| ; RUN: opt -mtriple=x86_64-pc-windows-msvc -winehprepare -S -o - < %s | FileCheck %s |
| |
| ; This test is based on the following code: |
| ; |
| ; struct SomeData { |
| ; int a; |
| ; int b; |
| ; }; |
| ; |
| ; void may_throw(); |
| ; void does_not_throw(int i); |
| ; void dump(int *, int, SomeData&); |
| ; |
| ; void test() { |
| ; int NumExceptions = 0; |
| ; int ExceptionVal[10]; |
| ; SomeData Data = { 0, 0 }; |
| ; |
| ; for (int i = 0; i < 10; ++i) { |
| ; try { |
| ; may_throw(); |
| ; Data.a += i; |
| ; } |
| ; catch (int e) { |
| ; ExceptionVal[NumExceptions] = e; |
| ; ++NumExceptions; |
| ; if (e == i) |
| ; Data.b += e; |
| ; else |
| ; Data.a += e; |
| ; } |
| ; does_not_throw(NumExceptions); |
| ; } |
| ; dump(ExceptionVal, NumExceptions, Data); |
| ; } |
| |
| ; ModuleID = 'cppeh-frame-vars.cpp' |
| target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" |
| target triple = "x86_64-pc-windows-msvc" |
| |
| %rtti.TypeDescriptor2 = type { i8**, i8*, [3 x i8] } |
| %struct.SomeData = type { i32, i32 } |
| |
| $"\01??_R0H@8" = comdat any |
| |
| @"\01??_7type_info@@6B@" = external constant i8* |
| @"\01??_R0H@8" = linkonce_odr global %rtti.TypeDescriptor2 { i8** @"\01??_7type_info@@6B@", i8* null, [3 x i8] c".H\00" }, comdat |
| |
| ; The function entry should be rewritten like this. |
| ; CHECK: define void @"\01?test@@YAXXZ"() #0 { |
| ; CHECK: entry: |
| ; CHECK: [[NUMEXCEPTIONS_PTR:\%.+]] = alloca i32, align 4 |
| ; CHECK: [[EXCEPTIONVAL_PTR:\%.+]] = alloca [10 x i32], align 16 |
| ; CHECK: [[DATA_PTR:\%.+]] = alloca %struct.SomeData, align 4 |
| ; CHECK: [[I_PTR:\%.+]] = alloca i32, align 4 |
| ; CHECK: [[E_PTR:\%.+]] = alloca i32, align 4 |
| ; CHECK: store i32 0, i32* [[NUMEXCEPTIONS_PTR]], align 4 |
| ; CHECK: [[TMP:\%.+]] = bitcast %struct.SomeData* [[DATA_PTR]] to i8* |
| ; CHECK: call void @llvm.memset(i8* [[TMP]], i8 0, i64 8, i32 4, i1 false) |
| ; CHECK: store i32 0, i32* [[I_PTR]], align 4 |
| ; CHECK: call void (...)* @llvm.frameescape(i32* [[E_PTR]], i32* [[NUMEXCEPTIONS_PTR]], [10 x i32]* [[EXCEPTIONVAL_PTR]], i32* [[I_PTR]], %struct.SomeData* [[DATA_PTR]]) |
| ; CHECK: br label %for.cond |
| |
| ; Function Attrs: uwtable |
| define void @"\01?test@@YAXXZ"() #0 { |
| entry: |
| %NumExceptions = alloca i32, align 4 |
| %ExceptionVal = alloca [10 x i32], align 16 |
| %Data = alloca %struct.SomeData, align 4 |
| %i = alloca i32, align 4 |
| %exn.slot = alloca i8* |
| %ehselector.slot = alloca i32 |
| %e = alloca i32, align 4 |
| store i32 0, i32* %NumExceptions, align 4 |
| %tmp = bitcast %struct.SomeData* %Data to i8* |
| call void @llvm.memset(i8* %tmp, i8 0, i64 8, i32 4, i1 false) |
| store i32 0, i32* %i, align 4 |
| br label %for.cond |
| |
| for.cond: ; preds = %for.inc, %entry |
| %tmp1 = load i32, i32* %i, align 4 |
