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32718ad8f8
Ultimately, we'll need to leave something behind to indicate which alloca will hold the exception, but we can figure that out when it comes time to emit the __CxxFrameHandler3 catch handler table. llvm-svn: 231164
255 lines
11 KiB
LLVM
255 lines
11 KiB
LLVM
; RUN: opt -mtriple=x86_64-pc-windows-msvc -winehprepare -S -o - < %s | FileCheck %s
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; This test is based on the following code:
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;
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; struct SomeData {
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; int a;
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; int b;
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; };
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;
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; void may_throw();
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; void does_not_throw(int i);
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; void dump(int *, int, SomeData&);
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;
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; void test() {
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; int NumExceptions = 0;
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; int ExceptionVal[10];
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; SomeData Data = { 0, 0 };
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;
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; for (int i = 0; i < 10; ++i) {
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; try {
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; may_throw();
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; Data.a += i;
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; }
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; catch (int e) {
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; ExceptionVal[NumExceptions] = e;
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; ++NumExceptions;
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; if (e == i)
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; Data.b += e;
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; else
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; Data.a += e;
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; }
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; does_not_throw(NumExceptions);
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; }
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; dump(ExceptionVal, NumExceptions, Data);
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; }
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; ModuleID = 'cppeh-frame-vars.cpp'
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target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-pc-windows-msvc"
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%rtti.TypeDescriptor2 = type { i8**, i8*, [3 x i8] }
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%struct.SomeData = type { i32, i32 }
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; This structure should be declared for the frame allocation block.
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; CHECK: %"struct.\01?test@@YAXXZ.ehdata" = type { i32, i8*, i32, i32, [10 x i32], i32, %struct.SomeData }
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$"\01??_R0H@8" = comdat any
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@"\01??_7type_info@@6B@" = external constant i8*
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@"\01??_R0H@8" = linkonce_odr global %rtti.TypeDescriptor2 { i8** @"\01??_7type_info@@6B@", i8* null, [3 x i8] c".H\00" }, comdat
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; The function entry should be rewritten like this.
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; CHECK: define void @"\01?test@@YAXXZ"() #0 {
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; CHECK: entry:
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; CHECK: %frame.alloc = call i8* @llvm.frameallocate(i32 80)
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; CHECK: %eh.data = bitcast i8* %frame.alloc to %"struct.\01?test@@YAXXZ.ehdata"*
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; CHECK-NOT: %NumExceptions = alloca i32, align 4
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; CHECK: %NumExceptions = getelementptr inbounds %"struct.\01?test@@YAXXZ.ehdata", %"struct.\01?test@@YAXXZ.ehdata"* %eh.data, i32 0, i32 3
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; CHECK-NOT: %ExceptionVal = alloca [10 x i32], align 16
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; CHECK: %ExceptionVal = getelementptr inbounds %"struct.\01?test@@YAXXZ.ehdata", %"struct.\01?test@@YAXXZ.ehdata"* %eh.data, i32 0, i32 4
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; CHECK-NOT: %Data = alloca %struct.SomeData, align 4
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; CHECK: %Data = getelementptr inbounds %"struct.\01?test@@YAXXZ.ehdata", %"struct.\01?test@@YAXXZ.ehdata"* %eh.data, i32 0, i32 6
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; CHECK: %i = getelementptr inbounds %"struct.\01?test@@YAXXZ.ehdata", %"struct.\01?test@@YAXXZ.ehdata"* %eh.data, i32 0, i32 5
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; CHECK: %exn.slot = alloca i8*
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; CHECK: %ehselector.slot = alloca i32
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; CHECK-NOT: %e = alloca i32, align 4
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; CHECK: %e = getelementptr inbounds %"struct.\01?test@@YAXXZ.ehdata", %"struct.\01?test@@YAXXZ.ehdata"* %eh.data, i32 0, i32 2
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; Function Attrs: uwtable
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define void @"\01?test@@YAXXZ"() #0 {
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entry:
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%NumExceptions = alloca i32, align 4
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%ExceptionVal = alloca [10 x i32], align 16
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%Data = alloca %struct.SomeData, align 4
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%i = alloca i32, align 4
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%exn.slot = alloca i8*
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%ehselector.slot = alloca i32
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%e = alloca i32, align 4
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store i32 0, i32* %NumExceptions, align 4
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%tmp = bitcast %struct.SomeData* %Data to i8*
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call void @llvm.memset(i8* %tmp, i8 0, i64 8, i32 4, i1 false)
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store i32 0, i32* %i, align 4
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br label %for.cond
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for.cond: ; preds = %for.inc, %entry
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%tmp1 = load i32, i32* %i, align 4
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%cmp = icmp slt i32 %tmp1, 10
