1// REQUIRES: lld-available
2
3// FIXME: Investigate and fix.
4// XFAIL: powerpc64-target-arch
5
6// RUN: %clang_profgen -fcoverage-mapping -c %s -o %t0.o
7// RUN: %clang_profgen -fcoverage-mapping -c %s -DOBJ_1 -o %t1.o
8// RUN: %clang_profgen -fcoverage-mapping -c %s -DOBJ_2 -o %t2.o
9
10/// An external symbol can override a weak external symbol.
11// RUN: %clang_profgen -fcoverage-mapping -fuse-ld=lld %t0.o %t1.o -o %t1
12// RUN: env LLVM_PROFILE_FILE=%t.profraw %run %t1 | FileCheck %s --check-prefix=CHECK1
13// RUN: llvm-profdata show %t.profraw --all-functions | FileCheck %s --check-prefix=PROFILE1_NOGC
14// RUN: %clang_profgen -fcoverage-mapping -fuse-ld=lld -Wl,--gc-sections %t0.o %t1.o -o %t1
15// RUN: env LLVM_PROFILE_FILE=%t.profraw %run %t1 | FileCheck %s --check-prefix=CHECK1
16// RUN: llvm-profdata show %t.profraw --all-functions | FileCheck %s --check-prefix=PROFILE1_NOGC
17
18// RUN: %clang_profgen -fcoverage-mapping -fuse-ld=lld %t0.o %t2.o -o %t2
19// RUN: env LLVM_PROFILE_FILE=%t.profraw %run %t2 | FileCheck %s --check-prefix=CHECK2
20// RUN: llvm-profdata show %t.profraw --all-functions | FileCheck %s --check-prefix=PROFILE2_NOGC
21// RUN: %clang_profgen -fcoverage-mapping -fuse-ld=lld -Wl,--gc-sections %t0.o %t2.o -o %t2
22// RUN: env LLVM_PROFILE_FILE=%t.profraw %run %t2 | FileCheck %s --check-prefix=CHECK2
23// RUN: llvm-profdata show %t.profraw --all-functions | FileCheck %s --check-prefix=PROFILE2_GC
24
25/// Repeat the above tests with -ffunction-sections.
26// RUN: %clang_profgen -fcoverage-mapping -ffunction-sections -c %s -o %t0.o
27// RUN: %clang_profgen -fcoverage-mapping -ffunction-sections -c %s -DOBJ_1 -o %t1.o
28// RUN: %clang_profgen -fcoverage-mapping -ffunction-sections -c %s -DOBJ_2 -o %t2.o
29
30// RUN: %clang_profgen -fcoverage-mapping -fuse-ld=lld %t0.o %t1.o -o %t1
31// RUN: env LLVM_PROFILE_FILE=%t.profraw %run %t1 | FileCheck %s --check-prefix=CHECK1
32// RUN: llvm-profdata show %t.profraw --all-functions | FileCheck %s --check-prefix=PROFILE1_NOGC
33// RUN: %clang_profgen -fcoverage-mapping -fuse-ld=lld -Wl,--gc-sections %t0.o %t1.o -o %t1
34// RUN: env LLVM_PROFILE_FILE=%t.profraw %run %t1 | FileCheck %s --check-prefix=CHECK1
35// RUN: llvm-profdata show %t.profraw --all-functions | FileCheck %s --check-prefix=PROFILE1_GC
36
37// RUN: %clang_profgen -fcoverage-mapping -fuse-ld=lld %t0.o %t2.o -o %t2
38// RUN: env LLVM_PROFILE_FILE=%t.profraw %run %t2 | FileCheck %s --check-prefix=CHECK2
39// RUN: llvm-profdata show %t.profraw --all-functions | FileCheck %s --check-prefix=PROFILE2_NOGC
40// RUN: %clang_profgen -fcoverage-mapping -fuse-ld=lld -Wl,--gc-sections %t0.o %t2.o -o %t2
41// RUN: env LLVM_PROFILE_FILE=%t.profraw %run %t2 | FileCheck %s --check-prefix=CHECK2
42// RUN: llvm-profdata show %t.profraw --all-functions | FileCheck %s --check-prefix=PROFILE2_GC
43
44// CHECK1: strong
45// CHECK1: strong
46
47/// __profc__Z4weakv in %t1.o is local and has a zero value.
48/// Without GC it takes a duplicate entry.
49// PROFILE1_NOGC: _Z4weakv:
50// PROFILE1_NOGC-NEXT: Hash:
51// PROFILE1_NOGC-NEXT: Counters: 1
52// PROFILE1_NOGC-NEXT: Function count: 0
53// PROFILE1_NOGC: _Z4weakv:
54// PROFILE1_NOGC-NEXT: Hash:
55// PROFILE1_NOGC-NEXT: Counters: 1
56// PROFILE1_NOGC-NEXT: Function count: 2
57
58// PROFILE1_GC: _Z4weakv:
59// PROFILE1_GC-NEXT: Hash:
60// PROFILE1_GC-NEXT: Counters: 1
61// PROFILE1_GC-NEXT: Function count: 2
62// PROFILE1_GC-NOT: _Z4weakv:
63
64// CHECK2: weak
65// CHECK2: weak
66
67/// __profc__Z4weakv in %t2.o is weak and resolves to the value of %t0.o's copy.
68/// Without GC it takes a duplicate entry.
69// PROFILE2_NOGC: _Z4weakv:
70// PROFILE2_NOGC-NEXT: Hash:
71// PROFILE2_NOGC-NEXT: Counters: 1
72// PROFILE2_NOGC-NEXT: Function count: 2
73// PROFILE2_NOGC: _Z4weakv:
74// PROFILE2_NOGC-NEXT: Hash:
75// PROFILE2_NOGC-NEXT: Counters: 1
76// PROFILE2_NOGC-NEXT: Function count: 2
77
78// PROFILE2_GC: _Z4weakv:
79// PROFILE2_GC-NEXT: Hash:
80// PROFILE2_GC-NEXT: Counters: 1
81// PROFILE2_GC-NEXT: Function count: 2
82// PROFILE2_GC-NOT: _Z4weakv:
83
84#ifdef OBJ_1
85#include <stdio.h>
86
87void weak() { puts("strong"); }
88void foo() { weak(); }
89
90#elif defined(OBJ_2)
91#include <stdio.h>
92
93__attribute__((weak)) void weak() { puts("unreachable"); }
94void foo() { weak(); }
95
96#else
97#include <stdio.h>
98
99__attribute__((weak)) void weak() { puts(s: "weak"); }
100void foo();
101
102int main() {
103 foo();
104 weak();
105}
106#endif
107

source code of compiler-rt/test/profile/Linux/coverage-weak-lld.cpp