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This patch moves away from using M5_ATTR_OVERRIDE and the m5::hashmap
(and similar) abstractions, as these are no longer needed with gcc 4.7
and clang 3.1 as minimum compiler versions.
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Gcc and clang both provide an attribute that can be used to flag a
function as deprecated at compile time. This changeset adds a gem5
compiler macro for that compiler feature. The macro can be used to
indicate that a legacy API within gem5 has been deprecated and provide
a graceful migration to the new API.
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Add the macros M5_ATTR_FINAL and M5_ATTR_OVERRIDE which are defined to
final and override respectively if supported by the compiler. This is
done to allow a smooth transition to gcc >= 4.7.
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The M5_PRAGMA_NORETURN macro was only used in for
__exit_message. Since the macro only holds a stub definition and all
functions with noreturn semantics use the M5_ATTR_NORETURN, this
macros is completely redundant.
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Small fixes to appease recent clang versions.
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This patch checks that the compiler in use is either gcc >= 4.4 or
clang >= 2.9. and enables building with --std=c++0x in all cases. As a
consequence, we can tidy up the hashmap and always have static_assert
available. If anyone wants to use alternative compilers, icc for
example supports c++0x to a similar level and could be added if
needed.
This patch opens up for a more elaborate use of c++0x features that
are present in gcc 4.4 and clang 2.9, e.g. auto typed variables,
variadic templates, rvalues and move semantics, and strongly typed
enums. There will be no going back on this one...
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This patch simply prunes the SUNCC and ICC compiler options as they
are both sufficiently stale that they would have to be re-written from
scratch anyhow. The patch serves to clean things up before shifting to
a build environment that enforces basic c++11 compliance as done in
the following patch.
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C++11 has support for static_asserts to provide compile-time assertion
checking. This is very useful when testing, for example, structure
sizes to make sure that the compiler got the right alignment or vector
sizes.
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--HG--
extra : rebase_source : 1f5e8b7bb6b0a8bb4f951b6d7189964d96ed5df1
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--HG--
extra : convert_revision : 238dcd6da7577b533e52ada2107591c4e9168ebd
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SConstruct:
src/SConscript:
Add flags for Intel CC while i'm at it
src/base/compiler.hh:
the _Pragma stuff needst to be called this way unless someone happens to have a cleaner way
src/base/cprintf_formats.hh:
add std:: where appropriate
src/base/statistics.hh:
use this->map since icc was getting confused about std::map vs the locally defined map
src/cpu/static_inst.hh:
Add some more dummy returns where needed
src/mem/packet.hh:
add more dummy returns where needed
src/sim/host.hh:
use limits to come up with max tick
--HG--
extra : convert_revision : 08e9f7898b29fb9d063136529afb9b6abceab60c
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--HG--
extra : convert_revision : 4b570a33a951e9286b38873b2be3651ffaee8532
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