| %cmp = icmp slt i32 %tmp1, 10 |
| br i1 %cmp, label %for.body, label %for.end |
| |
| ; CHECK: for.body: |
| ; CHECK: invoke void @"\01?may_throw@@YAXXZ"() |
| ; CHECK: to label %invoke.cont unwind label %[[LPAD_LABEL:lpad[0-9]+]] |
| |
| for.body: ; preds = %for.cond |
| invoke void @"\01?may_throw@@YAXXZ"() |
| to label %invoke.cont unwind label %lpad |
| |
| invoke.cont: ; preds = %for.body |
| %tmp2 = load i32, i32* %i, align 4 |
| %a = getelementptr inbounds %struct.SomeData, %struct.SomeData* %Data, i32 0, i32 0 |
| %tmp3 = load i32, i32* %a, align 4 |
| %add = add nsw i32 %tmp3, %tmp2 |
| store i32 %add, i32* %a, align 4 |
| br label %try.cont |
| |
| ; CHECK: [[LPAD_LABEL]]:{{[ ]+}}; preds = %for.body |
| ; CHECK: [[LPAD_VAL:\%.+]] = landingpad { i8*, i32 } personality i8* bitcast (i32 (...)* @__CxxFrameHandler3 to i8*) |
| ; CHECK-NEXT: catch i8* bitcast (%rtti.TypeDescriptor2* @"\01??_R0H@8" to i8*) |
| ; CHECK-NEXT: [[RECOVER:\%.+]] = call i8* (...)* @llvm.eh.actions({ i8*, i32 } [[LPAD_VAL]], i32 0, i8* bitcast (%rtti.TypeDescriptor2* @"\01??_R0H@8" to i8*), i32* %e, i8* bitcast (i8* (i8*, i8*)* @"\01?test@@YAXXZ.catch" to i8*)) |
| ; CHECK-NEXT: indirectbr i8* [[RECOVER]], [label %try.cont] |
| |
| lpad: ; preds = %for.body |
| %tmp4 = landingpad { i8*, i32 } personality i8* bitcast (i32 (...)* @__CxxFrameHandler3 to i8*) |
| catch i8* bitcast (%rtti.TypeDescriptor2* @"\01??_R0H@8" to i8*) |
| %tmp5 = extractvalue { i8*, i32 } %tmp4, 0 |
| store i8* %tmp5, i8** %exn.slot |
| %tmp6 = extractvalue { i8*, i32 } %tmp4, 1 |
| store i32 %tmp6, i32* %ehselector.slot |
| br label %catch.dispatch |
| |
| ; CHECK-NOT: catch.dispatch: |
| |
| catch.dispatch: ; preds = %lpad |
| %sel = load i32, i32* %ehselector.slot |
| %tmp7 = call i32 @llvm.eh.typeid.for(i8* bitcast (%rtti.TypeDescriptor2* @"\01??_R0H@8" to i8*)) #1 |
| %matches = icmp eq i32 %sel, %tmp7 |
| br i1 %matches, label %catch, label %eh.resume |
| |
| ; CHECK-NOT: catch: |
| |
| catch: ; preds = %catch.dispatch |
| %exn = load i8*, i8** %exn.slot |
| %e.i8 = bitcast i32* %e to i8* |
| call void @llvm.eh.begincatch(i8* %exn, i8* %e.i8) #1 |
| %tmp11 = load i32, i32* %e, align 4 |
| %tmp12 = load i32, i32* %NumExceptions, align 4 |
| %idxprom = sext i32 %tmp12 to i64 |
| %arrayidx = getelementptr inbounds [10 x i32], [10 x i32]* %ExceptionVal, i32 0, i64 %idxprom |
| store i32 %tmp11, i32* %arrayidx, align 4 |
| %tmp13 = load i32, i32* %NumExceptions, align 4 |
| %inc = add nsw i32 %tmp13, 1 |
| store i32 %inc, i32* %NumExceptions, align 4 |
| %tmp14 = load i32, i32* %e, align 4 |
| %tmp15 = load i32, i32* %i, align 4 |
| %cmp1 = icmp eq i32 %tmp14, %tmp15 |
| br i1 %cmp1, label %if.then, label %if.else |
| |
| ; CHECK-NOT: if.then: |
| |
| if.then: ; preds = %catch |
| %tmp16 = load i32, i32* %e, align 4 |
