llvm/test/tools/llvm-profdata/count-mismatch.proftext
Nathan Slingerland 0833ccb526 [llvm-profdata] Improve error messaging when merging mismatched profile data
Summary:
This change tries to make the root cause of instrumented profile data merge failures clearer.

Previous:

$ llvm-profdata merge test_0.profraw test_1.profraw -o test_merged.profdata
test_1.profraw: foo: Function count mismatch
test_1.profraw: bar: Function count mismatch
test_1.profraw: baz: Function count mismatch
...

Changed:

$ llvm-profdata merge test_0.profraw test_1.profraw -o test_merged.profdata
test_1.profraw: foo: Function basic block count change detected (counter mismatch)
Make sure that all profile data to be merged is generated from the same binary.
test_1.profraw: bar: Function basic block count change detected (counter mismatch)
test_1.profraw: baz: Function basic block count change detected (counter mismatch)
...

Reviewers: dnovillo, davidxl, bogner

Subscribers: llvm-commits

Differential Revision: http://reviews.llvm.org/D14739

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@253384 91177308-0d34-0410-b5e6-96231b3b80d8
2015-11-17 22:08:53 +00:00

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# Make sure we don't try to combine counters with the same function
# name and a matching hash if the number of counters differs
# RUN: llvm-profdata merge %s -o %t.profdata 2>&1 | FileCheck -check-prefix=MERGE_ERRS %s
# RUN: llvm-profdata show %t.profdata -all-functions -counts > %t.out
# RUN: FileCheck %s -input-file %t.out
foo
1024
4
1
2
4
8
# The hash matches, but we can't combine these because the number of
# counters differs.
# MERGE_ERRS: count-mismatch.proftext: foo: Function basic block count change detected (counter mismatch)
# MERGE_ERRS: Make sure that all profile data to be merged is generated from the same binary.
foo
1024
3
2
4
8
# This one does match, so it should combine with the first just fine.
# CHECK: Hash: 0x{{0+}}400
# CHECK-NEXT: Counters: 4
# CHECK-NEXT: Function count: 5
# CHECK-NEXT: Block counts: [10, 20, 40]
foo
1024
4
4
8
16
32
# CHECK: Total functions: 1
# CHECK: Maximum function count: 5
# CHECK: Maximum internal block count: 40