search for: __int128

Compile the following functions with "-O3 -target amd64" (see <https://godbolt.org/z/5xqYhH>): __int128 div(__int128 foo, __int128 bar) { return foo / bar; } On the left the generated code; on the right the expected, properly optimised code: div: # @div push rbp | mov rbp, rsp | call __divti3 | jmp __divti3 pop rbp | ret | __i...

Hi Team, I observer that division of __int128 bit is very heavy operation. It internally call a routine '__udivti3', which internally call ' __udivmodti4'. Due to it the overall performance is much much slower (almost 15 time slower than if I do it via a combination of 64-bit or microsoft '_udiv128'). Also what to kno...

...ave stdint.h */ typedef unsigned __int64 uint64_t; typedef unsigned __int32 uint32_t; typedef unsigned __int16 uint16_t; typedef unsigned __int8 uint8_t; typedef __int64 int64_t; typedef __int32 int32_t; typedef __int16 int16_t; typedef __int8 int8_t; #if defined(_M_IX64) typedef unsigned __int128 uint128_t; typedef __int128 int128_t; #endif

...using this binary clang I get essentially two different errors: 1) In file included from /home/fceldiener/vcs/llvm/include/llvm/Support/SwapByteOrder.h:20: /usr/bin/../lib/gcc/x86_64-redhat-linux/4.7.2/../../../../include/c++/4.7.2/limits:1404:27: error: use of undeclared identifier '__int128'; did you mean '__int128_t'? struct numeric_limits<__int128> ^ /usr/bin/../lib/gcc/x86_64-redhat-linux/4.7.2/../../../../include/c++/4.7.2/limits:1478:36: error: expected '>' struct numeric_limits<unsigned __int128>...

...m(std::basic_ostream<CharT, Traits>& os, const CharT* fmt, const file_time<Duration>& t) { using namespace std::chrono; const std::string abbrev("UTC"); constexpr std::chrono::seconds offset{0}; using D128 = duration<__int128, typename Duration::period>; return date::to_stream(os, fmt, file_clock::to_local(time_point_cast<D128>(t)), &abbrev, &offset); } template <class Duration, class CharT, class Traits, class Alloc = std::allocator<CharT>>...

...ontains some declarations which were not there before. Using "clang -Xclang -ast-dump” on a c++ file, I get the following result: TranslationUnitDecl 0x8e41ab0 <<invalid sloc>> <invalid sloc> |-TypedefDecl 0x8e41fe8 <<invalid sloc>> <invalid sloc> implicit __int128_t '__int128' | `-BuiltinType 0x8e41d00 '__int128' |-TypedefDecl 0x8e42048 <<invalid sloc>> <invalid sloc> implicit __uint128_t 'unsigned __int128' | `-BuiltinType 0x8e41d20 'unsigned __int128' |-TypedefDecl 0x8e42378 <<invalid sloc>> &lt...

...> __int64 uint64_t; typedef unsigned __int32 uint32_t; typedef >> unsigned __int16 uint16_t; typedef unsigned __int8 uint8_t; >> typedef __int64 int64_t; typedef __int32 int32_t; typedef __int16 >> int16_t; typedef __int8 int8_t; #if defined(_M_IX64) typedef >> unsigned __int128 uint128_t; typedef __int128 int128_t; #endif > > Also, I agree with the consensus that developers have to #include > such a file before using including FLAC/all.h This is because many > Windows developers (such as myself) are likely to already have a > stdint.h replacement defined s...

...t; >> What is very valuable for this implementation is access to MUL >> instruction on x86 which provides full 64 x 64 -> 128 bit multiplication. >> An equally useful on ARM would be UMULH instruction. >> >> Well, the way you can access this on clang / GCC is to use __int128 type >> or use inline assembly. MSVC provides an intrinsic for this instruction. >> This defeats the idea of portable int128 reimplementation and makes >> constexpr implementation of multiplication at least inconvenient. >> >> Maybe there is a hope for me in LLVM. Is t...

.../vmkit.llvm.org/get_started.html but all I get is -- snip -- In file included from /home/birdspider/vmkit-test/llvm/include/llvm/Support/SwapByteOrder.h:20: /usr/bin/../lib/gcc/x86_64-unknown-linux-gnu/4.7.0/../../../../include/c++/4.7.0/limits:1404:27: error: use of undeclared identifier '__int128'; did you mean '__int128_t'? struct numeric_limits<__int128> ^ /usr/bin/../lib/gcc/x86_64-unknown-linux-gnu/4.7.0/../../../../include/c++/4.7.0/limits:1478:36: error: expected '>' struct numeric_limits<unsigned __int128>...

Hi there, Let's have this C code: unsigned long div(unsigned __int128 n, unsigned long d) { return n / d; } I would assume that the divq is the perfect match here. But the compiler generates the code that calls the __udivti3 procedure which performs 128-bit by 128-bit division. Why is divq not used here? - Paweł -------------- next part -------------- An HTML atta...