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br i1 %cmp, label %for.body, label %for.end
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for.body: ; preds = %for.cond
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invoke void @"\01?may_throw@@YAXXZ"()
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to label %invoke.cont unwind label %lpad
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invoke.cont: ; preds = %for.body
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%tmp2 = load i32, i32* %i, align 4
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%a = getelementptr inbounds %struct.SomeData, %struct.SomeData* %Data, i32 0, i32 0
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%tmp3 = load i32, i32* %a, align 4
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%add = add nsw i32 %tmp3, %tmp2
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store i32 %add, i32* %a, align 4
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br label %try.cont
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lpad: ; preds = %for.body
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%tmp4 = landingpad { i8*, i32 } personality i8* bitcast (i32 (...)* @__CxxFrameHandler3 to i8*)
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catch i8* bitcast (%rtti.TypeDescriptor2* @"\01??_R0H@8" to i8*)
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%tmp5 = extractvalue { i8*, i32 } %tmp4, 0
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store i8* %tmp5, i8** %exn.slot
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%tmp6 = extractvalue { i8*, i32 } %tmp4, 1
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store i32 %tmp6, i32* %ehselector.slot
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br label %catch.dispatch
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catch.dispatch: ; preds = %lpad
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%sel = load i32, i32* %ehselector.slot
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%tmp7 = call i32 @llvm.eh.typeid.for(i8* bitcast (%rtti.TypeDescriptor2* @"\01??_R0H@8" to i8*)) #1
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%matches = icmp eq i32 %sel, %tmp7
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br i1 %matches, label %catch, label %eh.resume
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catch: ; preds = %catch.dispatch
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%exn = load i8*, i8** %exn.slot
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%e.i8 = bitcast i32* %e to i8*
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call void @llvm.eh.begincatch(i8* %exn, i8* %e.i8) #1
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%tmp11 = load i32, i32* %e, align 4
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%tmp12 = load i32, i32* %NumExceptions, align 4
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%idxprom = sext i32 %tmp12 to i64
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%arrayidx = getelementptr inbounds [10 x i32], [10 x i32]* %ExceptionVal, i32 0, i64 %idxprom
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store i32 %tmp11, i32* %arrayidx, align 4
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%tmp13 = load i32, i32* %NumExceptions, align 4
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%inc = add nsw i32 %tmp13, 1
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store i32 %inc, i32* %NumExceptions, align 4
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%tmp14 = load i32, i32* %e, align 4
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%tmp15 = load i32, i32* %i, align 4
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%cmp1 = icmp eq i32 %tmp14, %tmp15
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br i1 %cmp1, label %if.then, label %if.else
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if.then: ; preds = %catch
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%tmp16 = load i32, i32* %e, align 4
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%b = getelementptr inbounds %struct.SomeData, %struct.SomeData* %Data, i32 0, i32 1
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%tmp17 = load i32, i32* %b, align 4
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%add2 = add nsw i32 %tmp17, %tmp16
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store i32 %add2, i32* %b, align 4
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br label %if.end
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if.else: ; preds = %catch
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%tmp18 = load i32, i32* %e, align 4
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%a3 = getelementptr inbounds %struct.SomeData, %struct.SomeData* %Data, i32 0, i32 0
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%tmp19 = load i32, i32* %a3, align 4
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%add4 = add nsw i32 %tmp19, %tmp18
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store i32 %add4, i32* %a3, align 4
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br label %if.end
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if.end: ; preds = %if.else, %if.then
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call void @llvm.eh.endcatch() #1
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br label %try.cont
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try.cont: ; preds = %if.end, %invoke.cont
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%tmp20 = load i32, i32* %NumExceptions, align 4
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call void @"\01?does_not_throw@@YAXH@Z"(i32 %tmp20)
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br label %for.inc
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for.inc: ; preds = %try.cont
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%tmp21 = load i32, i32* %i, align 4
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%inc5 = add nsw i32 %tmp21, 1
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store i32 %inc5, i32* %i, align 4
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br label %for.cond
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for.end: ; preds = %for.cond
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%tmp22 = load i32, i32* %NumExceptions, align 4
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%arraydecay = getelementptr inbounds [10 x i32], [10 x i32]* %ExceptionVal, i32 0, i32 0
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call void @"\01?dump@@YAXPEAHHAEAUSomeData@@@Z"(i32* %arraydecay, i32 %tmp22, %struct.SomeData* dereferenceable(8) %Data)
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ret void
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eh.resume: ; preds = %catch.dispatch
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%exn6 = load i8*, i8** %exn.slot
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%sel7 = load i32, i32* %ehselector.slot
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%lpad.val = insertvalue { i8*, i32 } undef, i8* %exn6, 0
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%lpad.val8 = insertvalue { i8*, i32 } %lpad.val, i32 %sel7, 1
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resume { i8*, i32 } %lpad.val8
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}
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; The following catch handler should be outlined.
