File: cleanup-destslot-simple.c

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llvm-toolchain-3.9 1%3A3.9.1-8
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// RUN: %clang_cc1 -O1 -triple x86_64-none-linux-gnu -emit-llvm -debug-info-kind=line-tables-only %s -o - | FileCheck %s --check-prefix=CHECK --check-prefix=LIFETIME

// We shouldn't have markers at -O0 or with msan.
// RUN: %clang_cc1 -O0 -triple x86_64-none-linux-gnu -emit-llvm -debug-info-kind=line-tables-only %s -o - | FileCheck %s
// RUN: %clang_cc1 -O1 -triple x86_64-none-linux-gnu -emit-llvm -debug-info-kind=line-tables-only %s -o - -fsanitize=memory | FileCheck %s

// There is no exception to handle here, lifetime.end is not a destructor,
// so there is no need have cleanup dest slot related code
// CHECK-LABEL: define i32 @test
int test() {
  int x = 3;
  int *volatile p = &x;
  return *p;
// CHECK: [[X:%.*]] = alloca i32
// CHECK: [[P:%.*]] = alloca i32*
// LIFETIME: call void @llvm.lifetime.start(i64 4, i8* %{{.*}}){{( #[0-9]+)?}}, !dbg
// LIFETIME: call void @llvm.lifetime.start(i64 8, i8* %{{.*}}){{( #[0-9]+)?}}, !dbg
// CHECK-NOT: store i32 %{{.*}}, i32* %cleanup.dest.slot
// LIFETIME: call void @llvm.lifetime.end(i64 8, {{.*}}){{( #[0-9]+)?}}, !dbg
// LIFETIME: call void @llvm.lifetime.end(i64 4, {{.*}}){{( #[0-9]+)?}}, !dbg
}