1// REQUIRES: osx-ld64-live_support
2// REQUIRES: lto
3
4// RUN: %clang_profgen=%t.profraw -fcoverage-mapping -mllvm -enable-name-compression=false -DCODE=1 -Wl,-dead_strip \
5// RUN: -Wl,-sectalign,__DATA,__llvm_prf_cnts,0x1000 -Wl,-sectalign,__DATA,__llvm_prf_data,0x1000 -Wl,-sectalign,__DATA,__llvm_prf_bits,0x1000 -o %t %s
6// RUN: %run %t
7// RUN: llvm-profdata merge -o %t.profdata %t.profraw
8// RUN: llvm-profdata show --all-functions %t.profdata | FileCheck %s -check-prefix=PROF
9// RUN: llvm-cov show %t -instr-profile %t.profdata | FileCheck %s -check-prefix=COV
10// RUN: nm %t | FileCheck %s -check-prefix=NM
11// RUN: otool -V -s __DATA __llvm_prf_names %t | FileCheck %s -check-prefix=PRF_NAMES
12// RUN: otool -V -s __DATA __llvm_prf_cnts %t | FileCheck %s -check-prefix=PRF_CNTS
13
14// RUN: %clang_lto_profgen=%t.lto.profraw -fcoverage-mapping -mllvm -enable-name-compression=false -DCODE=1 -Wl,-dead_strip -Wl,-w -flto \
15// RUN: -Wl,-sectalign,__DATA,__llvm_prf_cnts,0x1000 -Wl,-sectalign,__DATA,__llvm_prf_data,0x1000 -Wl,-sectalign,__DATA,__llvm_prf_bits,0x1000 -o %t.lto %s
16// RUN: %run %t.lto
17// RUN: llvm-profdata merge -o %t.lto.profdata %t.lto.profraw
18// RUN: llvm-profdata show --all-functions %t.lto.profdata | FileCheck %s -check-prefix=PROF
19// RUN: llvm-cov show %t.lto -instr-profile %t.lto.profdata | FileCheck %s -check-prefix=COV
20// RUN: nm %t.lto | FileCheck %s -check-prefix=NM
21// RUN: otool -V -s __DATA __llvm_prf_names %t.lto | FileCheck %s -check-prefix=PRF_NAMES
22// RUN: otool -V -s __DATA __llvm_prf_cnts %t.lto | FileCheck %s -check-prefix=PRF_CNTS
23
24// Note: We expect foo() and some of the profiling data associated with it to
25// be dead-stripped.
26
27// Note: When there is no code in a program, we expect to see the exact same
28// set of external functions provided by the profile runtime.
29
30// RUN: %clang_profgen -fcoverage-mapping -Wl,-dead_strip -Wl,-sectalign,__DATA,__llvm_prf_cnts,0x1000 \
31// RUN: -Wl,-sectalign,__DATA,__llvm_prf_data,0x1000 -Wl,-sectalign,__DATA,__llvm_prf_bits,0x1000 -dynamiclib -o %t.nocode.dylib %s
32// RUN: nm -jgU %t.nocode.dylib > %t.nocode.syms
33// RUN: nm -jgU %t | sed -e '/_\{1,\}main/d' -e '/_\{1,\}mh_execute_header/d' > %t.code.syms
34// RUN: diff %t.nocode.syms %t.code.syms
35
36#ifdef CODE
37
38// COV: [[@LINE+1]]{{ *}}|{{ *}}0|void foo()
39void foo() {}
40
41// COV: [[@LINE+1]]{{ *}}|{{ *}}1|int main
42int main() { return 0; }
43
44#endif // CODE
45
46// NM-NOT: foo
47
48// PROF: Counters:
49// PROF-NEXT: main:
50// PROF-NEXT: Hash:
51// PROF-NEXT: Counters: 1
52// PROF-NEXT: Function count: 1
53// PROF-NEXT: Instrumentation level: Front-end
54// PROF-NEXT: Functions shown: 1
55// PROF-NEXT: Total functions: 1
56// PROF-NEXT: Maximum function count: 1
57// PROF-NEXT: Maximum internal block count: 0
58
59// Note: We don't expect the names of dead-stripped functions to disappear from
60// __llvm_prf_names, because collectPGOFuncNameStrings() glues the names
61// together.
62
63// PRF_NAMES: Contents of (__DATA,__llvm_prf_names) section
64// PRF_NAMES-NEXT: {{.*}} 08 00 66 6f 6f 01 6d 61 69 6e
65// | | f o o # m a i n
66// | |___________|
67// | |
68// UncompressedLen = 8 |
69// |
70// CompressedLen = 0
71
72// Note: We expect the profile counters for dead-stripped functions to also be
73// dead-stripped.
74
75// PRF_CNTS: Contents of (__DATA,__llvm_prf_cnts) section
76// PRF_CNTS-NEXT: {{.*}} 00 00 00 00 00 00 00 00
77

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source code of compiler-rt/test/profile/instrprof-darwin-dead-strip.c