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// RUN: %clang_cc1 -triple x86_64-apple-darwin10 -emit-llvm -o - %s | FileCheck %s
void *f();
template <typename T> T* g() {
if (T* t = f())
return t;
return 0;
}
void h() {
void *a = g<void>();
}
struct X {
X();
X(const X&);
~X();
operator bool();
};
struct Y {
Y();
~Y();
};
X getX();
// CHECK-LABEL: define void @_Z11if_destructi(
void if_destruct(int z) {
// Verify that the condition variable is destroyed at the end of the
// "if" statement.
// CHECK: call void @_ZN1XC1Ev
// CHECK: call zeroext i1 @_ZN1XcvbEv
if (X x = X()) {
// CHECK: store i32 18
z = 18;
}
// CHECK: call void @_ZN1XD1Ev
// CHECK: store i32 17
z = 17;
// CHECK: call void @_ZN1XC1Ev
if (X x = X())
Y y;
// CHECK: br
// CHECK: call void @_ZN1YC1Ev
// CHECK: call void @_ZN1YD1Ev
// CHECK: br
// CHECK: call void @_ZN1XD1Ev
// CHECK: call void @_Z4getXv
// CHECK: call zeroext i1 @_ZN1XcvbEv
// CHECK: call void @_ZN1XD1Ev
// CHECK: br
if (getX()) { }
// CHECK: ret
}
struct ConvertibleToInt {
ConvertibleToInt();
~ConvertibleToInt();
operator int();
};
ConvertibleToInt getConvToInt();
void switch_destruct(int z) {
// CHECK: call void @_ZN16ConvertibleToIntC1Ev
switch (ConvertibleToInt conv = ConvertibleToInt()) {
case 0:
break;
default:
// CHECK: store i32 19
z = 19;
break;
}
// CHECK: call void @_ZN16ConvertibleToIntD1Ev
// CHECK: store i32 20
z = 20;
// CHECK: call void @_Z12getConvToIntv
// CHECK: call i32 @_ZN16ConvertibleToIntcviEv
// CHECK: call void @_ZN16ConvertibleToIntD1Ev
switch(getConvToInt()) {
case 0:
break;
}
// CHECK: store i32 27
z = 27;
// CHECK: ret
}
int foo();
// CHECK-LABEL: define void @_Z14while_destructi
void while_destruct(int z) {
// CHECK: [[Z:%.*]] = alloca i32
// CHECK: [[CLEANUPDEST:%.*]] = alloca i32
while (X x = X()) {
// CHECK: call void @_ZN1XC1Ev
// CHECK-NEXT: [[COND:%.*]] = call zeroext i1 @_ZN1XcvbEv
// CHECK-NEXT: br i1 [[COND]]
// Loop-exit staging block.
// CHECK: store i32 3, i32* [[CLEANUPDEST]]
// CHECK-NEXT: br
// While body.
// CHECK: store i32 21, i32* [[Z]]
// CHECK: store i32 0, i32* [[CLEANUPDEST]]
// CHECK-NEXT: br
z = 21;
// Cleanup.
// CHECK: call void @_ZN1XD1Ev
// CHECK-NEXT: [[DEST:%.*]] = load i32, i32* [[CLEANUPDEST]]
// CHECK-NEXT: switch i32 [[DEST]]
}
// CHECK: store i32 22, i32* [[Z]]
z = 22;
// CHECK: call void @_Z4getXv
// CHECK-NEXT: call zeroext i1 @_ZN1XcvbEv
// CHECK-NEXT: call void @_ZN1XD1Ev
// CHECK-NEXT: br
while(getX()) { }
// CHECK: store i32 25, i32* [[Z]]
z = 25;
// CHECK: ret
}
// CHECK-LABEL: define void @_Z12for_destructi(
void for_destruct(int z) {
// CHECK: [[Z:%.*]] = alloca i32
// CHECK: [[CLEANUPDEST:%.*]] = alloca i32
// CHECK: [[I:%.*]] = alloca i32
// CHECK: call void @_ZN1YC1Ev
// CHECK-NEXT: br
// -> %for.cond
for(Y y = Y(); X x = X(); ++z) {
// %for.cond: The loop condition.
// CHECK: call void @_ZN1XC1Ev
// CHECK-NEXT: [[COND:%.*]] = call zeroext i1 @_ZN1XcvbEv(
// CHECK-NEXT: br i1 [[COND]]
// -> %for.body, %for.cond.cleanup
// %for.cond.cleanup: Exit cleanup staging.
