diff options
| author | Nathan Slingerland <slingn@gmail.com> | 2015-12-16 21:45:43 +0000 |
|---|---|---|
| committer | Nathan Slingerland <slingn@gmail.com> | 2015-12-16 21:45:43 +0000 |
| commit | 48dd080c77c6a6398906b6db73d015fee15d8591 (patch) | |
| tree | 4ecca36c8ea7d92f85c74274579a16d277b75e13 /llvm/test/tools/llvm-profdata/overflow-instr.test | |
| parent | 031bed291ee7feccd2272efac2f7fce98c8353de (diff) | |
| download | bcm5719-llvm-48dd080c77c6a6398906b6db73d015fee15d8591.tar.gz bcm5719-llvm-48dd080c77c6a6398906b6db73d015fee15d8591.zip | |
[PGO] Handle and report overflow during profile merge for all types of data
Summary: Surface counter overflow when merging profile data. Merging still occurs on overflow but counts saturate to the maximum representable value. Overflow is reported to the user.
Reviewers: davidxl, dnovillo, silvas
Subscribers: llvm-commits
Differential Revision: http://reviews.llvm.org/D15547
llvm-svn: 255825
Diffstat (limited to 'llvm/test/tools/llvm-profdata/overflow-instr.test')
| -rw-r--r-- | llvm/test/tools/llvm-profdata/overflow-instr.test | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/llvm/test/tools/llvm-profdata/overflow-instr.test b/llvm/test/tools/llvm-profdata/overflow-instr.test new file mode 100644 index 00000000000..5b9a94af9b2 --- /dev/null +++ b/llvm/test/tools/llvm-profdata/overflow-instr.test @@ -0,0 +1,17 @@ +Tests for overflow when merging instrumented profiles. + +1- Merge profile having maximum counts with itself and verify overflow detected and saturation occurred +RUN: llvm-profdata merge -instr %p/Inputs/overflow-instr.proftext %p/Inputs/overflow-instr.proftext -o %t.out 2>&1 | FileCheck %s -check-prefix=MERGE_OVERFLOW +RUN: llvm-profdata show -instr %t.out | FileCheck %s --check-prefix=SHOW_OVERFLOW +MERGE_OVERFLOW: {{.*}}: overflow: Counter overflow +SHOW_OVERFLOW: Total functions: 1 +SHOW_OVERFLOW-NEXT: Maximum function count: 18446744073709551615 +SHOW_OVERFLOW-NEXT: Maximum internal block count: 18446744073709551615 + +2- Merge profile having maximum counts by itself and verify no overflow +RUN: llvm-profdata merge -instr %p/Inputs/overflow-instr.proftext -o %t.out 2>&1 | FileCheck %s -check-prefix=MERGE_NO_OVERFLOW -allow-empty +RUN: llvm-profdata show -instr %t.out | FileCheck %s --check-prefix=SHOW_NO_OVERFLOW +MERGE_NO_OVERFLOW-NOT: {{.*}}: overflow: Counter overflow +SHOW_NO_OVERFLOW: Total functions: 1 +SHOW_NO_OVERFLOW-NEXT: Maximum function count: 18446744073709551615 +SHOW_NO_OVERFLOW-NEXT: Maximum internal block count: 18446744073709551615 |
