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|
; 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)"}
|