// CHECK: store i32 2, i32* [[CLEANUPDEST]]
// CHECK-NEXT: br
// -> %cleanup
// %for.body:
// CHECK: store i32 23, i32* [[Z]]
// CHECK-NEXT: br
// -> %for.inc
z = 23;
// %for.inc:
// CHECK: [[TMP:%.*]] = load i32, i32* [[Z]]
// CHECK-NEXT: [[INC:%.*]] = add nsw i32 [[TMP]], 1
// CHECK-NEXT: store i32 [[INC]], i32* [[Z]]
// CHECK-NEXT: store i32 0, i32* [[CLEANUPDEST]]
// CHECK-NEXT: br
// -> %cleanup
// %cleanup: Destroys X.
// CHECK: call void @_ZN1XD1Ev
// CHECK-NEXT: [[YDESTTMP:%.*]] = load i32, i32* [[CLEANUPDEST]]
// CHECK-NEXT: switch i32 [[YDESTTMP]]
// 0 -> %cleanup.cont, default -> %cleanup1
// %cleanup.cont: (eliminable)
// CHECK: br
// -> %for.cond
// %cleanup1: Destroys Y.
// CHECK: call void @_ZN1YD1Ev(
// CHECK-NEXT: br
// -> %for.end
}
// %for.end:
// CHECK: store i32 24
z = 24;
// CHECK-NEXT: store i32 0, i32* [[I]]
// CHECK-NEXT: br
// -> %for.cond6
// %for.cond6:
// CHECK: call void @_Z4getXv
// CHECK-NEXT: call zeroext i1 @_ZN1XcvbEv
// CHECK-NEXT: call void @_ZN1XD1Ev
// CHECK-NEXT: br
// -> %for.body10, %for.end16
// %for.body10:
// CHECK: br
// -> %for.inc11
// %for.inc11:
// CHECK: call void @_Z4getXv
// CHECK-NEXT: load i32, i32* [[I]]
// CHECK-NEXT: add
// CHECK-NEXT: store
// CHECK-NEXT: call void @_ZN1XD1Ev
// CHECK-NEXT: br
// -> %for.cond6
int i = 0;
for(; getX(); getX(), ++i) { }
// %for.end16
// CHECK: store i32 26
z = 26;
// CHECK-NEXT: ret void
}
void do_destruct(int z) {
// CHECK-LABEL: define void @_Z11do_destruct
do {
// CHECK: store i32 77
z = 77;
// CHECK: call void @_Z4getXv
// CHECK: call zeroext i1 @_ZN1XcvbEv
// CHECK: call void @_ZN1XD1Ev
// CHECK: br
} while (getX());
// CHECK: store i32 99
z = 99;
// CHECK: ret
}
int f(X);
template<typename T>
int instantiated(T x) {
int result;
// CHECK: call void @_ZN1XC1ERKS_
// CHECK: call i32 @_Z1f1X
// CHECK: call void @_ZN1XD1Ev
// CHECK: br
// CHECK: store i32 2
// CHECK: br
// CHECK: store i32 3
if (f(x)) { result = 2; } else { result = 3; }
// CHECK: call void @_ZN1XC1ERKS_
// CHECK: call i32 @_Z1f1X
// CHECK: call void @_ZN1XD1Ev
// CHECK: br
// CHECK: store i32 4
// CHECK: br
while (f(x)) { result = 4; }
// CHECK: call void @_ZN1XC1ERKS_
// CHECK: call i32 @_Z1f1X
// CHECK: call void @_ZN1XD1Ev
// CHECK: br
// CHECK: store i32 6
// CHECK: br
// CHECK: call void @_ZN1XC1ERKS_
// CHECK: call i32 @_Z1f1X
// CHECK: store i32 5
// CHECK: call void @_ZN1XD1Ev
// CHECK: br
for (; f(x); f(x), result = 5) {
result = 6;
}
// CHECK: call void @_ZN1XC1ERKS_
// CHECK: call i32 @_Z1f1X
// CHECK: call void @_ZN1XD1Ev
// CHECK: switch i32
// CHECK: store i32 7
// CHECK: store i32 8
switch (f(x)) {
case 0:
result = 7;
break;
case 1:
result = 8;
}
// CHECK: store i32 9
// CHECK: br
// CHECK: call void @_ZN1XC1ERKS_
// CHECK: call i32 @_Z1f1X
// CHECK: call void @_ZN1XD1Ev
// CHECK: br
do {
result = 9;
} while (f(x));
// CHECK: store i32 10
// CHECK: call void @_ZN1XC1ERKS_
// CHECK: call zeroext i1 @_ZN1XcvbEv
// CHECK: call void @_ZN1XD1Ev
// CHECK: br
do {
result = 10;
} while (X(x));
// CHECK: ret i32
return result;
}
template int instantiated(X);
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