| ; 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); |
| ; } |
| ; |
| ; Unlike the cppeh-frame-vars.ll test, this test was generated using -O2 |
| ; optimization, which results in non-alloca values being used in the |
| ; catch handler. |
| |
| ; 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"() |
| ; CHECK: entry: |
| ; CHECK: [[NUMEXCEPTIONS_REGMEM:\%.+]] = alloca i32 |
| ; CHECK: [[I_REGMEM:\%.+]] = alloca i32 |
| ; CHECK: [[B_REGMEM:\%.+]] = alloca i32* |
| ; CHECK: [[A_REGMEM:\%.+]] = alloca i32* |
| ; CHECK: [[E_PTR:\%.+]] = alloca i32, align 4 |
| ; CHECK: [[EXCEPTIONVAL:\%.+]] = alloca [10 x i32], align 16 |
| ; CHECK: [[DATA_PTR:\%.+]] = alloca i64, align 8 |
| ; CHECK: [[TMPCAST:\%.+]] = bitcast i64* [[DATA_PTR]] to %struct.SomeData* |
| ; CHECK: [[TMP:\%.+]] = bitcast [10 x i32]* [[EXCEPTIONVAL]] to i8* |
| ; CHECK: call void @llvm.lifetime.start(i64 40, i8* [[TMP]]) |
| ; CHECK: store i64 0, i64* [[DATA_PTR]], align 8 |
| ; CHECK: [[A_PTR:\%.+]] = bitcast i64* [[DATA_PTR]] to i32* |
| ; CHECK: store i32* [[A_PTR]], i32** [[A_REGMEM]] |
| ; CHECK: [[B_PTR:\%.+]] = getelementptr inbounds %struct.SomeData, %struct.SomeData* [[TMPCAST]], i64 0, i32 1 |
| ; CHECK: store i32* [[B_PTR]], i32** [[B_REGMEM]] |
| ; CHECK: call void (...) @llvm.localescape(i32* %e, i32* %NumExceptions.020.reg2mem, [10 x i32]* [[EXCEPTIONVAL]], i32* %inc.reg2mem, i32* [[I_REGMEM]], i32** [[A_REGMEM]], i32** [[B_REGMEM]]) |
| ; CHECK: br label %for.body |
| |
| ; Function Attrs: uwtable |
| define void @"\01?test@@YAXXZ"() #0 personality i8* bitcast (i32 (...)* @__CxxFrameHandler3 to i8*) { |
| entry: |
| %e = alloca i32, align 4 |
| %ExceptionVal = alloca [10 x i32], align 16 |
| %Data = alloca i64, align 8 |
| %tmpcast = bitcast i64* %Data to %struct.SomeData* |
| %0 = bitcast [10 x i32]* %ExceptionVal to i8* |
| call void @llvm.lifetime.start(i64 40, i8* %0) #1 |
| store i64 0, i64* %Data, align 8 |
| %a = bitcast i64* %Data to i32* |
| %b = getelementptr inbounds %struct.SomeData, %struct.SomeData* %tmpcast, i64 0, i32 1 |
| br label %for.body |
| |
| ; CHECK: for.body: |
| ; CHECK: [[NUMEXCEPTIONS_PHI:\%.*]] = phi i32 [ 0, %entry ], [ {{\%NumExceptions.*}}, %try.cont ] |
| ; CHECK: [[I_PHI:\%.*]] = phi i32 [ 0, %entry ], [ {{\%inc.*}}, %try.cont ] |
| ; CHECK: store i32 [[I_PHI]], i32* [[I_REGMEM]] |
| ; CHECK: store i32 [[NUMEXCEPTIONS_PHI]], i32* [[NUMEXCEPTIONS_REGMEM]] |
| ; CHECK: invoke void @"\01?may_throw@@YAXXZ"() |
| for.body: ; preds = %entry, %try.cont |
| %NumExceptions.020 = phi i32 [ 0, %entry ], [ %NumExceptions.1, %try.cont ] |
| %i.019 = phi i32 [ 0, %entry ], [ %inc5, %try.cont ] |
| invoke void @"\01?may_throw@@YAXXZ"() |
