lifetime-sanitizer.cpp
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// RUN: %clang -w -target x86_64-linux-gnu -S -emit-llvm -o - -fno-exceptions -O0 %s | \
// RUN: FileCheck %s -check-prefixes=CHECK,CHECK-O0 --implicit-check-not=llvm.lifetime
// RUN: %clang -w -target x86_64-linux-gnu -S -emit-llvm -o - -fno-exceptions -O0 \
// RUN: -fsanitize=address -fsanitize-address-use-after-scope %s | \
// RUN: FileCheck %s -check-prefixes=CHECK,LIFETIME
// RUN: %clang -w -target x86_64-linux-gnu -S -emit-llvm -o - -fno-exceptions -O0 \
// RUN: -fsanitize=memory %s | \
// RUN: FileCheck %s -check-prefixes=CHECK,LIFETIME
// RUN: %clang -w -target aarch64-linux-gnu -S -emit-llvm -o - -fno-exceptions -O0 \
// RUN: -fsanitize=hwaddress %s | \
// RUN: FileCheck %s -check-prefixes=CHECK,LIFETIME
extern int bar(char *A, int n);
struct X {
X();
~X();
int *p;
};
struct Y {
Y();
int *p;
};
extern "C" void a(), b(), c(), d();
// CHECK: define dso_local void @_Z3fooi(i32 %[[N:[^)]+]])
void foo(int n) {
// CHECK: store i32 %[[N]], i32* %[[NADDR:[^,]+]]
// CHECK-LABEL: call void @a()
a();
// CHECK-LABEL: call void @b()
// CHECK: [[NARG:%[^ ]+]] = load i32, i32* %[[NADDR]]
// CHECK: [[BOOL:%[^ ]+]] = icmp ne i32 [[NARG]], 0
// CHECK: store i1 false
// CHECK: br i1 [[BOOL]], label %[[ONTRUE:[^,]+]], label %[[ONFALSE:[^,]+]]
//
// CHECK: [[ONTRUE]]:
// LIFETIME: @llvm.lifetime.start
// LIFETIME: store i1 true
// LIFETIME: call void @_ZN1XC
// CHECK: br label %[[END:[^,]+]]
//
// CHECK: [[ONFALSE]]:
// LIFETIME: @llvm.lifetime.start
// LIFETIME: store i1 true
// LIFETIME: call void @_ZN1YC
// CHECK: br label %[[END]]
//
// CHECK: [[END]]:
// CHECK: call void @c()
// LIFETIME: @llvm.lifetime.end
// LIFETIME: @llvm.lifetime.end
b(), (n ? X().p : Y().p), c();
// CHECK: call void @d()
d();
}