File: cleanup-destslot-simple.c

package info (click to toggle)
flang 20181226-2
  • links: PTS, VCS
  • area: main
  • in suites: buster
  • size: 181,072 kB
  • sloc: cpp: 1,182,685; ansic: 598,652; objc: 103,775; f90: 57,054; python: 15,041; fortran: 13,601; lisp: 10,416; perl: 2,460; asm: 2,148; sh: 1,544; awk: 995; cs: 565; xml: 403; lex: 295; makefile: 225; pascal: 130
file content (21 lines) | stat: -rw-r--r-- 1,196 bytes parent folder | download | duplicates (5)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
// 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.p0i8(i64 4, i8* nonnull %{{.*}}){{( #[0-9]+)?}}, !dbg
// LIFETIME: call void @llvm.lifetime.start.p0i8(i64 8, i8* nonnull %{{.*}}){{( #[0-9]+)?}}, !dbg
// CHECK-NOT: store i32 %{{.*}}, i32* %cleanup.dest.slot
// LIFETIME: call void @llvm.lifetime.end.p0i8(i64 8, {{.*}}){{( #[0-9]+)?}}, !dbg
// LIFETIME: call void @llvm.lifetime.end.p0i8(i64 4, {{.*}}){{( #[0-9]+)?}}, !dbg
}