| 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 |