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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
44 lines
2.5 KiB
Plaintext
44 lines
2.5 KiB
Plaintext
Tests for overflow when merging sampled profiles.
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1- Merge profile having maximum counts with itself and verify overflow detected
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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
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RUN: llvm-profdata show -sample %t.out | FileCheck %s --check-prefix=SHOW_OVERFLOW
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MERGE_OVERFLOW: {{.*}}: main: Counter overflow
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SHOW_OVERFLOW: Function: main: 2000, 0, 2 sampled lines
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SHOW_OVERFLOW-NEXT: Samples collected in the function's body {
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SHOW_OVERFLOW-NEXT: 1: 1000, calls: _Z3bari:18446744073709551615
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SHOW_OVERFLOW-NEXT: 2: 1000, calls: _Z3fooi:18446744073709551615
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SHOW_OVERFLOW-NEXT: }
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SHOW_OVERFLOW-NEXT: No inlined callsites in this function
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SHOW_OVERFLOW-NEXT: Function: _Z3fooi: 18446744073709551615, 2000, 1 sampled lines
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SHOW_OVERFLOW-NEXT: Samples collected in the function's body {
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SHOW_OVERFLOW-NEXT: 1: 18446744073709551615
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SHOW_OVERFLOW-NEXT: }
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SHOW_OVERFLOW-NEXT: No inlined callsites in this function
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SHOW_OVERFLOW-NEXT: Function: _Z3bari: 18446744073709551615, 2000, 1 sampled lines
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SHOW_OVERFLOW-NEXT: Samples collected in the function's body {
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SHOW_OVERFLOW-NEXT: 1: 18446744073709551615
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SHOW_OVERFLOW-NEXT: }
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SHOW_OVERFLOW-NEXT: No inlined callsites in this function
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2- Merge profile having maximum counts by itself and verify no overflow
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RUN: llvm-profdata merge -sample %p/Inputs/overflow-sample.proftext -o %t.out 2>&1 | FileCheck %s -allow-empty -check-prefix=MERGE_NO_OVERFLOW
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RUN: llvm-profdata show -sample %t.out | FileCheck %s --check-prefix=SHOW_NO_OVERFLOW
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MERGE_NO_OVERFLOW-NOT: {{.*}}: main: Counter overflow
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SHOW_NO_OVERFLOW: Function: main: 1000, 0, 2 sampled lines
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SHOW_NO_OVERFLOW-NEXT: Samples collected in the function's body {
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SHOW_NO_OVERFLOW-NEXT: 1: 500, calls: _Z3bari:18446744073709551615
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SHOW_NO_OVERFLOW-NEXT: 2: 500, calls: _Z3fooi:18446744073709551615
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SHOW_NO_OVERFLOW-NEXT: }
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SHOW_NO_OVERFLOW-NEXT: No inlined callsites in this function
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SHOW_NO_OVERFLOW-NEXT: Function: _Z3fooi: 18446744073709551615, 1000, 1 sampled lines
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SHOW_NO_OVERFLOW-NEXT: Samples collected in the function's body {
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SHOW_NO_OVERFLOW-NEXT: 1: 18446744073709551615
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SHOW_NO_OVERFLOW-NEXT: }
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SHOW_NO_OVERFLOW-NEXT: No inlined callsites in this function
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SHOW_NO_OVERFLOW-NEXT: Function: _Z3bari: 18446744073709551615, 1000, 1 sampled lines
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SHOW_NO_OVERFLOW-NEXT: Samples collected in the function's body {
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SHOW_NO_OVERFLOW-NEXT: 1: 18446744073709551615
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SHOW_NO_OVERFLOW-NEXT: }
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SHOW_NO_OVERFLOW-NEXT: No inlined callsites in this function
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