| %b = getelementptr inbounds %struct.SomeData, %struct.SomeData* %Data, i32 0, i32 1 |
| %tmp17 = load i32, i32* %b, align 4 |
| %add2 = add nsw i32 %tmp17, %tmp16 |
| store i32 %add2, i32* %b, align 4 |
| br label %if.end |
| |
| ; CHECK-NOT: if.else: |
| |
| if.else: ; preds = %catch |
| %tmp18 = load i32, i32* %e, align 4 |
| %a3 = getelementptr inbounds %struct.SomeData, %struct.SomeData* %Data, i32 0, i32 0 |
| %tmp19 = load i32, i32* %a3, align 4 |
| %add4 = add nsw i32 %tmp19, %tmp18 |
| store i32 %add4, i32* %a3, align 4 |
| br label %if.end |
| |
| ; CHECK-NOT: if.end: |
| |
| if.end: ; preds = %if.else, %if.then |
| call void @llvm.eh.endcatch() #1 |
| br label %try.cont |
| |
| try.cont: ; preds = %if.end, %invoke.cont |
| %tmp20 = load i32, i32* %NumExceptions, align 4 |
| call void @"\01?does_not_throw@@YAXH@Z"(i32 %tmp20) |
| br label %for.inc |
| |
| for.inc: ; preds = %try.cont |
| %tmp21 = load i32, i32* %i, align 4 |
| %inc5 = add nsw i32 %tmp21, 1 |
| store i32 %inc5, i32* %i, align 4 |
| br label %for.cond |
| |
| for.end: ; preds = %for.cond |
| %tmp22 = load i32, i32* %NumExceptions, align 4 |
| %arraydecay = getelementptr inbounds [10 x i32], [10 x i32]* %ExceptionVal, i32 0, i32 0 |
| call void @"\01?dump@@YAXPEAHHAEAUSomeData@@@Z"(i32* %arraydecay, i32 %tmp22, %struct.SomeData* dereferenceable(8) %Data) |
| ret void |
| |
| ; CHECK-NOT: eh.resume: |
| |
| eh.resume: ; preds = %catch.dispatch |
| %exn6 = load i8*, i8** %exn.slot |
| %sel7 = load i32, i32* %ehselector.slot |
| %lpad.val = insertvalue { i8*, i32 } undef, i8* %exn6, 0 |
| %lpad.val8 = insertvalue { i8*, i32 } %lpad.val, i32 %sel7, 1 |
| resume { i8*, i32 } %lpad.val8 |
| |
| ; CHECK: } |
| } |
| |
| ; The following catch handler should be outlined. |
| ; CHECK-LABEL: define internal i8* @"\01?test@@YAXXZ.catch"(i8*, i8*) { |
| ; CHECK: entry: |
| ; CHECK: [[RECOVER_E:\%.+]] = call i8* @llvm.framerecover(i8* bitcast (void ()* @"\01?test@@YAXXZ" to i8*), i8* %1, i32 0) |
| ; CHECK: [[E_PTR1:\%.+]] = bitcast i8* [[RECOVER_E]] to i32* |
| ; CHECK: [[RECOVER_NUMEXCEPTIONS:\%.+]] = call i8* @llvm.framerecover(i8* bitcast (void ()* @"\01?test@@YAXXZ" to i8*), i8* %1, i32 1) |
| ; CHECK: [[NUMEXCEPTIONS_PTR1:\%.+]] = bitcast i8* [[RECOVER_NUMEXCEPTIONS]] to i32* |
| ; CHECK: [[RECOVER_EXCEPTIONVAL:\%.+]] = call i8* @llvm.framerecover(i8* bitcast (void ()* @"\01?test@@YAXXZ" to i8*), i8* %1, i32 2) |
| ; CHECK: [[EXCEPTIONVAL_PTR1:\%.+]] = bitcast i8* [[RECOVER_EXCEPTIONVAL]] to [10 x i32]* |
| ; CHECK: [[RECOVER_I:\%.+]] = call i8* @llvm.framerecover(i8* bitcast (void ()* @"\01?test@@YAXXZ" to i8*), i8* %1, i32 3) |
| ; CHECK: [[I_PTR1:\%.+]] = bitcast i8* [[RECOVER_I]] to i32* |
| ; CHECK: [[RECOVER_DATA:\%.+]] = call i8* @llvm.framerecover(i8* bitcast (void ()* @"\01?test@@YAXXZ" to i8*), i8* %1, i32 4) |
