1 ; RUN: llc < %s --mtriple=wasm32-unknown-unknown -wasm-disable-explicit-locals -wasm-keep-registers -wasm-enable-eh -exception-model=wasm -mattr=+exception-handling | FileCheck %s -check-prefixes=CHECK,NOPIC -DPTR=32
2 ; RUN: llc < %s --mtriple=wasm64-unknown-unknown -wasm-disable-explicit-locals -wasm-keep-registers -wasm-enable-eh -exception-model=wasm -mattr=+exception-handling | FileCheck %s -check-prefixes=CHECK,NOPIC -DPTR=64
3 ; RUN: llc < %s --mtriple=wasm32-unknown-emscripten -wasm-disable-explicit-locals -wasm-keep-registers -wasm-enable-eh -exception-model=wasm -mattr=+exception-handling | FileCheck %s -check-prefixes=CHECK,NOPIC -DPTR=32
4 ; RUN: llc < %s --mtriple=wasm64-unknown-emscripten -wasm-disable-explicit-locals -wasm-keep-registers -wasm-enable-eh -exception-model=wasm -mattr=+exception-handling | FileCheck %s -check-prefixes=CHECK,NOPIC -DPTR=64
5 ; RUN: llc < %s --mtriple=wasm32-unknown-emscripten -wasm-disable-explicit-locals -wasm-keep-registers -wasm-enable-eh -exception-model=wasm -mattr=+exception-handling -relocation-model=pic | FileCheck %s -check-prefixes=CHECK,PIC -DPTR=32
6 ; RUN: llc < %s --mtriple=wasm64-unknown-emscripten -wasm-disable-explicit-locals -wasm-keep-registers -wasm-enable-eh -exception-model=wasm -mattr=+exception-handling -relocation-model=pic | FileCheck %s -check-prefixes=CHECK,PIC -DPTR=64
8 @_ZTIi = external constant ptr
9 @_ZTIf = external constant ptr
10 @_ZTId = external constant ptr
12 ; Single catch (...) does not need an exception table.
19 ; CHECK-NOT: GCC_except_table
20 define void @test0() personality ptr @__gxx_wasm_personality_v0 {
22 invoke void @may_throw()
23 to label %try.cont unwind label %catch.dispatch
25 catch.dispatch: ; preds = %entry
26 %0 = catchswitch within none [label %catch.start] unwind to caller
28 catch.start: ; preds = %catch.dispatch
29 %1 = catchpad within %0 [ptr null]
30 %2 = call ptr @llvm.wasm.get.exception(token %1)
31 %3 = call i32 @llvm.wasm.get.ehselector(token %1)
32 %4 = call ptr @__cxa_begin_catch(ptr %2) [ "funclet"(token %1) ]
33 call void @__cxa_end_catch() [ "funclet"(token %1) ]
34 catchret from %1 to label %try.cont
36 try.cont: ; preds = %entry, %catch.start
40 ; Exception table generation + shared action test.
62 ; There are three landing pads. The second landing pad should share action table
63 ; entries with the first landing pad because they end with the same sequence
64 ; (double -> ...). But the third landing table cannot share action table entries
65 ; with others, so it should create its own entries.
68 ; In static linking, we load GCC_except_table as a constant directly.
69 ; NOPIC: i[[PTR]].const $push[[CONTEXT:.*]]=, __wasm_lpad_context
70 ; NOPIC-NEXT: i[[PTR]].const $push[[EXCEPT_TABLE:.*]]=, GCC_except_table1
71 ; NOPIC-NEXT: i[[PTR]].store {{[48]}}($pop[[CONTEXT]]), $pop[[EXCEPT_TABLE]]
73 ; In case of PIC, we make GCC_except_table symbols a relative on based on
75 ; PIC: global.get $push[[CONTEXT:.*]]=, __wasm_lpad_context@GOT
76 ; PIC-NEXT: local.tee $push{{.*}}=, $[[CONTEXT_LOCAL:.*]]=, $pop[[CONTEXT]]
77 ; PIC: global.get $push[[MEMORY_BASE:.*]]=, __memory_base
78 ; PIC-NEXT: i[[PTR]].const $push[[EXCEPT_TABLE_REL:.*]]=, GCC_except_table1@MBREL
79 ; PIC-NEXT: i[[PTR]].add $push[[EXCEPT_TABLE:.*]]=, $pop[[MEMORY_BASE]], $pop[[EXCEPT_TABLE_REL]]
80 ; PIC-NEXT: i[[PTR]].store {{[48]}}($[[CONTEXT_LOCAL]]), $pop[[EXCEPT_TABLE]]
82 ; CHECK: .section .rodata.gcc_except_table,"",@
83 ; CHECK-NEXT: .p2align 2
