, i32 2
142 %18 = load i64, ptr %exc, align 8
143 %call5.i = call i32 %17(i32 1, i32 %or.i, i64 %18, ptr %exc, ptr %cur_context)
144 switch i32 %call5.i, label %do.end21 [
145 i32 7, label %do.body19
146 i32 8, label %if.end12.i
149 if.end12.i: ; preds = %if.then3.i, %if.end.i
150 br i1 %cmp.i, label %cond.true.i, label %cond.end.i
152 cond.true.i: ; preds = %if.end12.i
153 call void @abort() noreturn
156 cond.end.i: ; preds = %if.end12.i
157 call fastcc void @uw_update_context_1(ptr %cur_context, ptr %fs.i)
158 %19 = load i64, ptr %retaddr_column.i22, align 8
159 %conv.i23 = trunc i64 %19 to i32
160 %cmp.i.i.i24 = icmp slt i32 %conv.i23, 18
161 br i1 %cmp.i.i.i24, label %cond.end.i.i.i33, label %cond.true.i.i.i25
163 cond.true.i.i.i25: ; preds = %cond.end.i
164 call void @abort() noreturn
167 cond.end.i.i.i33: ; preds = %cond.end.i
168 %sext.i26 = shl i64 %19, 32
169 %idxprom.i.i.i27 = ashr exact i64 %sext.i26, 32
170 %arrayidx.i.i.i28 = getelementptr inbounds [18 x i8], ptr @dwarf_reg_size_table, i64 0, i64 %idxprom.i.i.i27
171 %20 = load i8, ptr %arrayidx.i.i.i28, align 1
172 %arrayidx2.i.i.i29 = getelementptr inbounds %struct._Unwind_Context, ptr %cur_context, i64 0, i32 0, i64 %idxprom.i.i.i27
173 %21 = load ptr, ptr %arrayidx2.i.i.i29, align 8
174 %22 = load i64, ptr %flags.i.i.i.i, align 8
175 %and.i.i.i.i31 = and i64 %22, 4611686018427387904
176 %tobool.i.i.i32 = icmp eq i64 %and.i.i.i.i31, 0
177 br i1 %tobool.i.i.i32, label %if.end.i.i.i39, label %land.lhs.true.i.i.i36
179 land.lhs.true.i.i.i36: ; preds = %cond.end.i.i.i33
180 %arrayidx4.i.i.i34 = getelementptr inbounds %struct._Unwind_Context, ptr %cur_context, i64 0, i32 8, i64 %idxprom.i.i.i27
181 %23 = load i8, ptr %arrayidx4.i.i.i34, align 1
182 %tobool6.i.i.i35 = icmp eq i8 %23, 0
183 br i1 %tobool6.i.i.i35, label %if.end.i.i.i39, label %if.then.i.i.i37
185 if.then.i.i.i37: ; preds = %land.lhs.true.i.i.i36
186 %24 = ptrtoint ptr %21 to i64
187 br label %uw_update_context.exit44
189 if.end.i.i.i39: ; preds = %land.lhs.true.i.i.i36, %cond.end.i.i.i33
190 %cmp8.i.i.i38 = icmp eq i8 %20, 8
191 br i1 %cmp8.i.i.i38, label %if.then10.i.i.i40, label %cond.true14.i.i.i41
193 if.then10.i.i.i40: ; preds = %if.end.i.i.i39
194 %25 = load i64, ptr %21, align 8
195 br label %uw_update_context.exit44
197 cond.true14.i.i.i41: ; preds = %if.end.i.i.i39
198 call void @abort() noreturn
201 uw_update_context.exit44: ; preds = %if.then10.i.i.i40, %if.then.i.i.i37
202 %retval.0.i.i.i42 = phi i64 [ %24, %if.then.i.i.i37 ], [ %25, %if.then10.i.i.i40 ]
203 %26 = inttoptr i64 %retval.0.i.i.i42 to ptr
204 store ptr %26, ptr %ra.i, align 8
205 br label %while.body.i
207 do.body19: ; preds = %if.then3.i
208 call void @llvm.lifetime.end.p0(i64 -1, ptr %fs.i)
209 %call20 = call fastcc i64 @uw_install_context_1(ptr %this_context, ptr %cur_context)
210 %27 = load ptr, ptr %ra.i, align 8
211 call void @llvm.eh.return.i64(i64 %call20, ptr %27)
214 do.end21.loopexit46: ; preds = %if.then4, %while.body
215 %retval.0.ph = phi i32 [ 3, %if.then4 ], [ 5, %while.body ]
218 do.end21: ; preds = %do.end21.loopexit46, %if.then3.i, %while.body.i, %while.body
219 %retval.0 = phi i32 [ %retval.0.ph, %do.end21.loopexit46 ], [ 3, %while.body ], [ 2, %while.body.i ], [ 2, %if.then3.i ]
223 declare void @llvm.eh.unwind.init() nounwind
225 declare fastcc void @uw_init_context_1(ptr, ptr, ptr) uwtable
227 declare ptr @llvm.eh.dwarf.cfa(i32) nounwind
229 declare ptr @llvm.returnaddress(i32) nounwind readnone
231 declare void @llvm.memcpy.p0.p0.i64(ptr nocapture, ptr nocapture, i64, i1) nounwind
233 declare fastcc i64 @uw_install_context_1(ptr, ptr) uwtable
235 declare void @llvm.eh.return.i64(i64, ptr) nounwind
237 declare fastcc void @uw_update_context_1(ptr, ptr nocapture) uwtable
239 declare void @llvm.lifetime.start.p0(i64, ptr nocapture) nounwind
241 declare void @llvm.lifetime.end.p0(i64, ptr nocapture) nounwind