diff options
| author | Vedant Kumar <vsk@apple.com> | 2017-04-27 17:30:58 +0000 |
|---|---|---|
| committer | Vedant Kumar <vsk@apple.com> | 2017-04-27 17:30:58 +0000 |
| commit | 50c344f0925437ece1911b0ade401ac4f7fc9959 (patch) | |
| tree | 56a8623874fd7563ac6062851390e191bb5a2b7e /test/Profile | |
| parent | 41e19f971fe5f5f93c693389835147d9f6eb3b1d (diff) | |
[Profile] Add off-by-default -Wprofile-instr-missing warning
Clang warns that a profile is out-of-date if it can't find a profile
record for any function in a TU. This warning became noisy after llvm
started allowing dead-stripping of instrumented functions.
To fix this, this patch changes the existing profile out-of-date warning
(-Wprofile-instr-out-of-date) so that it only complains about mismatched
data. Further, it introduces a new, off-by-default warning about missing
function data (-Wprofile-instr-missing).
Differential Revision: https://reviews.llvm.org/D28867
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@301570 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/Profile')
| -rw-r--r-- | test/Profile/c-outdated-data.c | 16 |
1 files changed, 8 insertions, 8 deletions
diff --git a/test/Profile/c-outdated-data.c b/test/Profile/c-outdated-data.c index e61ad02d07..b686f94d80 100644 --- a/test/Profile/c-outdated-data.c +++ b/test/Profile/c-outdated-data.c @@ -4,23 +4,23 @@ // doesn't play well with warnings that have no line number. // RUN: llvm-profdata merge %S/Inputs/c-outdated-data.proftext -o %t.profdata -// RUN: %clang_cc1 -triple x86_64-apple-macosx10.9 -main-file-name c-outdated-data.c %s -o /dev/null -emit-llvm -fprofile-instrument-use-path=%t.profdata -Wprofile-instr-dropped 2>&1 | FileCheck %s -// CHECK: warning: profile data may be out of date: of 3 functions, 1 has no data and 1 has mismatched data that will be ignored +// RUN: %clang_cc1 -triple x86_64-apple-macosx10.9 -main-file-name c-outdated-data.c %s -o /dev/null -emit-llvm -fprofile-instrument-use-path=%t.profdata 2>&1 | FileCheck %s -check-prefix=NO_MISSING +// RUN: %clang_cc1 -triple x86_64-apple-macosx10.9 -main-file-name c-outdated-data.c %s -o /dev/null -emit-llvm -Wprofile-instr-missing -fprofile-instrument-use-path=%t.profdata 2>&1 | FileCheck %s -check-prefix=WITH_MISSING + +// NO_MISSING: warning: profile data may be out of date: of 3 functions, 1 has mismatched data that will be ignored +// NO_MISSING-NOT: 1 has no data + +// WITH_MISSING: warning: profile data may be out of date: of 3 functions, 1 has mismatched data that will be ignored +// WITH_MISSING: warning: profile data may be incomplete: of 3 functions, 1 has no data void no_usable_data() { int i = 0; if (i) {} - -#ifdef GENERATE_OUTDATED_DATA - if (i) {} -#endif } -#ifndef GENERATE_OUTDATED_DATA void no_data() { } -#endif int main(int argc, const char *argv[]) { no_usable_data(); |