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These defaults are never used. There was an assert in the predictors until recently which was asserting that one of the arguments didn't have the default value, I think to verify that the default wasn't used by accident(?), but it could be used purposefully. That would cause gem5 to crash and has been removed. Beyond that, there's no reason to have default values for those arguments in the first place, so this change removes them. That makes the code slightly simpler, and avoids them being used by accident. Additionally, the defalt values of the arguments made the function signatures inconsistent, even though they were supposed to override each other. JIRA: https://gem5.atlassian.net/browse/GEM5-483 Change-Id: I28f8d2048985c12ec9cac018a868a32bfa20dc6c Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/30375 Reviewed-by: Hsuan Hsu <hsuan.hsu@mediatek.com> Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com> Maintainer: Gabe Black <gabeblack@google.com> Maintainer: Andreas Sandberg <andreas.sandberg@arm.com> Tested-by: kokoro <noreply+kokoro@google.com>
This is the gem5 simulator. The main website can be found at http://www.gem5.org A good starting point is http://www.gem5.org/about, and for more information about building the simulator and getting started please see http://www.gem5.org/documentation and http://www.gem5.org/documentation/learning_gem5/introduction. To build gem5, you will need the following software: g++ or clang, Python (gem5 links in the Python interpreter), SCons, SWIG, zlib, m4, and lastly protobuf if you want trace capture and playback support. Please see http://www.gem5.org/documentation/general_docs/building for more details concerning the minimum versions of the aforementioned tools. Once you have all dependencies resolved, type 'scons build/<ARCH>/gem5.opt' where ARCH is one of ARM, NULL, MIPS, POWER, SPARC, or X86. This will build an optimized version of the gem5 binary (gem5.opt) for the the specified architecture. See http://www.gem5.org/documentation/general_docs/building for more details and options. The basic source release includes these subdirectories: - configs: example simulation configuration scripts - ext: less-common external packages needed to build gem5 - src: source code of the gem5 simulator - system: source for some optional system software for simulated systems - tests: regression tests - util: useful utility programs and files To run full-system simulations, you will need compiled system firmware (console and PALcode for Alpha), kernel binaries and one or more disk images. If you have questions, please send mail to gem5-users@gem5.org Enjoy using gem5 and please share your modifications and extensions.