84 ; CHECK-NEXT: GCC_except_table[[START:[0-9]+]]:
85 ; CHECK-NEXT: .Lexception0:
86 ; CHECK-NEXT: .int8 255 # @LPStart Encoding = omit
87 ; CHECK-NEXT: .int8 0 # @TType Encoding = absptr
88 ; CHECK-NEXT: .uleb128 .Lttbase0-.Lttbaseref0
89 ; CHECK-NEXT: .Lttbaseref0:
90 ; CHECK-NEXT: .int8 1 # Call site Encoding = uleb128
91 ; CHECK-NEXT: .uleb128 .Lcst_end0-.Lcst_begin0
92 ; CHECK-NEXT: .Lcst_begin0:
93 ; CHECK-NEXT: .int8 0 # >> Call Site 0 <<
94 ; CHECK-NEXT: # On exception at call site 0
95 ; CHECK-NEXT: .int8 7 # Action: 4
96 ; CHECK-NEXT: .int8 1 # >> Call Site 1 <<
97 ; CHECK-NEXT: # On exception at call site 1
98 ; CHECK-NEXT: .int8 3 # Action: 2
99 ; CHECK-NEXT: .int8 2 # >> Call Site 2 <<
100 ; CHECK-NEXT: # On exception at call site 2
101 ; CHECK-NEXT: .int8 11 # Action: 6
102 ; CHECK-NEXT: .Lcst_end0:
103 ; CHECK-NEXT: .int8 1 # >> Action Record 1 <<
104 ; CHECK-NEXT: # Catch TypeInfo 1
105 ; CHECK-NEXT: .int8 0 # No further actions
106 ; CHECK-NEXT: .int8 2 # >> Action Record 2 <<
107 ; CHECK-NEXT: # Catch TypeInfo 2
108 ; CHECK-NEXT: .int8 125 # Continue to action 1
109 ; CHECK-NEXT: .int8 3 # >> Action Record 3 <<
110 ; CHECK-NEXT: # Catch TypeInfo 3
111 ; CHECK-NEXT: .int8 125 # Continue to action 2
112 ; CHECK-NEXT: .int8 4 # >> Action Record 4 <<
113 ; CHECK-NEXT: # Catch TypeInfo 4
114 ; CHECK-NEXT: .int8 125 # Continue to action 3
115 ; CHECK-NEXT: .int8 3 # >> Action Record 5 <<
116 ; CHECK-NEXT: # Catch TypeInfo 3
117 ; CHECK-NEXT: .int8 0 # No further actions
118 ; CHECK-NEXT: .int8 4 # >> Action Record 6 <<
119 ; CHECK-NEXT: # Catch TypeInfo 4
120 ; CHECK-NEXT: .int8 125 # Continue to action 5
121 ; CHECK-NEXT: .p2align 2
122 ; CHECK-NEXT: # >> Catch TypeInfos <<
123 ; CHECK-NEXT: .int[[PTR]] _ZTIi # TypeInfo 4
124 ; CHECK-NEXT: .int[[PTR]] _ZTIf # TypeInfo 3
125 ; CHECK-NEXT: .int[[PTR]] _ZTId # TypeInfo 2
126 ; CHECK-NEXT: .int[[PTR]] 0 # TypeInfo 1
127 ; CHECK-NEXT: .Lttbase0:
128 ; CHECK-NEXT: .p2align 2
129 ; CHECK-NEXT: .LGCC_except_table_end[[END:[0-9]+]]:
130 ; CHECK-NEXT: .size GCC_except_table[[START]], .LGCC_except_table_end[[END]]-GCC_except_table[[START]]
131 define void @test1() personality ptr @__gxx_wasm_personality_v0 {
133 invoke void @may_throw()
134 to label %try.cont unwind label %catch.dispatch
136 catch.dispatch: ; preds = %entry
137 %0 = catchswitch within none [label %catch.start] unwind to caller
139 catch.start: ; preds = %catch.dispatch
140 %1 = catchpad within %0 [ptr @_ZTIi, ptr @_ZTIf, ptr @_ZTId, ptr null]
141 %2 = call ptr @llvm.wasm.get.exception(token %1)
142 %3 = call i32 @llvm.wasm.get.ehselector(token %1)
143 %4 = call i32 @llvm.eh.typeid.for(ptr @_ZTIi)
144 %matches = icmp eq i32 %3, %4
145 br i1 %matches, label %catch10, label %catch.fallthrough
147 catch10: ; preds = %catch.start
148 %5 = call ptr @__cxa_begin_catch(ptr %2) [ "funclet"(token %1) ]
149 %6 = load i32, ptr %5, align 4
150 call void @__cxa_end_catch() [ "funclet"(token %1) ]
151 catchret from %1 to label %try.cont
153 try.cont: ; preds = %entry, %catch, %catch4, %catch7, %catch10
154 invoke void @may_throw()
155 to label %try.cont23 unwind label %catch.dispatch14
157 catch.dispatch14: ; preds = %try.cont
158 %7 = catchswitch within none [label %catch.start15] unwind to caller
160 catch.start15: ; preds = %catch.dispatch14
161 %8 = catchpad within %7 [ptr @_ZTId, ptr null]
162 %9 = call ptr @llvm.wasm.get.exception(token %8)
163 %10 = call i32 @llvm.wasm.get.ehselector(token %8)
