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author | Justin Bogner <mail@justinbogner.com> | 2014-06-26 01:45:07 +0000 |
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committer | Justin Bogner <mail@justinbogner.com> | 2014-06-26 01:45:07 +0000 |
commit | c912e4c787ae01a34fa48576e099fcb5950dd828 (patch) | |
tree | 9b080c3726d35252f76dc40cc9fa021f69f28a40 /test/Profile/c-unprofiled.c | |
parent | 5b3552f7879b2eec0cd69d282b6f2b04b73b20e1 (diff) | |
download | clang-c912e4c787ae01a34fa48576e099fcb5950dd828.tar.gz clang-c912e4c787ae01a34fa48576e099fcb5950dd828.tar.bz2 clang-c912e4c787ae01a34fa48576e099fcb5950dd828.tar.xz |
CodeGen: Improve warnings about uninstrumented files when profiling
Improve the warning when building with -fprofile-instr-use and a file
appears not to have been profiled at all. This keys on whether a
function is defined in the main file or not to avoid false negatives
when one includes a header with functions that have been profiled.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@211760 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/Profile/c-unprofiled.c')
-rw-r--r-- | test/Profile/c-unprofiled.c | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/test/Profile/c-unprofiled.c b/test/Profile/c-unprofiled.c new file mode 100644 index 0000000000..275cd2d145 --- /dev/null +++ b/test/Profile/c-unprofiled.c @@ -0,0 +1,26 @@ +// Test that unprofiled files are recognized. Here, we have two functions in the +// profile, main() and function_in_header, but we use the profile on a file that +// has the profile-less some_unprofiled_function so that the only profiled code +// in #included in a header. + +// FIXME: It would be nice to use -verify here instead of FileCheck, but -verify +// doesn't play well with warnings that have no line number. + +// RUN: llvm-profdata merge %S/Inputs/c-unprofiled.proftext -o %t.profdata +// RUN: %clang_cc1 -triple x86_64-apple-macosx10.9 -main-file-name c-unprofiled.c -I %S/Inputs/ %s -o /dev/null -emit-llvm -fprofile-instr-use=%t.profdata -Wprofile-instr-unprofiled 2>&1 | FileCheck %s + +// CHECK: warning: no profile data available for file "c-unprofiled.c" + +#include "profiled_header.h" + +#ifdef GENERATE_OUTDATED_DATA +int main(int argc, const char *argv[]) { + function_in_header(0); + return 0; +} +#else +void some_unprofiled_function(int i) { + if (i) + function_in_header(i); +} +#endif |