forked from OSchip/llvm-project
129 lines
4.0 KiB
C++
129 lines
4.0 KiB
C++
// RUN: %clang_cc1 -triple x86_64-windows -fasync-exceptions -fcxx-exceptions -fexceptions -fms-extensions -x c++ -Wno-implicit-function-declaration -S -emit-llvm %s -o - | FileCheck %s
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// CHECK: define dso_local i32 @"?bar@@YAHHVB1@@VB2@@@Z"
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// CHECK: %coerce.dive1 = getelementptr inbounds %class.B2
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// CHECK: %coerce.dive2 = getelementptr inbounds %class.B1
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// ----- scope begin of two passed-by-value temps
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// CHECK: invoke void @llvm.seh.scope.begin()
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// CHECK: invoke void @llvm.seh.scope.begin()
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// CHECK: invoke void @llvm.seh.scope.end()
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// CHECK: call void @"??1B1@@QEAA@XZ"
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// CHECK: invoke void @llvm.seh.scope.end()
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// CHECK: call void @"??1B2@@QEAA@XZ"
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// CHECK: define linkonce_odr dso_local void @"??1B2@@QEAA@XZ"
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// CHECK: %this.addr = alloca %class.B2*
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// ----- B1 scope begin without base ctor
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// CHECK: invoke void @llvm.seh.scope.begin()
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// CHECK: invoke void @llvm.seh.scope.end()
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// CHECK: call void @"??1B1@@QEAA@XZ"
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// CHECK: define dso_local void @"?goo@@YA?AVB1@@H@Z"
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// CHECK: call %class.B2* @"??0B2@@QEAA@XZ"(%class.B2*
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// CHECK: invoke void @llvm.seh.scope.begin()
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// check: call void @llvm.memcpy
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// CHECK: invoke void @llvm.seh.scope.end()
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// CHECK: call void @"??1B2@@QEAA@XZ"(%class.B2*
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// CHECK: define linkonce_odr dso_local %class.B2* @"??0B2@@QEAA@XZ"
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// CHECK: call %class.B1* @"??0B1@@QEAA@XZ"(%class.B1*
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// ----- scope begin of base ctor
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// CHECK: invoke void @llvm.seh.scope.begin()
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// CHECK: invoke void @llvm.seh.scope.end()
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// ----- B1 scope end without base dtor
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// ****************************************************************************
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// Abstract: Test CPP Conditional-Expr & ABI Temps under SEH -EHa option
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void printf(...);
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int xxxx = 0;
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int* ptr;
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int foo(int a)
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{
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return xxxx + a;
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}
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class B1 {
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public:
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int data = 90;
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B1() { foo(data + 111); }
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~B1() { printf("in B1 Dtor \n"); }
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};
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class B2 : public B1 {
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public:
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B2() { foo(data + 222); }
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~B2() { printf("in B2 Dtor \n");; }
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};
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class B3 : public B2 {
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public:
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B3() { foo(data + 333); }
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~B3() { printf("in B3 Dtor \n");; }
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};
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int bar(int j, class B1 b1Bar, class B2 b2Bar)
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{
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int ww;
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if ( j > 0)
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ww = b1Bar.data;
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else
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ww = b2Bar.data;
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return ww + *ptr;
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}
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class B1 goo(int w)
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{
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class B2 b2ingoo;
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b2ingoo.data += w;
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return b2ingoo;
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}
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// CHECK: define dso_local i32 @main()
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// CHECK: invoke void @llvm.seh.scope.begin()
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// --- beginning of conditional temp test
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// CHECK: invoke %class.B2* @"??0B2@@QEAA@XZ"
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// CHECK: invoke void @llvm.seh.scope.begin()
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// CHECK: invoke %class.B3* @"??0B3@@QEAA@XZ"
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// CHECK: invoke void @llvm.seh.scope.begin()
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// CHECK: invoke void @llvm.seh.scope.end()
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// CHECK: call void @"??1B3@@QEAA@XZ"
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// CHECK: invoke void @llvm.seh.scope.end()
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// CHECK: call void @"??1B2@@QEAA@XZ"
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// ----- end of conditional temp test
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// ----- testing caller's passed-by-value temps
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// setting scope in case exception occurs before the call
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// check: invoke %class.B2* @"??0B2@@QEAA@XZ"
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// CHECK: invoke void @llvm.seh.scope.begin()
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// CHECK: invoke %class.B1* @"??0B1@@QEAA@XZ"
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// CHECK: invoke void @llvm.seh.scope.begin()
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// ----- end of temps' scope right before callee
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// CHECK: invoke void @llvm.seh.scope.end()
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// CHECK: invoke void @llvm.seh.scope.end()
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// CHECK: invoke i32 @"?bar@@YAHHVB1@@VB2@@@Z"
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// ----- testing caller's return-by-value temp
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// scope begins right after callee which is the ctor of return temp
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// CHECK: void @"?goo@@YA?AVB1@@H@Z"
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// CHECK: invoke void @llvm.seh.scope.begin()
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// CHECK: invoke void @llvm.seh.scope.end()
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int main() {
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class B3 b3inmain;
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// Test conditional ctor and dtor
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int m = (xxxx > 1) ? B2().data + foo(99) :
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B3().data + foo(88);
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// Test: passed-in by value
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// Per Windows ABI, ctored by caller, dtored by callee
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int i = bar(foo(0), B1(), B2());
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// Test: returned by value
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// Per Windows ABI, caller allocate a temp in stack, then ctored by callee,
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// finally dtored in caller after consumed
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class B1 b1fromgoo = goo(i);
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return m + b1fromgoo.data + b3inmain.data;
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} |