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ProfileData: Allow multiple profiles in RawInstrProfReader

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Allow multiple raw profiles to coexist in a single .profraw file,
given the following conditions:

- Zero padding at the end of or between profiles will be skipped.
- Each profile must start with a valid header.
- Mixing endianness or pointer sizes in concatenated profiles files is
  not allowed.

This is needed to handle cases where a program's shared libraries are
profiled as well as the main executable itself, as we'll need to emit
each executable's counters. Combining the tables in the runtime would
be expensive for the instrumented program.

rdar://16918688

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@208938 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Justin Bogner
2014-05-16 00:38:00 +00:00
parent 9364e63d79
commit 6d81fc75c4
3 changed files with 95 additions and 4 deletions
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64
test/tools/llvm-profdata/raw-two-profiles.test Normal file
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RUN: printf '\201rforpl\377' > %t-foo.profraw
RUN: printf '\1\0\0\0\0\0\0\0' >> %t-foo.profraw
RUN: printf '\1\0\0\0\0\0\0\0' >> %t-foo.profraw
RUN: printf '\1\0\0\0\0\0\0\0' >> %t-foo.profraw
RUN: printf '\3\0\0\0\0\0\0\0' >> %t-foo.profraw
RUN: printf '\0\0\4\0\1\0\0\0' >> %t-foo.profraw
RUN: printf '\0\0\4\0\2\0\0\0' >> %t-foo.profraw
RUN: printf '\3\0\0\0' >> %t-foo.profraw
RUN: printf '\1\0\0\0' >> %t-foo.profraw
RUN: printf '\1\0\0\0\0\0\0\0' >> %t-foo.profraw
RUN: printf '\0\0\4\0\2\0\0\0' >> %t-foo.profraw
RUN: printf '\0\0\4\0\1\0\0\0' >> %t-foo.profraw
RUN: printf '\023\0\0\0\0\0\0\0' >> %t-foo.profraw
RUN: printf 'foo' >> %t-foo.profraw
RUN: printf '\201rforpl\377' > %t-bar.profraw
RUN: printf '\1\0\0\0\0\0\0\0' >> %t-bar.profraw
RUN: printf '\1\0\0\0\0\0\0\0' >> %t-bar.profraw
RUN: printf '\2\0\0\0\0\0\0\0' >> %t-bar.profraw
RUN: printf '\3\0\0\0\0\0\0\0' >> %t-bar.profraw
RUN: printf '\0\0\6\0\1\0\0\0' >> %t-bar.profraw
RUN: printf '\0\0\6\0\2\0\0\0' >> %t-bar.profraw
RUN: printf '\3\0\0\0' >> %t-bar.profraw
RUN: printf '\2\0\0\0' >> %t-bar.profraw
RUN: printf '\2\0\0\0\0\0\0\0' >> %t-bar.profraw
RUN: printf '\0\0\6\0\2\0\0\0' >> %t-bar.profraw
RUN: printf '\0\0\6\0\1\0\0\0' >> %t-bar.profraw
RUN: printf '\067\0\0\0\0\0\0\0' >> %t-bar.profraw
RUN: printf '\101\0\0\0\0\0\0\0' >> %t-bar.profraw
RUN: printf 'bar' >> %t-bar.profraw
Versions of the profiles that are padded to eight byte alignment.
RUN: cat %t-foo.profraw > %t-foo-padded.profraw
RUN: printf '\0\0\0\0\0' >> %t-foo-padded.profraw
RUN: cat %t-bar.profraw > %t-bar-padded.profraw
RUN: printf '\0\0\0\0\0' >> %t-bar-padded.profraw
RUN: cat %t-foo.profraw %t-bar.profraw > %t-nopad.profraw
RUN: cat %t-foo-padded.profraw %t-bar.profraw > %t-pad-between.profraw
RUN: cat %t-foo-padded.profraw %t-bar-padded.profraw > %t-pad.profraw
RUN: llvm-profdata show %t-nopad.profraw -all-functions -counts | FileCheck %s
RUN: llvm-profdata show %t-pad-between.profraw -all-functions -counts | FileCheck %s
RUN: llvm-profdata show %t-pad.profraw -all-functions -counts | FileCheck %s
CHECK: Counters:
CHECK: foo:
CHECK: Hash: 0x0000000000000001
CHECK: Counters: 1
CHECK: Function count: 19
CHECK: Block counts: []
CHECK: bar:
CHECK: Hash: 0x0000000000000002
CHECK: Counters: 2
CHECK: Function count: 55
CHECK: Block counts: [65]
CHECK: Functions shown: 2
CHECK: Total functions: 2
CHECK: Maximum function count: 55
CHECK: Maximum internal block count: 65