llvm-project/llvm
Matt Davis 362ea5f2c3 [llvm-mca] Add HardwareUnit and Context classes.
This patch moves the construction of the default backend from llvm-mca.cpp and
into mca::Context. The Context class is responsible for holding ownership of
the simulated hardware components. These components are subclasses of
HardwareUnit. Right now the HardwareUnit is pretty bare-bones, but eventually
we might want to add some common functionality across all hardware components,
such as isReady() or something similar.

I have a feeling this patch will probably need some updates, but it's a start.
One thing I am not particularly fond of is the rather large interface for
createDefaultPipeline. That convenience routine takes a rather large set of
inputs from the llvm-mca driver, where many of those inputs are generated via
command line options.

One item I think we might want to change is the separating of ownership of
hardware components (owned by the context) and the pipeline (which owns
Stages). In short, a Pipeline owns Stages, a Context (currently) owns hardware.
The Pipeline's Stages make use of the components, and thus there is a lifetime
dependency generated. The components must outlive the pipeline. We could solve
this by having the Context also own the Pipeline, and not return a
unique_ptr<Pipeline>. Now that I think about it, I like that idea more.

Differential Revision: https://reviews.llvm.org/D48691

llvm-svn: 336456
2018-07-06 18:03:14 +00:00
..
bindings
cmake [cmake] Change WIN32 test to CMAKE_HOST_WIN32 2018-06-29 10:34:37 +00:00
docs nm: Add -no-weak flag for hiding weak symbols 2018-07-02 17:24:37 +00:00
examples [ORC] Update JITCompileCallbackManager to support multi-threaded code. 2018-05-30 01:57:45 +00:00
include [Local] replaceAllDbgUsesWith: Update debug values before RAUW 2018-07-06 17:32:39 +00:00
lib Revert 336426 (and follow-ups 428, 440), it very likely caused PR38084. 2018-07-06 17:37:24 +00:00
projects
resources
runtimes Support for multiarch runtimes layout 2018-06-28 03:11:52 +00:00
test [llvm-objcopy] Add support for static libraries 2018-07-06 17:51:03 +00:00
tools [llvm-mca] Add HardwareUnit and Context classes. 2018-07-06 18:03:14 +00:00
unittests [Local] replaceAllDbgUsesWith: Update debug values before RAUW 2018-07-06 17:32:39 +00:00
utils [TableGen] Increase the number of supported decoder fix-ups. 2018-07-05 10:39:15 +00:00
.arcconfig
.clang-format
.clang-tidy
.gitattributes
.gitignore
CMakeLists.txt Support for multiarch runtimes layout 2018-06-28 03:11:52 +00:00
CODE_OWNERS.TXT CODE_OWNERS: Take ownership of the MIPS backend 2018-06-21 09:59:44 +00:00
CREDITS.TXT Update my information in the CREDITS file. 2018-06-15 20:02:11 +00:00
LICENSE.TXT Update copyright year to 2018. 2018-06-18 12:22:17 +00:00
LLVMBuild.txt
README.txt Test commit: remove a blank line 2018-06-08 21:21:55 +00:00
RELEASE_TESTERS.TXT Remove myself from the release testers list. (NFC) 2018-06-20 21:25:50 +00:00
configure
llvm.spec.in

README.txt

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