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Diffstat (limited to 'test/CodeGen/X86/cppeh-frame-vars.ll')
| -rw-r--r-- | test/CodeGen/X86/cppeh-frame-vars.ll | 261 |
1 files changed, 261 insertions, 0 deletions
diff --git a/test/CodeGen/X86/cppeh-frame-vars.ll b/test/CodeGen/X86/cppeh-frame-vars.ll new file mode 100644 index 0000000..667f133 --- /dev/null +++ b/test/CodeGen/X86/cppeh-frame-vars.ll @@ -0,0 +1,261 @@ +; 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 } + +; This structure should be declared for the frame allocation block. +; CHECK: %"struct.\01?test@@YAXXZ.ehdata" = type { i32, i8*, i32, i32, [10 x i32], i32, %struct.SomeData } + +$"\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: %frame.alloc = call i8* @llvm.frameallocate(i32 80) +; CHECK: %eh.data = bitcast i8* %frame.alloc to %"struct.\01?test@@YAXXZ.ehdata"* +; CHECK-NOT: %NumExceptions = alloca i32, align 4 +; CHECK: %NumExceptions = getelementptr inbounds %"struct.\01?test@@YAXXZ.ehdata"* %eh.data, i32 0, i32 3 +; CHECK-NOT: %ExceptionVal = alloca [10 x i32], align 16 +; CHECK: %ExceptionVal = getelementptr inbounds %"struct.\01?test@@YAXXZ.ehdata"* %eh.data, i32 0, i32 4 +; CHECK-NOT: %Data = alloca %struct.SomeData, align 4 +; CHECK: %Data = getelementptr inbounds %"struct.\01?test@@YAXXZ.ehdata"* %eh.data, i32 0, i32 6 +; CHECK: %i = getelementptr inbounds %"struct.\01?test@@YAXXZ.ehdata"* %eh.data, i32 0, i32 5 +; CHECK: %exn.slot = alloca i8* +; CHECK: %ehselector.slot = alloca i32 +; CHECK-NOT: %e = alloca i32, align 4 +; CHECK: %e = getelementptr inbounds %"struct.\01?test@@YAXXZ.ehdata"* %eh.data, i32 0, i32 2 + +; 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 + %0 = bitcast %struct.SomeData* %Data to i8* + call void @llvm.memset(i8* %0, 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 + %1 = load i32* %i, align 4 + %cmp = icmp slt i32 %1, 10 + br i1 %cmp, label %for.body, label %for.end + +for.body: ; preds = %for.cond + invoke void @"\01?may_throw@@YAXXZ"() + to label %invoke.cont unwind label %lpad + +invoke.cont: ; preds = %for.body + %2 = load i32* %i, align 4 + %a = getelementptr inbounds %struct.SomeData* %Data, i32 0, i32 0 + %3 = load i32* %a, align 4 + %add = add nsw i32 %3, %2 + store i32 %add, i32* %a, align 4 + br label %try.cont + +lpad: ; preds = %for.body + %4 = landingpad { i8*, i32 } personality i8* bitcast (i32 (...)* @__CxxFrameHandler3 to i8*) + catch i8* bitcast (%rtti.TypeDescriptor2* @"\01??_R0H@8" to i8*) + %5 = extractvalue { i8*, i32 } %4, 0 + store i8* %5, i8** %exn.slot + %6 = extractvalue { i8*, i32 } %4, 1 + store i32 %6, i32* %ehselector.slot + br label %catch.dispatch + +catch.dispatch: ; preds = %lpad + %sel = load i32* %ehselector.slot + %7 = call i32 @llvm.eh.typeid.for(i8* bitcast (%rtti.TypeDescriptor2* @"\01??_R0H@8" to i8*)) #1 + %matches = icmp eq i32 %sel, %7 + br i1 %matches, label %catch, label %eh.resume + +catch: ; preds = %catch.dispatch + %exn = load i8** %exn.slot + %8 = call i8* @llvm.eh.begincatch(i8* %exn) #1 + %9 = bitcast i8* %8 to i32* + %10 = load i32* %9, align 4 + store i32 %10, i32* %e, align 4 + %11 = load i32* %e, align 4 + %12 = load i32* %NumExceptions, align 4 + %idxprom = sext i32 %12 to i64 + %arrayidx = getelementptr inbounds [10 x i32]* %ExceptionVal, i32 0, i64 %idxprom + store i32 %11, i32* %arrayidx, align 4 + %13 = load i32* %NumExceptions, align 4 + %inc = add nsw i32 %13, 1 + store i32 %inc, i32* %NumExceptions, align 4 + %14 = load i32* %e, align 4 + %15 = load i32* %i, align 4 + %cmp1 = icmp eq i32 %14, %15 + br i1 %cmp1, label %if.then, label %if.else + +if.then: ; preds = %catch + %16 = load i32* %e, align 4 + %b = getelementptr inbounds %struct.SomeData* %Data, i32 0, i32 1 + %17 = load i32* %b, align 4 + %add2 = add nsw i32 %17, %16 + store i32 %add2, i32* %b, align 4 + br label %if.end + +if.else: ; preds = %catch + %18 = load i32* %e, align 4 + %a3 = getelementptr inbounds %struct.SomeData* %Data, i32 0, i32 0 + %19 = load i32* %a3, align 4 + %add4 = add nsw i32 %19, %18 + store i32 %add4, i32* %a3, align 4 + br label %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 + %20 = load i32* %NumExceptions, align 4 + call void @"\01?does_not_throw@@YAXH@Z"(i32 %20) + br label %for.inc + +for.inc: ; preds = %try.cont + %21 = load i32* %i, align 4 + %inc5 = add nsw i32 %21, 1 + store i32 %inc5, i32* %i, align 4 + br label %for.cond + +for.end: ; preds = %for.cond + %22 = load i32* %NumExceptions, align 4 + %arraydecay = getelementptr inbounds [10 x i32]* %ExceptionVal, i32 0, i32 0 + call void @"\01?dump@@YAXPEAHHAEAUSomeData@@@Z"(i32* %arraydecay, i32 %22, %struct.SomeData* dereferenceable(8) %Data) + ret void + +eh.resume: ; preds = %catch.dispatch + %exn6 = load i8** %exn.slot + %sel7 = load 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 +} + +; The following catch handler should be outlined. +; CHECK: define i8* @"\01?test@@YAXXZ.catch"(i8*, i8*) { +; CHECK: catch.entry: +; CHECK: %eh.alloc = call i8* @llvm.framerecover(i8* bitcast (void ()* @"\01?test@@YAXXZ" to i8*), i8* %1) +; CHECK: %eh.data = bitcast i8* %eh.alloc to %"struct.\01?test@@YAXXZ.ehdata"* +; CHECK: %eh.obj.ptr = getelementptr inbounds %"struct.\01?test@@YAXXZ.ehdata"* %eh.data, i32 0, i32 1 +; CHECK: %eh.obj = load i8** %eh.obj.ptr +; CHECK: %e = getelementptr inbounds %"struct.\01?test@@YAXXZ.ehdata"* %eh.data, i32 0, i32 2 +; CHECK: %NumExceptions = getelementptr inbounds %"struct.\01?test@@YAXXZ.ehdata"* %eh.data, i32 0, i32 3 +; CHECK: %ExceptionVal = getelementptr inbounds %"struct.\01?test@@YAXXZ.ehdata"* %eh.data, i32 0, i32 4 +; CHECK: %i = getelementptr inbounds %"struct.\01?test@@YAXXZ.ehdata"* %eh.data, i32 0, i32 5 +; CHECK: %Data = getelementptr inbounds %"struct.\01?test@@YAXXZ.ehdata"* %eh.data, i32 0, i32 6 +; CHECK: %2 = bitcast i8* %eh.obj to i32* +; CHECK: %3 = load i32* %2, align 4 +; CHECK: store i32 %3, i32* %e, align 4 +; CHECK: %4 = load i32* %e, align 4 +; CHECK: %5 = load i32* %NumExceptions, align 4 +; CHECK: %idxprom = sext i32 %5 to i64 +; CHECK: %arrayidx = getelementptr inbounds [10 x i32]* %ExceptionVal, i32 0, i64 %idxprom +; CHECK: store i32 %4, i32* %arrayidx, align 4 +; CHECK: %6 = load i32* %NumExceptions, align 4 +; CHECK: %inc = add nsw i32 %6, 1 +; CHECK: store i32 %inc, i32* %NumExceptions, align 4 +; CHECK: %7 = load i32* %e, align 4 +; CHECK: %8 = load i32* %i, align 4 +; CHECK: %cmp1 = icmp eq i32 %7, %8 +; CHECK: br i1 %cmp1, label %if.then, label %if.else +; +; CHECK: if.then: ; preds = %catch.entry +; CHECK: %9 = load i32* %e, align 4 +; CHECK: %b = getelementptr inbounds %struct.SomeData* %Data, i32 0, i32 1 +; CHECK: %10 = load i32* %b, align 4 +; CHECK: %add2 = add nsw i32 %10, %9 +; CHECK: store i32 %add2, i32* %b, align 4 +; CHECK: br label %if.end +; +; CHECK: if.else: ; preds = %catch.entry +; CHECK: %11 = load i32* %e, align 4 +; CHECK: %a3 = getelementptr inbounds %struct.SomeData* %Data, i32 0, i32 0 +; CHECK: %12 = load i32* %a3, align 4 +; CHECK: %add4 = add nsw i32 %12, %11 +; CHECK: store i32 %add4, 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 i8* @llvm.eh.begincatch(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)"} |