1 ; RUN: llc < %s -verify-machineinstrs 2 ; PR13188 3 ; 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. 7 ; 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" 10 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 } 18 19 @dwarf_reg_size_table = external hidden unnamed_addr global [18 x i8], align 16 20 21 declare void @abort() noreturn 22 23 declare fastcc i32 @uw_frame_state_for(%struct._Unwind_Context*, %struct._Unwind_FrameState*) uwtable 24 25 define hidden i32 @_Unwind_RaiseException(%struct._Unwind_Exception* %exc) uwtable { 26 entry: 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* %2, i8* %3, i64 240, i32 8, 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 43 br label %while.body 44 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 49 i32 0, label %if.end3 50 ] 51 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 56 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 63 ] 64 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 71 72 cond.true.i.i.i: ; preds = %if.end13 73 call void @abort() noreturn 74 unreachable 75 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 87 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 93 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 97 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 101 102 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 106 107 cond.true14.i.i.i: ; preds = %if.end.i.i.i 108 call void @abort() noreturn 109 unreachable 110 111 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 8 115 br label %while.body 116 117 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* %2, i8* %3, i64 240, i32 8, i1 false) 125 %17 = bitcast %struct._Unwind_FrameState* %fs.i to i8* 126 call void @llvm.lifetime.start(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 130 131 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 139 140 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 144 145 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 152 ] 153 154 if.end12.i: ; preds = %if.then3.i, %if.end.i 155 br i1 %cmp.i, label %cond.true.i, label %cond.end.i 156 157 cond.true.i: ; preds = %if.end12.i 158 call void @abort() noreturn 159 unreachable 160 161 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 167 168 cond.true.i.i.i25: ; preds = %cond.end.i 169 call void @abort() noreturn 170 unreachable 171 172 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 183 184 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 189 190 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 193 194 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 197 198 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 202 203 cond.true14.i.i.i41: ; preds = %if.end.i.i.i39 204 call void @abort() noreturn 205 unreachable 206 207 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 212 213 do.body19: ; preds = %if.then3.i 214 call void @llvm.lifetime.end(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) 218 unreachable 219 220 do.end21.loopexit46: ; preds = %if.then4, %while.body 221 %retval.0.ph = phi i32 [ 3, %if.then4 ], [ 5, %while.body ] 222 br label %do.end21 223 224 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 ] 226 ret i32 %retval.0 227 } 228 229 declare void @llvm.eh.unwind.init() nounwind 230 231 declare fastcc void @uw_init_context_1(%struct._Unwind_Context*, i8*, i8*) uwtable 232 233 declare i8* @llvm.eh.dwarf.cfa(i32) nounwind 234 235 declare i8* @llvm.returnaddress(i32) nounwind readnone 236 237 declare void @llvm.memcpy.p0i8.p0i8.i64(i8* nocapture, i8* nocapture, i64, i32, i1) nounwind 238 239 declare fastcc i64 @uw_install_context_1(%struct._Unwind_Context*, %struct._Unwind_Context*) uwtable 240 241 declare void @llvm.eh.return.i64(i64, i8*) nounwind 242 243 declare fastcc void @uw_update_context_1(%struct._Unwind_Context*, %struct._Unwind_FrameState* nocapture) uwtable 244 245 declare void @llvm.lifetime.start(i64, i8* nocapture) nounwind 246 247 declare void @llvm.lifetime.end(i64, i8* nocapture) nounwind 248