| to label %invoke.cont unwind label %lpad |
| |
| ; CHECK: invoke.cont: ; preds = %for.body |
| ; CHECK: [[A_RELOAD:\%.+]] = load i32*, i32** [[A_REGMEM]] |
| ; CHECK: [[TMP1:\%.+]] = load i32, i32* [[A_RELOAD]], align 8 |
| ; CHECK: [[I_RELOAD:\%.+]] = load i32, i32* [[I_REGMEM]] |
| ; CHECK: [[ADD:\%.+]] = add nsw i32 [[TMP1]], [[I_RELOAD]] |
| ; CHECK: [[A_RELOAD1:\%.+]] = load i32*, i32** [[A_REGMEM]] |
| ; CHECK: [[NUMEXCEPTIONS_RELOAD:\%.+]] = load i32, i32* [[NUMEXCEPTIONS_REGMEM]] |
| ; CHECK: br label %try.cont |
| invoke.cont: ; preds = %for.body |
| %1 = load i32, i32* %a, align 8, !tbaa !2 |
| %add = add nsw i32 %1, %i.019 |
| store i32 %add, i32* %a, align 8, !tbaa !2 |
| br label %try.cont |
| |
| ; CHECK: [[LPAD_LABEL:lpad[0-9]*]]:{{[ ]+}}; preds = %for.body |
| ; CHECK: landingpad { i8*, i32 } |
| ; CHECK-NEXT: catch i8* bitcast (%rtti.TypeDescriptor2* @"\01??_R0H@8" to i8*) |
| ; CHECK-NEXT: [[RECOVER:\%.+]] = call i8* (...) @llvm.eh.actions(i32 1, i8* bitcast (%rtti.TypeDescriptor2* @"\01??_R0H@8" to i8*), i32 0, i8* (i8*, i8*)* @"\01?test@@YAXXZ.catch") |
| ; CHECK-NEXT: indirectbr i8* [[RECOVER]], [label %[[SPLIT_RECOVER_BB:.*]]] |
| |
| lpad: ; preds = %for.body |
| %2 = landingpad { i8*, i32 } |
| catch i8* bitcast (%rtti.TypeDescriptor2* @"\01??_R0H@8" to i8*) |
| %3 = extractvalue { i8*, i32 } %2, 1 |
| %4 = tail call i32 @llvm.eh.typeid.for(i8* bitcast (%rtti.TypeDescriptor2* @"\01??_R0H@8" to i8*)) #1 |
| %matches = icmp eq i32 %3, %4 |
| br i1 %matches, label %catch, label %eh.resume |
| |
| ; CHECK-NOT: catch: |
| |
| catch: ; preds = %lpad |
| %5 = extractvalue { i8*, i32 } %2, 0 |
| %e.i8 = bitcast i32* %e to i8* |
| call void @llvm.eh.begincatch(i8* %5, i8* %e.i8) #1 |
| %tmp8 = load i32, i32* %e, align 4, !tbaa !7 |
| %idxprom = sext i32 %NumExceptions.020 to i64 |
| %arrayidx = getelementptr inbounds [10 x i32], [10 x i32]* %ExceptionVal, i64 0, i64 %idxprom |
| store i32 %tmp8, i32* %arrayidx, align 4, !tbaa !7 |
| %inc = add nsw i32 %NumExceptions.020, 1 |
| %cmp1 = icmp eq i32 %tmp8, %i.019 |
| br i1 %cmp1, label %if.then, label %if.else |
| |
| if.then: ; preds = %catch |
| %tmp9 = load i32, i32* %b, align 4, !tbaa !8 |
| %add2 = add nsw i32 %tmp9, %i.019 |
| store i32 %add2, i32* %b, align 4, !tbaa !8 |
| br label %if.end |
| |
| ; CHECK-NOT: if.else: |
| |
| if.else: ; preds = %catch |
| %tmp10 = load i32, i32* %a, align 8, !tbaa !2 |
| %add4 = add nsw i32 %tmp10, %tmp8 |
| store i32 %add4, i32* %a, align 8, !tbaa !2 |
| br label %if.end |
| |
| ; CHECK-NOT: if.end: |
| ; CHECK: [[SPLIT_RECOVER_BB]]: |
| ; CHECK: [[INC_RELOAD:\%.*]] = load i32, i32* |
| ; CHECK: br label %try.cont |
