File: inlined-static-variable.cpp

package info (click to toggle)
swiftlang 6.0.3-2
  • links: PTS, VCS
  • area: main
  • in suites: forky, sid, trixie
  • size: 2,519,992 kB
  • sloc: cpp: 9,107,863; ansic: 2,040,022; asm: 1,135,751; python: 296,500; objc: 82,456; f90: 60,502; lisp: 34,951; pascal: 19,946; sh: 18,133; perl: 7,482; ml: 4,937; javascript: 4,117; makefile: 3,840; awk: 3,535; xml: 914; fortran: 619; cs: 573; ruby: 573
file content (70 lines) | stat: -rw-r--r-- 2,137 bytes parent folder | download | duplicates (11)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
// RUN: dsymutil -f -y %p/dummy-debug-map.map -oso-prepend-path \
// RUN:   %p/../Inputs/inlined-static-variable -o - -keep-function-for-static \
// RUN:   | llvm-dwarfdump - | FileCheck %s --implicit-check-not \
// RUN:   "{{DW_AT_low_pc|DW_AT_high_pc|DW_AT_location|DW_TAG|NULL}}" \
// RUN:   --check-prefixes=CHECK
//
// RUN: dsymutil --linker parallel --no-odr -f -y %p/dummy-debug-map.map \
// RUN:   -oso-prepend-path %p/../Inputs/inlined-static-variable -o - \
// RUN:   -keep-function-for-static | llvm-dwarfdump - | FileCheck %s \
// RUN:   --implicit-check-not \
// RUN:   "{{DW_AT_low_pc|DW_AT_high_pc|DW_AT_location|DW_TAG|NULL}}" \
// RUN:   --check-prefixes=CHECK

// clang -g -c inlined-static-variable.cpp -o 4.o

// The functions removed and not_removed are not in the debug map and are
// considered dead, but they are also inlined into the function foo which is
// in the debug map. Those function-local globals are alive and thus should
// have locations in the debug info even if their functions do not.

inline __attribute__((always_inline)) int removed() {
  static int a = 0;
  return ++a;
}

__attribute__((always_inline)) int not_removed() {
  static int b = 0;
  return ++b;
}

int unused() {
  static int c = 0;
  return ++c;
}

int foo() {
  return removed() + not_removed();
}

// CHECK: DW_TAG_compile_unit
// CHECK:   DW_AT_low_pc
// CHECK:   DW_AT_high_pc

// CHECK:   DW_TAG_subprogram
// CHECK:     DW_AT_name	("removed")
// CHECK:     DW_TAG_variable
// CHECK:       DW_AT_name	("a")
// CHECK:       DW_AT_location
// CHECK:     NULL

// CHECK:   DW_TAG_base_type
// CHECK:   DW_TAG_subprogram
// CHECK:     DW_AT_name	("not_removed")
// CHECK:     DW_TAG_variable
// CHECK:       DW_AT_name	("b")
// CHECK:       DW_AT_location
// CHECK:     NULL

// CHECK:   DW_TAG_subprogram
// CHECK:     DW_AT_low_pc
// CHECK:     DW_AT_high_pc
// CHECK:     DW_AT_name	("foo")
// CHECK:     DW_TAG_inlined_subroutine
// CHECK:       DW_AT_low_pc
// CHECK:       DW_AT_high_pc
// CHECK:     DW_TAG_inlined_subroutine
// CHECK:       DW_AT_low_pc
// CHECK:       DW_AT_high_pc
// CHECK:     NULL
// CHECK:   NULL