164 %11 = call i32 @llvm.eh.typeid.for(ptr @_ZTId)
165 %matches16 = icmp eq i32 %10, %11
166 %12 = call ptr @__cxa_begin_catch(ptr %9) [ "funclet"(token %8) ]
167 br i1 %matches16, label %catch20, label %catch17
169 catch20: ; preds = %catch.start15
170 %13 = load double, ptr %12, align 8
171 call void @__cxa_end_catch() [ "funclet"(token %8) ]
172 catchret from %8 to label %try.cont23
174 try.cont23: ; preds = %try.cont, %catch17, %catch20
175 invoke void @may_throw()
176 to label %try.cont36 unwind label %catch.dispatch25
178 catch.dispatch25: ; preds = %try.cont23
179 %14 = catchswitch within none [label %catch.start26] unwind to caller
181 catch.start26: ; preds = %catch.dispatch25
182 %15 = catchpad within %14 [ptr @_ZTIi, ptr @_ZTIf]
183 %16 = call ptr @llvm.wasm.get.exception(token %15)
184 %17 = call i32 @llvm.wasm.get.ehselector(token %15)
185 %18 = call i32 @llvm.eh.typeid.for(ptr @_ZTIi)
186 %matches27 = icmp eq i32 %17, %18
187 br i1 %matches27, label %catch33, label %catch.fallthrough28
189 catch33: ; preds = %catch.start26
190 %19 = call ptr @__cxa_begin_catch(ptr %16) [ "funclet"(token %15) ]
191 %20 = load i32, ptr %19, align 4
192 call void @__cxa_end_catch() [ "funclet"(token %15) ]
193 catchret from %15 to label %try.cont36
195 catch.fallthrough28: ; preds = %catch.start26
196 %21 = call i32 @llvm.eh.typeid.for(ptr @_ZTIf)
197 %matches29 = icmp eq i32 %17, %21
198 br i1 %matches29, label %catch30, label %rethrow
200 catch30: ; preds = %catch.fallthrough28
201 %22 = call ptr @__cxa_begin_catch(ptr %16) [ "funclet"(token %15) ]
202 %23 = load float, ptr %22, align 4
203 call void @__cxa_end_catch() [ "funclet"(token %15) ]
204 catchret from %15 to label %try.cont36
206 rethrow: ; preds = %catch.fallthrough28
207 call void @__cxa_rethrow() [ "funclet"(token %15) ]
210 try.cont36: ; preds = %try.cont23, %catch30, %catch33
213 catch17: ; preds = %catch.start15
214 call void @__cxa_end_catch() [ "funclet"(token %8) ]
215 catchret from %8 to label %try.cont23
217 catch.fallthrough: ; preds = %catch.start
218 %24 = call i32 @llvm.eh.typeid.for(ptr @_ZTIf)
219 %matches1 = icmp eq i32 %3, %24
220 br i1 %matches1, label %catch7, label %catch.fallthrough2
222 catch7: ; preds = %catch.fallthrough
223 %25 = call ptr @__cxa_begin_catch(ptr %2) [ "funclet"(token %1) ]
224 %26 = load float, ptr %25, align 4
225 call void @__cxa_end_catch() [ "funclet"(token %1) ]
226 catchret from %1 to label %try.cont
228 catch.fallthrough2: ; preds = %catch.fallthrough
229 %27 = call i32 @llvm.eh.typeid.for(ptr @_ZTId)
230 %matches3 = icmp eq i32 %3, %27
231 %28 = call ptr @__cxa_begin_catch(ptr %2) [ "funclet"(token %1) ]
232 br i1 %matches3, label %catch4, label %catch
234 catch4: ; preds = %catch.fallthrough2
235 %29 = load double, ptr %28, align 8
236 call void @__cxa_end_catch() [ "funclet"(token %1) ]
237 catchret from %1 to label %try.cont
239 catch: ; preds = %catch.fallthrough2
240 call void @__cxa_end_catch() [ "funclet"(token %1) ]
241 catchret from %1 to label %try.cont
244 declare void @may_throw()
245 ; Function Attrs: nounwind
246 declare i32 @llvm.eh.typeid.for(ptr) #0
247 ; Function Attrs: nounwind
248 declare ptr @llvm.wasm.get.exception(token) #0
249 ; Function Attrs: nounwind
250 declare i32 @llvm.wasm.get.ehselector(token) #0
251 declare void @__cxa_rethrow()
252 declare ptr @__cxa_begin_catch(ptr)
253 declare void @__cxa_end_catch()
254 declare i32 @__gxx_wasm_personality_v0(...)
256 attributes #0 = { nounwind }