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[profile] Test the exported symbol set for empty programs 

Programs without any code in them should export the exact same set of
symbols as programs with code, at least on Darwin. This is done to make
text-based API verification possible for certain Darwin frameworks.

llvm-svn: 326351
This commit is contained in:
Vedant Kumar 2018-02-28 19:00:16 +00:00
parent 9a041a7522
commit a4c56923d2
1 changed files with 14 additions and 2 deletions
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16
compiler-rt/test/profile/instrprof-darwin-dead-strip.c
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@ -1,7 +1,7 @@
// REQUIRES: osx-ld64-live_support
// REQUIRES: lto
// RUN: %clang_profgen=%t.profraw -fcoverage-mapping -mllvm -enable-name-compression=false -Wl,-dead_strip -o %t %s
// RUN: %clang_profgen=%t.profraw -fcoverage-mapping -mllvm -enable-name-compression=false -DCODE=1 -Wl,-dead_strip -o %t %s
// RUN: %run %t
// RUN: llvm-profdata merge -o %t.profdata %t.profraw
// RUN: llvm-profdata show --all-functions %t.profdata | FileCheck %s -check-prefix=PROF
@ -10,7 +10,7 @@
// RUN: otool -s __DATA __llvm_prf_names %t | FileCheck %s -check-prefix=PRF_NAMES
// RUN: otool -s __DATA __llvm_prf_cnts %t | FileCheck %s -check-prefix=PRF_CNTS
// RUN: %clang_lto_profgen=%t.lto.profraw -fcoverage-mapping -mllvm -enable-name-compression=false -Wl,-dead_strip -flto -o %t.lto %s
// RUN: %clang_lto_profgen=%t.lto.profraw -fcoverage-mapping -mllvm -enable-name-compression=false -DCODE=1 -Wl,-dead_strip -flto -o %t.lto %s
// RUN: %run %t.lto
// RUN: llvm-profdata merge -o %t.lto.profdata %t.lto.profraw
// RUN: llvm-profdata show --all-functions %t.lto.profdata | FileCheck %s -check-prefix=PROF
@ -22,12 +22,24 @@
// Note: We expect foo() and some of the profiling data associated with it to
// be dead-stripped.
// Note: When there is no code in a program, we expect to see the exact same
// set of external functions provided by the profile runtime.
// RUN: %clang_profgen -fcoverage-mapping -Wl,-dead_strip -dynamiclib -o %t.nocode.dylib %s
// RUN: nm -jgU %t.nocode.dylib > %t.nocode.syms
// RUN: nm -jgU %t | grep -vE "main|foo|mh_execute_header" > %t.code.syms
// RUN: diff %t.nocode.syms %t.code.syms
#ifdef CODE
// COV: [[@LINE+1]]{{ *}}|{{ *}}0|void foo()
void foo() {}
// COV: [[@LINE+1]]{{ *}}|{{ *}}1|int main
int main() { return 0; }
#endif // CODE
// NM-NOT: foo
// PROF: Counters: