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Imported Upstream version 5.18.0.179

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Former-commit-id: 67aa10e65b237e1c4537630979ee99ebe1374215
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2018-10-25 08:34:57 +00:00
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external/llvm/test/tools/llvm-profdata/overflow-instr.test vendored Normal file
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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