llvm-project/llvm
Diego Novillo 748b3ffe3b SamplePGO - Add flag to check sampling coverage.
This adds the flag -mllvm -sample-profile-check-coverage=N to the
SampleProfile pass. N is the percent of input sample records that the
user expects to apply.  If the pass does not use N% (or more) of the
sample records in the input, it emits a warning.

This is useful to detect some forms of stale profiles. If the code has
drifted enough from the original profile, there will be records that do
not match the IR anymore.

This will not detect cases where a sample profile record for line L is
referring to some other instructions that also used to be at line L.

llvm-svn: 251568
2015-10-28 22:30:25 +00:00
..
autoconf Don't use bashism/kshism of test ==. From Kamil Rytarowski. 2015-09-12 16:30:32 +00:00
bindings [OCaml] Expose Llvm.{set_,}unnamed_addr. 2015-10-21 17:43:02 +00:00
cmake [CMake] Fixing dependency issue with parallel make when building with LLVM_OPTIMIZED_TABLEGEN. 2015-10-23 19:48:17 +00:00
docs docs: document `x` mangling in LangRef 2015-10-25 20:39:35 +00:00
examples [JIT/Examples] Fix Fibonacci so that it runs again. 2015-10-17 06:36:46 +00:00
include Revert "r251451 - [AliasSetTracker] Use mod/ref information for UnknownInstr" 2015-10-28 22:13:41 +00:00
lib SamplePGO - Add flag to check sampling coverage. 2015-10-28 22:30:25 +00:00
projects [CMake] Disable adding the test suite as a projects subdirectory 2015-10-28 18:36:56 +00:00
resources
test SamplePGO - Add flag to check sampling coverage. 2015-10-28 22:30:25 +00:00
tools Prefer ranlib mode over ar mode. 2015-10-27 16:37:49 +00:00
unittests [Orc] Require target support for host before running execution unit tests. 2015-10-28 20:08:51 +00:00
utils lit/TestRunner.py: Factor variable subsitution into an own function; NFCI 2015-10-28 02:36:45 +00:00
.arcconfig
.clang-format
.clang-tidy
.gitignore
CMakeLists.txt [CMake] Get rid of LLVM_DYLIB_EXPORT_ALL, and make it the default, add libLLVM-C on darwin to cover the C API needs. 2015-10-27 16:02:04 +00:00
CODE_OWNERS.TXT Add myself as the the code owner for the AVR backend 2015-10-28 00:24:54 +00:00
CREDITS.TXT
LICENSE.TXT
LLVMBuild.txt
Makefile
Makefile.common
Makefile.config.in
Makefile.rules
README.txt
configure Don't use bashism/kshism of test ==. From Kamil Rytarowski. 2015-09-12 16:30:32 +00:00
llvm.spec.in

README.txt

Low Level Virtual Machine (LLVM)
================================

This directory and its subdirectories contain source code for LLVM,
a toolkit for the construction of highly optimized compilers,
optimizers, and runtime environments.

LLVM is open source software. You may freely distribute it under the terms of
the license agreement found in LICENSE.txt.

Please see the documentation provided in docs/ for further
assistance with LLVM, and in particular docs/GettingStarted.rst for getting
started with LLVM and docs/README.txt for an overview of LLVM's
documentation setup.

If you're writing a package for LLVM, see docs/Packaging.rst for our
suggestions.