1Tests for overflow when merging instrumented profiles.
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31- Merge profile having maximum counts with itself and verify overflow detected and saturation occurred
4RUN: 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
5RUN: llvm-profdata show -instr -all-functions -counts %t.out | FileCheck %s --check-prefix=SHOW_OVERFLOW
6MERGE_OVERFLOW: {{.*}}: overflow: Counter overflow
7SHOW_OVERFLOW: Function count: 18446744073709551615
8SHOW_OVERFLOW-NEXT: Block counts: [18446744073709551615, 18446744073709551615]
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102- Merge profile having maximum counts by itself and verify no overflow
11RUN: llvm-profdata merge -instr %p/Inputs/overflow-instr.proftext -o %t.out 2>&1 | FileCheck %s -check-prefix=MERGE_NO_OVERFLOW -allow-empty
12RUN: llvm-profdata show -instr -all-functions -counts %t.out | FileCheck %s --check-prefix=SHOW_NO_OVERFLOW
13MERGE_NO_OVERFLOW-NOT: {{.*}}: overflow: Counter overflow
14SHOW_NO_OVERFLOW: Function count: 18446744073709551615
15SHOW_NO_OVERFLOW-NEXT: Block counts: [9223372036854775808, 18446744073709551615]
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