| ; CHECK: [[DATA_PTR1:\%.+]] = bitcast i8* [[RECOVER_DATA]] to %struct.SomeData* |
| ; CHECK: [[TMP:\%.+]] = load i32, i32* [[E_PTR1]], align 4 |
| ; CHECK: [[TMP1:\%.+]] = load i32, i32* [[NUMEXCEPTIONS_PTR]], align 4 |
| ; CHECK: [[IDXPROM:\%.+]] = sext i32 [[TMP1]] to i64 |
| ; CHECK: [[ARRAYIDX:\%.+]] = getelementptr inbounds [10 x i32], [10 x i32]* [[EXCEPTIONVAL_PTR1]], i32 0, i64 [[IDXPROM]] |
| ; CHECK: store i32 [[TMP]], i32* [[ARRAYIDX]], align 4 |
| ; CHECK: [[TMP2:\%.+]] = load i32, i32* [[NUMEXCEPTIONS_PTR1]], align 4 |
| ; CHECK: [[INC:\%.+]] = add nsw i32 [[TMP2]], 1 |
| ; CHECK: store i32 [[INC]], i32* [[NUMEXCEPTIONS_PTR]], align 4 |
| ; CHECK: [[TMP3:\%.+]] = load i32, i32* [[E_PTR1]], align 4 |
| ; CHECK: [[TMP4:\%.+]] = load i32, i32* [[I_PTR1]], align 4 |
| ; CHECK: [[CMP:\%.+]] = icmp eq i32 [[TMP3]], [[TMP4]] |
| ; CHECK: br i1 [[CMP]], label %if.then, label %if.else |
| ; |
| ; CHECK: if.then: ; preds = %entry |
| ; CHECK: [[TMP5:\%.+]] = load i32, i32* [[E_PTR1]], align 4 |
| ; CHECK: [[B_PTR:\%.+]] = getelementptr inbounds %struct.SomeData, %struct.SomeData* [[DATA_PTR1]], i32 0, i32 1 |
| ; CHECK: [[TMP6:\%.+]] = load i32, i32* [[B_PTR]], align 4 |
| ; CHECK: %add2 = add nsw i32 [[TMP6]], [[TMP5]] |
| ; CHECK: store i32 [[ADD:\%.+]], i32* [[B_PTR]], align 4 |
| ; CHECK: br label %if.end |
| ; |
| ; CHECK: if.else: ; preds = %entry |
| ; CHECK: [[TMP7:\%.+]] = load i32, i32* %e, align 4 |
| ; CHECK: [[A3:\%.+]] = getelementptr inbounds %struct.SomeData, %struct.SomeData* %Data, i32 0, i32 0 |
| ; CHECK: [[TMP8:\%.+]] = load i32, i32* %a3, align 4 |
| ; CHECK: [[ADD1:\%.+]] = add nsw i32 [[TMP8]], [[TMP7]] |
| ; CHECK: store i32 [[ADD1]], i32* [[A3]], align 4 |
| ; CHECK: br label %if.end |
| ; |
| ; CHECK: if.end: ; preds = %if.else, %if.then |
| ; CHECK: ret i8* blockaddress(@"\01?test@@YAXXZ", %try.cont) |
| ; CHECK: } |
| |
| |
| ; Function Attrs: nounwind |
| declare void @llvm.memset(i8* nocapture, i8, i64, i32, i1) #1 |
| |
| declare void @"\01?may_throw@@YAXXZ"() #2 |
| |
| declare i32 @__CxxFrameHandler3(...) |
| |
| ; Function Attrs: nounwind readnone |
| declare i32 @llvm.eh.typeid.for(i8*) #3 |
| |
| declare void @llvm.eh.begincatch(i8*, i8*) |
| |
| declare void @llvm.eh.endcatch() |
| |
| declare void @"\01?does_not_throw@@YAXH@Z"(i32) #2 |
| |
| declare void @"\01?dump@@YAXPEAHHAEAUSomeData@@@Z"(i32*, i32, %struct.SomeData* dereferenceable(8)) #2 |
| |
| attributes #0 = { uwtable "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" } |
| attributes #1 = { nounwind } |
| attributes #2 = { "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" } |
| attributes #3 = { nounwind readnone } |
| |
| !llvm.module.flags = !{!0} |
| !llvm.ident = !{!1} |
| |
| !0 = !{i32 1, !"PIC Level", i32 2} |
| !1 = !{!"clang version 3.7.0 (trunk 228868)"} |