llvm/test/tools/llvm-profdata/overflow.proftext
Nathan Slingerland 1c2b998913 [llvm-profdata] Change instr prof counter overflow to saturate rather than discard
Summary: This changes overflow handling during instrumentation profile merge. Rathar than throwing away records that would result in counter overflow, merged counts are instead clamped to the maximum representable value. A warning about counter overflow is still surfaced to the user as before.

Reviewers: dnovillo, davidxl, silvas

Subscribers: llvm-commits

Differential Revision: http://reviews.llvm.org/D14893

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@254525 91177308-0d34-0410-b5e6-96231b3b80d8
2015-12-02 18:19:24 +00:00

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# RUN: llvm-profdata merge %s -o %t.out 2>&1 | FileCheck %s --check-prefix=MERGE
# RUN: llvm-profdata show %t.out | FileCheck %s --check-prefix=SHOW
# MERGE: overflow.proftext: overflow: Counter overflow
# SHOW: Total functions: 1
# SHOW: Maximum function count: 18446744073709551615
# SHOW: Maximum internal block count: 18446744073709551615
overflow
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3
18446744073709551615
9223372036854775808
18446744073709551615
overflow
1
3
9223372036854775808
9223372036854775808
0