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; CHECK-LABEL: define internal i8* @"\01?test@@YAXXZ.catch"(i8*, i8*) {
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; CHECK: entry:
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; CHECK: %eh.alloc = call i8* @llvm.framerecover(i8* bitcast (void ()* @"\01?test@@YAXXZ" to i8*), i8* %1)
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; CHECK: %eh.data = bitcast i8* %eh.alloc to %"struct.\01?test@@YAXXZ.ehdata"*
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; CHECK: %e = getelementptr inbounds %"struct.\01?test@@YAXXZ.ehdata", %"struct.\01?test@@YAXXZ.ehdata"* %eh.data, i32 0, i32 2
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; CHECK: %NumExceptions = getelementptr inbounds %"struct.\01?test@@YAXXZ.ehdata", %"struct.\01?test@@YAXXZ.ehdata"* %eh.data, i32 0, i32 3
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; CHECK: %ExceptionVal = getelementptr inbounds %"struct.\01?test@@YAXXZ.ehdata", %"struct.\01?test@@YAXXZ.ehdata"* %eh.data, i32 0, i32 4
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; CHECK: %i = getelementptr inbounds %"struct.\01?test@@YAXXZ.ehdata", %"struct.\01?test@@YAXXZ.ehdata"* %eh.data, i32 0, i32 5
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; CHECK: %Data = getelementptr inbounds %"struct.\01?test@@YAXXZ.ehdata", %"struct.\01?test@@YAXXZ.ehdata"* %eh.data, i32 0, i32 6
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; CHECK: %tmp11 = load i32, i32* %e, align 4
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; CHECK: %tmp12 = load i32, i32* %NumExceptions, align 4
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; CHECK: %idxprom = sext i32 %tmp12 to i64
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; CHECK: %arrayidx = getelementptr inbounds [10 x i32], [10 x i32]* %ExceptionVal, i32 0, i64 %idxprom
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; CHECK: store i32 %tmp11, i32* %arrayidx, align 4
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; CHECK: %tmp13 = load i32, i32* %NumExceptions, align 4
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; CHECK: %inc = add nsw i32 %tmp13, 1
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; CHECK: store i32 %inc, i32* %NumExceptions, align 4
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; CHECK: %tmp14 = load i32, i32* %e, align 4
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; CHECK: %tmp15 = load i32, i32* %i, align 4
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; CHECK: %cmp1 = icmp eq i32 %tmp14, %tmp15
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; CHECK: br i1 %cmp1, label %if.then, label %if.else
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;
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; CHECK: if.then: ; preds = %entry
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; CHECK: %tmp16 = load i32, i32* %e, align 4
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; CHECK: %b = getelementptr inbounds %struct.SomeData, %struct.SomeData* %Data, i32 0, i32 1
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; CHECK: %tmp17 = load i32, i32* %b, align 4
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; CHECK: %add2 = add nsw i32 %tmp17, %tmp16
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; CHECK: store i32 %add2, i32* %b, align 4
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; CHECK: br label %if.end
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;
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; CHECK: if.else: ; preds = %entry
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; CHECK: %tmp18 = load i32, i32* %e, align 4
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; CHECK: %a3 = getelementptr inbounds %struct.SomeData, %struct.SomeData* %Data, i32 0, i32 0
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; CHECK: %tmp19 = load i32, i32* %a3, align 4
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; CHECK: %add4 = add nsw i32 %tmp19, %tmp18
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; CHECK: store i32 %add4, i32* %a3, align 4
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; CHECK: br label %if.end
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;
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; CHECK: if.end: ; preds = %if.else, %if.then
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; CHECK: ret i8* blockaddress(@"\01?test@@YAXXZ", %try.cont)
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; CHECK: }
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; Function Attrs: nounwind
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declare void @llvm.memset(i8* nocapture, i8, i64, i32, i1) #1
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declare void @"\01?may_throw@@YAXXZ"() #2
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declare i32 @__CxxFrameHandler3(...)
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; Function Attrs: nounwind readnone
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declare i32 @llvm.eh.typeid.for(i8*) #3
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declare void @llvm.eh.begincatch(i8*, i8*)
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declare void @llvm.eh.endcatch()
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declare void @"\01?does_not_throw@@YAXH@Z"(i32) #2
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declare void @"\01?dump@@YAXPEAHHAEAUSomeData@@@Z"(i32*, i32, %struct.SomeData* dereferenceable(8)) #2
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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" }
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attributes #1 = { nounwind }
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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" }
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attributes #3 = { nounwind readnone }
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!llvm.module.flags = !{!0}
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!llvm.ident = !{!1}
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!0 = !{i32 1, !"PIC Level", i32 2}
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!1 = !{!"clang version 3.7.0 (trunk 228868)"}
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