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code
In gcc PowerPC, long double has 3 mangling schemes:
-mlong-double-64: `e`
-mlong-double-128 -mabi=ibmlongdouble: `g`
-mlong-double-128 -mabi=ieeelongdouble: `u9__ieee128` (gcc <= 8.1: `U10__float128`)
The current useFloat128ManglingForLongDouble() bisection is not suitable
when we support -mlong-double-128 in clang (D64277). Replace
useFloat128ManglingForLongDouble() with getLongDoubleMangling() and
getFloat128Mangling() to allow 3 mangling schemes.
I also deleted the `getTriple().isOSBinFormatELF()` check (the Darwin
support has gone: https://reviews.llvm.org/D50988).
For x86, change the mangled code of __float128 from `U10__float128` to `g`. `U10__float128` was wrongly copied from PowerPC.
The test will be added to `test/CodeGen/x86-long-double.cpp` in D64277.
Reviewed By: erichkeane
Differential Revision: https://reviews.llvm.org/D64276
llvm-svn: 365480
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This patch addresses a compilation error with clang when
running in Haiku being unable to compile code using
float128 (throws compilation error such as 'float128 is
not supported on this target').
Patch by kallisti5 (Alexander von Gluck IV)
Differential Revision: https://reviews.llvm.org/D54901
llvm-svn: 348368
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As of rev. 268898, clang supports __float128 on SystemZ. This seems to
have been in error. GCC has never supported __float128 on SystemZ,
since the "long double" type on the platform is already IEEE-128. (GCC
only supports __float128 on platforms where "long double" is some other
data type.)
For compatibility reasons this patch removes __float128 on SystemZ
again. The test case is updated accordingly.
llvm-svn: 348247
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Summary: The name of the synthesized constants for constant initialization was using mangling for statics, which isn't generally correct and (in a yet-uncommitted patch) causes the mangler to assert out because the static ends up trying to mangle function parameters and this makes no sense. Instead, mangle to `"__const." + FunctionName + "." + DeclName`.
Reviewers: rjmccall
Subscribers: dexonsmith, cfe-commits
Differential Revision: https://reviews.llvm.org/D54055
llvm-svn: 346915
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This reverts commit https://reviews.llvm.org/rL344150 which causes
MachineOutliner related failures on the ppc64le multistage buildbot.
llvm-svn: 344526
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This is currently a clang extension and a resolution
of the defect report in the C++ Standard.
Differential Revision: https://reviews.llvm.org/D46441
llvm-svn: 344150
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When rebasing https://reviews.llvm.org/D40898 with GCC 5.4 on Solaris 11.4, I ran
into a few instances of
In file included from /vol/llvm/src/compiler-rt/local/test/asan/TestCases/Posix/asan-symbolize-sanity-test.cc:19:
In file included from /usr/gcc/5/lib/gcc/x86_64-pc-solaris2.11/5.4.0/../../../../include/c++/5.4.0/string:40:
In file included from /usr/gcc/5/lib/gcc/x86_64-pc-solaris2.11/5.4.0/../../../../include/c++/5.4.0/bits/char_traits.h:39:
In file included from /usr/gcc/5/lib/gcc/x86_64-pc-solaris2.11/5.4.0/../../../../include/c++/5.4.0/bits/stl_algobase.h:64:
In file included from /usr/gcc/5/lib/gcc/x86_64-pc-solaris2.11/5.4.0/../../../../include/c++/5.4.0/bits/stl_pair.h:59:
In file included from /usr/gcc/5/lib/gcc/x86_64-pc-solaris2.11/5.4.0/../../../../include/c++/5.4.0/bits/move.h:57:
/usr/gcc/5/lib/gcc/x86_64-pc-solaris2.11/5.4.0/../../../../include/c++/5.4.0/type_traits:311:39: error: __float128 is not supported on this target
struct __is_floating_point_helper<__float128>
^
during make check-all. The line above is inside
#if !defined(__STRICT_ANSI__) && defined(_GLIBCXX_USE_FLOAT128)
template<>
struct __is_floating_point_helper<__float128>
: public true_type { };
#endif
While the libstdc++ header indicates support for __float128, clang does not, but
should. The following patch implements this and fixed those errors.
Differential Revision: https://reviews.llvm.org/D41240
llvm-svn: 330572
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/usr/local/include/c++/4.9.4/type_traits:279:39: error: __float128 is not
supported on this target
llvm-svn: 295635
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This patch corresponds to reviews:
http://reviews.llvm.org/D15120
http://reviews.llvm.org/D19125
It adds support for the __float128 keyword, literals and target feature to
enable it. Based on the latter of the two aforementioned reviews, this feature
is enabled on Linux on i386/X86 as well as SystemZ.
This is also the second attempt in commiting this feature. The first attempt
did not enable it on required platforms which caused failures when compiling
type_traits with -std=gnu++11.
If you see failures with compiling this header on your platform after this
commit, it is likely that your platform needs to have this feature enabled.
llvm-svn: 268898
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Since this patch provided support for the __float128 type but disabled it
on all platforms by default, some platforms can't compile type_traits with
-std=gnu++11 since there is a specialization with __float128.
This reverts the patch until D19125 is approved (i.e. we know which platforms
need this support enabled).
llvm-svn: 266460
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This patch corresponds to review:
http://reviews.llvm.org/D15120
It adds support for the __float128 keyword, literals and a target feature to
enable it. This support is disabled by default on all targets and any target
that has support for this type is free to add it.
Based on feedback that I've received from target maintainers, this appears to
be the right thing for most targets. I have not heard from the maintainers of
X86 which I believe supports this type. I will subsequently investigate the
impact of enabling this on X86.
llvm-svn: 266186
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