Edward Diener <eldlistmailingz at tropicsoft.com> writes: >> Clang will attempt to use your installed system libraries, usually >> libstdc++ and glibc on a Linux distribution. We could probably maintain >> a libstdc++ compatibility table that says clang x.y is compatible with >> libstdc++ up to z.w. In the vast majority of cases, this just works if >> you

...I try to write a portable version of int128. What is very valuable for this implementation is access to MUL instruction on x86 which provides full 64 x 64 -> 128 bit multiplication. An equally useful on ARM would be UMULH instruction. Well, the way you can access this on clang / GCC is to use __int128 type or use inline assembly. MSVC provides an intrinsic for this instruction. This defeats the idea of portable int128 reimplementation and makes constexpr implementation of multiplication at least inconvenient. Maybe there is a hope for me in LLVM. Is there any pattern matcher that is producing M...

...th a greater alignment? In this case Align is 8 and OrigAlign is 16 because SVT.getTypeForMVT() is Type::VectorTyID (<2 x i64>) which has an ABI type of VECTOR_ALIGN. Hmm...why is the ABI alignment for VectorTyID 16? The ABI certainly doesn't guarantee it. It only guarantees it for __int128, __float128 and __m128. Lots of other types can map to <2 x i64>. Any opinions on this? -Dave

...t64_t; > typedef unsigned __int32 uint32_t; > typedef unsigned __int16 uint16_t; > typedef unsigned __int8 uint8_t; > typedef __int64 int64_t; > typedef __int32 int32_t; > typedef __int16 int16_t; > typedef __int8 int8_t; > #if defined(_M_IX64) > typedef unsigned __int128 uint128_t; > typedef __int128 int128_t; > #endif Also, I agree with the consensus that developers have to #include such a file before using including FLAC/all.h This is because many Windows developers (such as myself) are likely to already have a stdint.h replacement defined somewhere in th...

On 1/6/2013 9:47 AM, Justin Holewinski wrote: > On Sat, Jan 5, 2013 at 11:08 PM, Edward Diener > <eldlistmailingz at tropicsoft.com <mailto:eldlistmailingz at tropicsoft.com>> > wrote: > > On 1/5/2013 8:01 PM, Justin Holewinski wrote: > > > On Sat, Jan 5, 2013 at 5:59 PM, Edward Diener > <eldlistmailingz at tropicsoft.__com >

Hi All, I recently committed <filesystem> to trunk. I wanted to bring attention to some quirks it currently has. First, it's been put in a separate library, libc++fs, for now. Users are responsible for linking the library when they use filesystem. Second, it should still not be considered ABI stable. Vendors should be aware of this before shipping it. Hopefully all the standard and

On Mon, Nov 30, 2015 at 7:24 PM Gao, Yunzhong < yunzhong_gao at playstation.sony.com> wrote: > According to > http://refspecs.linuxfoundation.org/ELF/ppc64/PPC-elf64abi.html, > "The high-order double-precision value (the one that comes first in > storage) must have the larger magnitude." > > So the order of the two doubles in your fp128 is not affected by the

...col:8 M1 undefined | `-MacroDecl 0x11c03a0 <line:5:9> col:9 M1 defined `-MacroDecl 0x11c03f8 <mainfile.c:3:9> col:9 M2 defined TranslationUnitDecl 0xd6c078 <<invalid sloc>> <invalid sloc> |-TypedefDecl 0xd6c330 <<invalid sloc>> <invalid sloc> implicit __int128_t '__int128' |-TypedefDecl 0xd6c370 <<invalid sloc>> <invalid sloc> implicit __uint128_t 'unsigned __int128' |-TypedefDecl 0xd6c3c8 <<invalid sloc>> <invalid sloc> implicit __builtin_ms_va_list 'char *' `-TypedefDecl 0xd6c590 <<inval...

...g it to handle more than two level loop nests > Improved Loop Unroll to be able to unroll more loops > Implemented an option to allow loop fusion to work on loops with different constant trip counts > > Codegen: > > POWER10 support > > Added PC Relative addressing > Added __int128 vector bool support > > Security enhancement via probe-stack attribute support to protect against stack clash > Floating point support enhancements > > Improved half precision and quad precision support, including GLIBC > constrained FP operation support for arithmetic/rounding/ma...

..._main /sw/src/fink.build/llvm32-3.2-0/llvm-3.2/projects/compiler-unsigned short restrict/lib/asan/lit_tests/strncpy-overflow.cc:23:0 #4 0x7fff8bd827e0 in start (in libdyld.dylib) + 0 Shadow byte and word: 0x100021241609: 1 0x100021241608: 00 01 fb fb fb fb fb fb long double restrictunsigned __int128::* shadow bytes: 0x1000212415e8: fa fa fa fa fa fa fa fa 0x1000212415f0: fa fa fa fa fa fa fa fa 0x1000212415f8: 06 fb fb fb fb fb fb fb 0x100021241600: fa fa fa fa fa fa fa fa =>0x100021241608: 00 01 fb fb fb fb fb fb 0x100021241610: fa fa fa fa fa fa fa fa 0x100021241618: fa fa fa...