| |
| if.end: ; preds = %if.else, %if.then |
| tail call void @llvm.eh.endcatch() #1 |
| br label %try.cont |
| |
| ; CHECK: try.cont:{{[ ]+}}; preds = %[[SPLIT_RECOVER_BB]], %invoke.cont |
| ; CHECK: [[NUMEXCEPTIONS_PHI:\%.*]] = phi i32 [ [[NUMEXCEPTIONS_RELOAD]], %invoke.cont ], [ [[INC_RELOAD]], %[[SPLIT_RECOVER_BB]] ] |
| ; CHECK: tail call void @"\01?does_not_throw@@YAXH@Z"(i32 [[NUMEXCEPTIONS_PHI]]) |
| ; CHECK: [[I_RELOAD:\%.+]] = load i32, i32* [[I_REGMEM]] |
| ; CHECK: [[INC:\%.+]] = add nuw nsw i32 [[I_RELOAD]], 1 |
| ; CHECK: [[CMP:\%.+]] = icmp slt i32 [[INC]], 10 |
| ; CHECK: br i1 [[CMP]], label %for.body, label %for.end |
| |
| try.cont: ; preds = %if.end, %invoke.cont |
| %NumExceptions.1 = phi i32 [ %NumExceptions.020, %invoke.cont ], [ %inc, %if.end ] |
| tail call void @"\01?does_not_throw@@YAXH@Z"(i32 %NumExceptions.1) |
| %inc5 = add nuw nsw i32 %i.019, 1 |
| %cmp = icmp slt i32 %inc5, 10 |
| br i1 %cmp, label %for.body, label %for.end |
| |
| for.end: ; preds = %try.cont |
| %NumExceptions.1.lcssa = phi i32 [ %NumExceptions.1, %try.cont ] |
| %arraydecay = getelementptr inbounds [10 x i32], [10 x i32]* %ExceptionVal, i64 0, i64 0 |
| call void @"\01?dump@@YAXPEAHHAEAUSomeData@@@Z"(i32* %arraydecay, i32 %NumExceptions.1.lcssa, %struct.SomeData* dereferenceable(8) %tmpcast) |
| call void @llvm.lifetime.end(i64 40, i8* %0) #1 |
| ret void |
| |
| eh.resume: ; preds = %lpad |
| %.lcssa = phi { i8*, i32 } [ %2, %lpad ] |
| resume { i8*, i32 } %.lcssa |
| } |
| |
| ; The following catch handler should be outlined. |
| ; CHECK: define internal i8* @"\01?test@@YAXXZ.catch"(i8*, i8*) |
| ; CHECK: entry: |
| ; CHECK: [[RECOVER_E:\%.+]] = call i8* @llvm.localrecover(i8* bitcast (void ()* @"\01?test@@YAXXZ" to i8*), i8* %1, i32 0) |
| ; CHECK: [[E_PTR:\%.+]] = bitcast i8* [[RECOVER_E]] to i32* |
| ; CHECK: [[RECOVER_NUMEXCEPTIONS:\%.+]] = call i8* @llvm.localrecover(i8* bitcast (void ()* @"\01?test@@YAXXZ" to i8*), i8* %1, i32 1) |
| ; CHECK: [[NUMEXCEPTIONS_REGMEM:\%.+]] = bitcast i8* [[RECOVER_NUMEXCEPTIONS]] to i32* |
| ; CHECK: [[RECOVER_EXCEPTIONVAL:\%.+]] = call i8* @llvm.localrecover(i8* bitcast (void ()* @"\01?test@@YAXXZ" to i8*), i8* %1, i32 2) |
| ; CHECK: [[EXCEPTIONVAL:\%.+]] = bitcast i8* [[RECOVER_EXCEPTIONVAL]] to [10 x i32]* |
| ; CHECK: [[RECOVER_INC:\%.+]] = call i8* @llvm.localrecover(i8* bitcast (void ()* @"\01?test@@YAXXZ" to i8*), i8* %1, i32 3) |
| ; CHECK: [[INC_REGMEM:\%.+]] = bitcast i8* [[RECOVER_INC]] to i32* |
| ; CHECK: [[RECOVER_I:\%.+]] = call i8* @llvm.localrecover(i8* bitcast (void ()* @"\01?test@@YAXXZ" to i8*), i8* %1, i32 4) |
| ; CHECK: [[I_REGMEM:\%.+]] = bitcast i8* [[RECOVER_I]] to i32* |
