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This option was necessary in early ICC 12 releases because of a
difference in interpreting the ABI requirements with GCC. According to
ICC devs, GCC changed the ABI on its own to require 16-byte-aligned
stacks on i386.
It looks like this option has been the default in later ICC 12
releases. At least 12.1 update 5 has it by default. ICC 13 does not
have the option anymore but accepts it silently for backwards
compatibility.
(cherry-picked from qt5 change 76874dea4449029856a7a1f639b995a9e35c6166)
Change-Id: Id8bb4c250718eef2f02dc97bd47a0efd95b272fc
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@digia.com>
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Conflicts:
demos/declarative/minehunt/minehunt.pro
src/opengl/gl2paintengineex/qtextureglyphcache_gl.cpp
src/plugins/phonon/mmf/mmf.pro
src/s60installs/s60installs.pro
tests/auto/qapplication/test/test.pro
tests/auto/qgraphicsview/tst_qgraphicsview.cpp
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ICC 12 keeps outputting this when you copy a type of larger size to
a smaller, or from int to float.
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Conflicts:
src/gui/painting/qrasterizer.cpp
src/network/access/qnetworkaccessmanager.cpp
tests/auto/qpainter/tst_qpainter.cpp
tools/assistant/tools/assistant/mainwindow.cpp
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After discussing with Intel, turns out that ICC defaults to aligning
the stack when it needs to (e.g., when issuing aligned operations), but
doesn't care otherwise. GCC, on the other hand, expects the stack to
always be aligned and will issue instructions without checking.
We'll probably add __attribute__((force_align_arg_pointer)) to some
functions in our code, but we won't be able to catch everything.
Reviewed-By: Bradley T. Hughes
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Speeds up debugging on platforms with recent gdb.
Task-number: QTCREATORBUG-2215
Reviewed-by: ossi
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GLU is not part of standard OpenGL and is not used internally in Qt,
so we should not depend on it.
Task-number: QT-12227
Reviewed-by: kim
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ICC generates jump table code that isn't PIC (i.e., it does absolute
indirect jumps), so this increases the number of relocations in shared
libraries by a huge amount.
In QtCore it increased by 250% (from 3500 to 12000).
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Reviewed-by: joerg
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the unix makefile generator can make files for "regular" unixes and
macos (the difference being the framework handling). so far, the output
choice was hard-wired to the host platform. the previous commit made
that soft-configurable, and this one exploits this capability to enable
limited cross-building.
Reviewed-by: mariusSO
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