llvm-project/clang/test/Profile
serge-sans-paille de02a75e39 [PGO] Fix computation of function Hash
And bump its version number accordingly.

This is a patched recommit of 7c298c104b

Previous hash implementation was incorrectly passing an uint64_t, that got converted
to an uint8_t, to finalize the hash computation. This led to different functions
having the same hash if they only differ by the remaining statements, which is
incorrect.

Added a new test case that trivially tests that a small function change is
reflected in the hash value.

Not that as this patch fixes the hash computation, it would invalidate all hashes
computed before that patch applies, this is why we bumped the version number.

Update profile data hash entries due to hash function update, except for binary
version, in which case we keep the buggy behavior for backward compatibility.

Differential Revision: https://reviews.llvm.org/D79961
2020-05-27 09:15:21 +02:00
..
Inputs [PGO] Fix computation of function Hash 2020-05-27 09:15:21 +02:00
README
c-avoid-direct-call.c
c-captured.c
c-collision.c [PGO] Fix computation of function Hash 2020-05-27 09:15:21 +02:00
c-counter-overflows.c
c-general.c [PGO] Fix computation of function Hash 2020-05-27 09:15:21 +02:00
c-generate.c
c-indirect-call.c
c-linkage-available_externally.c
c-linkage.c
c-outdated-data.c
c-ternary.c
c-unprofiled-blocks.c
c-unprofiled.c
c-unreachable-after-switch.c
cxx-abc-deleting-dtor.cpp [MS] Don't emit coverage for deleting dtors 2019-02-26 20:42:52 +00:00
cxx-class.cpp
cxx-hash-v2.cpp
cxx-implicit.cpp
cxx-indirect-call.cpp
cxx-lambda.cpp
cxx-linkage.cpp
cxx-missing-bodies.cpp
cxx-rangefor.cpp
cxx-stmt-initializers.cpp
cxx-structors.cpp
cxx-templates.cpp [InstrProf] Use separate comdat group for data and counters 2019-02-27 23:38:44 +00:00
cxx-throws.cpp
cxx-virtual-destructor-calls.cpp
def-assignop.cpp Reland: [Coverage] Revise format to reduce binary size 2020-02-28 18:12:04 -08:00
def-ctors.cpp Reland: [Coverage] Revise format to reduce binary size 2020-02-28 18:12:04 -08:00
def-dtors.cpp Reland: [Coverage] Revise format to reduce binary size 2020-02-28 18:12:04 -08:00
func-entry.c
gcc-flag-compatibility.c Update clang tests for new LLVM IR backslash printing in r374415 2019-10-10 18:36:41 +00:00
misexpect-branch-cold.c Reland "clang-misexpect: Profile Guided Validation of Performance Annotations in LLVM" 2019-09-11 16:19:50 +00:00
misexpect-branch-nonconst-expected-val.c Reland "clang-misexpect: Profile Guided Validation of Performance Annotations in LLVM" 2019-09-11 16:19:50 +00:00
misexpect-branch-unpredictable.c Reland "clang-misexpect: Profile Guided Validation of Performance Annotations in LLVM" 2019-09-11 16:19:50 +00:00
misexpect-branch.c Reland "clang-misexpect: Profile Guided Validation of Performance Annotations in LLVM" 2019-09-11 16:19:50 +00:00
misexpect-switch-default.c Reland "clang-misexpect: Profile Guided Validation of Performance Annotations in LLVM" 2019-09-11 16:19:50 +00:00
misexpect-switch-nonconst.c Reland "clang-misexpect: Profile Guided Validation of Performance Annotations in LLVM" 2019-09-11 16:19:50 +00:00
misexpect-switch-only-default-case.c Reland "clang-misexpect: Profile Guided Validation of Performance Annotations in LLVM" 2019-09-11 16:19:50 +00:00
misexpect-switch.c Reland "clang-misexpect: Profile Guided Validation of Performance Annotations in LLVM" 2019-09-11 16:19:50 +00:00
objc-general.m
profile-does-not-exist.c
profile-summary.c

README

These are tests for instrumentation based profiling.  This specifically means
the -fprofile-instr-generate and -fprofile-instr-use driver flags.

Tests in this directory should usually test both:

  - the generation of instrumentation (-fprofile-instr-generate), and
  - the use of profile data from instrumented runs (-fprofile-instr-use).

In order to test -fprofile-instr-use without actually running an instrumented
program, .profdata files are checked into Inputs/.

The input source files must include a main function such that building with
-fprofile-instr-generate and running the resulting program generates the same
.profdata file that is consumed by the tests for -fprofile-instr-use.  Even
tests that only check -fprofile-instr-use should include such a main function,
so that profile data can be regenerated as the .profdata file format evolves.