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llvm-project/llvm/test/tools/llvm-profdata/overflow-sample.test

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[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
2015-12-17 05:45:43 +08:00
Tests for overflow when merging sampled profiles.
1- Merge profile having maximum counts with itself and verify overflow detected
RUN: llvm-profdata merge -sample %p/Inputs/overflow-sample.proftext %p/Inputs/overflow-sample.proftext -o %t.out 2>&1 | FileCheck %s -check-prefix=MERGE_OVERFLOW
RUN: llvm-profdata show -sample %t.out | FileCheck %s --check-prefix=SHOW_OVERFLOW
MERGE_OVERFLOW: {{.*}}: main: Counter overflow
[sampleprof] Drop test dependency on the string hash func (NFC) The SampleProfWriter emits function information in an order determined by the string hash function. The situation is a bit brittle, because changing the hash function can break the tests. Instead of sorting the function samples to get a relaible ordering (that might be too expensive), make the tests not depend on a particular ordering of function samples. Differential Revision: https://reviews.llvm.org/D32516 llvm-svn: 301419
2017-04-26 23:39:53 +08:00
SHOW_OVERFLOW-DAG: Function: main: 2000, 0, 2 sampled lines
SHOW_OVERFLOW-DAG: Samples collected in the function's body {
SHOW_OVERFLOW-DAG: 1: 1000, calls: _Z3bari:18446744073709551615
SHOW_OVERFLOW-DAG: 2: 1000, calls: _Z3fooi:18446744073709551615
SHOW_OVERFLOW-DAG: }
SHOW_OVERFLOW-DAG: No inlined callsites in this function
SHOW_OVERFLOW-DAG: Function: _Z3fooi: 18446744073709551615, 2000, 1 sampled lines
SHOW_OVERFLOW-DAG: Samples collected in the function's body {
SHOW_OVERFLOW-DAG: 1: 18446744073709551615
SHOW_OVERFLOW-DAG: }
SHOW_OVERFLOW-DAG: No inlined callsites in this function
SHOW_OVERFLOW-DAG: Function: _Z3bari: 18446744073709551615, 2000, 1 sampled lines
SHOW_OVERFLOW-DAG: Samples collected in the function's body {
SHOW_OVERFLOW-DAG: 1: 18446744073709551615
SHOW_OVERFLOW-DAG: }
SHOW_OVERFLOW-DAG: No inlined callsites in this function
[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
2015-12-17 05:45:43 +08:00
2- Merge profile having maximum counts by itself and verify no overflow
RUN: llvm-profdata merge -sample %p/Inputs/overflow-sample.proftext -o %t.out 2>&1 | FileCheck %s -allow-empty -check-prefix=MERGE_NO_OVERFLOW
RUN: llvm-profdata show -sample %t.out | FileCheck %s --check-prefix=SHOW_NO_OVERFLOW
MERGE_NO_OVERFLOW-NOT: {{.*}}: main: Counter overflow
[sampleprof] Drop test dependency on the string hash func (NFC) The SampleProfWriter emits function information in an order determined by the string hash function. The situation is a bit brittle, because changing the hash function can break the tests. Instead of sorting the function samples to get a relaible ordering (that might be too expensive), make the tests not depend on a particular ordering of function samples. Differential Revision: https://reviews.llvm.org/D32516 llvm-svn: 301419
2017-04-26 23:39:53 +08:00
SHOW_NO_OVERFLOW-DAG: Function: main: 1000, 0, 2 sampled lines
SHOW_NO_OVERFLOW-DAG: Samples collected in the function's body {
SHOW_NO_OVERFLOW-DAG: 1: 500, calls: _Z3bari:18446744073709551615
SHOW_NO_OVERFLOW-DAG: 2: 500, calls: _Z3fooi:18446744073709551615
SHOW_NO_OVERFLOW-DAG: }
SHOW_NO_OVERFLOW-DAG: No inlined callsites in this function
SHOW_NO_OVERFLOW-DAG: Function: _Z3fooi: 18446744073709551615, 1000, 1 sampled lines
SHOW_NO_OVERFLOW-DAG: Samples collected in the function's body {
SHOW_NO_OVERFLOW-DAG: 1: 18446744073709551615
SHOW_NO_OVERFLOW-DAG: }
SHOW_NO_OVERFLOW-DAG: No inlined callsites in this function
SHOW_NO_OVERFLOW-DAG: Function: _Z3bari: 18446744073709551615, 1000, 1 sampled lines
SHOW_NO_OVERFLOW-DAG: Samples collected in the function's body {
SHOW_NO_OVERFLOW-DAG: 1: 18446744073709551615
SHOW_NO_OVERFLOW-DAG: }
SHOW_NO_OVERFLOW-DAG: No inlined callsites in this function