| ; CHECK: [[RECOVER_A:\%.+]] = call i8* @llvm.localrecover(i8* bitcast (void ()* @"\01?test@@YAXXZ" to i8*), i8* %1, i32 5) |
| ; CHECK: [[A_REGMEM:\%.+]] = bitcast i8* [[RECOVER_A]] to i32** |
| ; CHECK: [[RECOVER_B:\%.+]] = call i8* @llvm.localrecover(i8* bitcast (void ()* @"\01?test@@YAXXZ" to i8*), i8* %1, i32 6) |
| ; CHECK: [[B_REGMEM:\%.+]] = bitcast i8* [[RECOVER_B]] to i32** |
| ; CHECK: [[E_I8PTR:\%.+]] = bitcast i32* [[E_PTR]] to i8* |
| ; CHECK: [[TMP:\%.+]] = load i32, i32* [[E_PTR]], align 4 |
| ; CHECK: [[NUMEXCEPTIONS_RELOAD:\%.+]] = load i32, i32* [[NUMEXCEPTIONS_REGMEM]] |
| ; CHECK: [[IDXPROM:\%.+]] = sext i32 [[NUMEXCEPTIONS_RELOAD]] to i64 |
| ; CHECK: [[ARRAYIDX:\%.+]] = getelementptr inbounds [10 x i32], [10 x i32]* [[EXCEPTIONVAL]], i64 0, i64 [[IDXPROM]] |
| ; CHECK: store i32 [[TMP]], i32* [[ARRAYIDX]], align 4 |
| ; CHECK: [[NUMEXCEPTIONS_RELOAD:\%.+]] = load i32, i32* [[NUMEXCEPTIONS_REGMEM]] |
| ; CHECK: [[INC:\%.+]] = add nsw i32 [[NUMEXCEPTIONS_RELOAD]], 1 |
| ; CHECK: [[CMP:\%.+]] = icmp eq i32 [[TMP]], [[I_RELOAD]] |
| ; CHECK: br i1 [[CMP]], label %if.then, label %if.else |
| ; |
| ; CHECK: if.then:{{[ ]+}}; preds = %entry |
| ; CHECK: [[B_RELOAD:\%.+]] = load i32*, i32** [[B_REGMEM]] |
| ; CHECK: [[TMP1:\%.+]] = load i32, i32* [[B_RELOAD]], align 4 |
| ; CHECK: [[I_RELOAD:\%.+]] = load i32, i32* [[I_REGMEM]] |
| ; CHECK: [[ADD:\%.+]] = add nsw i32 [[TMP1]], [[I_RELOAD]] |
| ; CHECK: [[B_RELOAD:\%.+]] = load i32*, i32** [[B_REGMEM]] |
| ; CHECK: store i32 [[ADD]], i32* [[B_RELOAD]], align 4 |
| ; CHECK: br label %if.end |
| ; |
| ; CHECK: if.else:{{[ ]+}}; preds = %entry |
| ; CHECK: [[A_RELOAD:\%.+]] = load i32*, i32** [[A_REGMEM]] |
| ; CHECK: [[TMP2:\%.+]] = load i32, i32* [[A_RELOAD]], align 8 |
| ; CHECK: [[ADD2:\%.+]] = add nsw i32 [[TMP2]], [[TMP]] |
| ; CHECK: [[A_RELOAD:\%.+]] = load i32*, i32** [[A_REGMEM]] |
| ; CHECK: store i32 [[ADD2]], i32* [[A_RELOAD]], align 8 |
| ; CHECK: br label %if.end |
| ; |
| ; CHECK: if.end:{{[ ]+}}; preds = %if.else, %if.then |
| ; CHECK: ret i8* blockaddress(@"\01?test@@YAXXZ", %[[SPLIT_RECOVER_BB]]) |
| ; CHECK: } |
| |
| ; Function Attrs: nounwind |
| declare void @llvm.lifetime.start(i64, i8* nocapture) #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 |
| |
| ; Function Attrs: nounwind |
| declare void @llvm.lifetime.end(i64, i8* nocapture) #1 |
| |
| 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)"} |
| !2 = !{!3, !4, i64 0} |
| !3 = !{!"?AUSomeData@@", !4, i64 0, !4, i64 4} |
| !4 = !{!"int", !5, i64 0} |
| !5 = !{!"omnipotent char", !6, i64 0} |
| !6 = !{!"Simple C/C++ TBAA"} |
| !7 = !{!4, !4, i64 0} |
| !8 = !{!3, !4, i64 4} |