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336:(based on platform specific compiler flags), providing fully portable high-level primitives (e.g., a four-element floating-point vector type) mapped onto the appropriate
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309:. To compensate for this, new intrinsics have been added that map to standard assembly instructions that are not normally accessible through C/C++, e.g., bit scan.
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implementations, while still benefiting from the C++ type system and inlining; hence the advantage over linking to hand-written assembly object files, using the C
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also has intrinsics for specific Java APIs. Hotspot intrinsics are standard Java APIs which may have one or more optimized implementation on some platforms.
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built-ins) are slightly more abstracted, approximating the abilities of several contemporary platforms, with portable
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A builtin function is identified by leaving its name undeclared and allowing it to default, or by declaring it
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Individual compilers have added additional builtins specific to a machine architecture or operating system.
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implementations on platforms with no appropriate instructions. It is common for C++ libraries, such as
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Some C and C++ compilers provide non-portable platform-specific intrinsics. Other intrinsics (such as
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Compilers that implement intrinsic functions may enable them only when a program requests
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837:"Sony open sources Vector Math and SIMD math libraries (Cell PPU/SPU/other platforms)"
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566:. A user-supplied function of the same name can be substituted by declaring it as
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defines nearly 90 builtin functions. These are conventionally grouped as follows:
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This article is about compiler intrinsic functions. For X toolkit, see
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Function whose implementation is handled specially by the compiler
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Storage
Control builtin functions, for example ADDR, POINTER
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Array-handling builtin functions, for example ANY, ALL, PROD
672:"Built-in Functions Specific to Particular Target Machines"
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Intrinsic functions are often used to explicitly implement
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590:"Intel® C++ Compiler 19.1 Developer Guide and Reference"
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Condition-handling builtin functions like ONCODE, ONFILE
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in languages which do not address such constructs. Some
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String-handling builtin functions such as INDEX, LENGTH
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Mathematical builtin functions like SIN, COS, LOG, ERF
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Arithmetic builtin functions such as ABS, CEIL, ROUND
900:
American
National Standard programming language PL/I
495:// calculates a*b + c for three vectors of 16 floats
240:(GCC) implement intrinsics that map directly to the
56:. Unsourced material may be challenged and removed.
555:Miscellaneous builtin functions like DATE and TIME
152:whose implementation is handled specially by the
456:// calculates a + b for two vectors of 16 floats
426:// 64 bit * 64 bit => 128 bit multiplication
160:for the original function call, similar to an
8:
929:IBM PL/I for MVS & VM Language Reference
912:: CS1 maint: numeric names: authors list (
116:Learn how and when to remove this message
817:Using the GNU Compiler Collection (GCC)
578:
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7:
363:// return internal CPU clock counter
54:adding citations to reliable sources
193:application programming interfaces
14:
878:"Intrinsic Methods in HotSpot VM"
594:Intel® C++ Compiler Documentation
245:single instruction, multiple data
179:Vectorization and parallelization
952:, IBM AIX 6.1 documentation
789:"Intrinsics and Inline Assembly"
761:"Intrinsics and Inline Assembly"
733:"Intrinsics and Inline Assembly"
700:"Intrinsics and Inline Assembly"
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236:, of Microsoft, Intel, and the
148:) available for use in a given
41:needs additional citations for
876:Mok, Kris (25 February 2013).
338:low level programming language
1:
552:Input-Output builtins: LINENO
332:, to achieve portability via
342:application binary interface
616:"Clang Language Extensions"
211:appropriate for the target
987:
898:ANSI X3 Committee (1976).
18:
384:// count of bits set in n
258:Streaming SIMD Extensions
132:, in compiler theory, an
927:IBM Corporation (1995).
676:Free Software Foundation
351:
301:does not support inline
950:Using milicode routines
614:The Clang Team (2020).
334:conditional compilation
299:Microsoft Visual Studio
238:GNU Compiler Collection
219:By programming language
945:Intel Intrinsics Guide
620:Clang 11 documentation
330:vector maths libraries
966:Compiler construction
647:"Compiler Intrinsics"
516:just-in-time compiler
971:Computer programming
512:Java virtual machine
295:Microsoft Visual C++
195:(API), for example,
150:programming language
65:"Intrinsic function"
50:improve this article
21:X Toolkit Intrinsics
813:"Vector Extensions"
670:GCC documentation.
596:. 16 December 2019
134:intrinsic function
630:Builtin Functions
144:, is a function (
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939:External links
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847:on 2016-06-24
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106:December 2009
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67: –
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61:Find sources:
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39:This article
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882:. Retrieved
880:. Slideshare
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849:. Retrieved
845:the original
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820:. Retrieved
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796:. Retrieved
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740:. Retrieved
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712:. Retrieved
708:the original
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598:. Retrieved
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297:compiler of
293:, ...). The
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169:optimization
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158:instructions
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48:Please help
43:verification
40:
420:HighProduct
209:object code
960:Categories
884:2014-12-20
851:2020-01-17
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798:2011-09-28
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681:2012-06-20
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625:2020-01-17
600:2020-01-17
574:References
369:__popcnt64
146:subroutine
76:newspapers
908:cite book
793:Microsoft
765:Microsoft
737:Microsoft
704:Microsoft
651:Microsoft
526:ANSI/ISO
514:'s (JVM)
318:fall back
224:C and C++
414:uint64_t
405:uint64_t
396:uint64_t
390:_umul128
387:uint64_t
375:uint64_t
366:uint64_t
354:uint64_t
348:Examples
303:assembly
213:platform
154:compiler
564:BUILTIN
509:HotSpot
408:Factor2
399:Factor1
357:__rdtsc
344:(ABI).
261:(SSE),
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90:scholar
486:__m512
477:__m512
468:__m512
459:__m512
447:__m512
438:__m512
429:__m512
307:x86-64
287:AVX512
201:OpenMP
92:
85:
78:
71:
63:
568:ENTRY
271:SSSE3
97:JSTOR
83:books
914:link
785:MSDN
757:MSDN
729:MSDN
696:MSDN
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528:PL/I
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507:The
503:Java
326:Sony
305:for
283:AVX2
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232:and
199:and
187:and
69:news
360:();
328:'s
324:or
322:glm
314:GNU
291:FMA
279:AVX
253:MMX
242:x86
234:C++
140:or
128:In
52:by
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