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Compiler-specific Features 4.7.45 ARMv6 SIMD intrinsics according to prefix Table 4-15 ARMv6 SIMD instruction intrinsics grouped by prefix Intrinsic classification __s a __q b __sh c __u d __uq e __uh f Byte addition __sadd8 __qadd8 __shadd8 __usadd8 __uqadd8 __uhadd8 Byte subtraction __ssub8 __qsub8 __shsub8 __usub8 __uqsub8 __uhsub8 Halfword addition __sadd16 __qadd16 __shadd16 __uadd16 __uqadd16 __uhadd16 Halfword subtraction __ssub16 __qsub16 __shsub16 __usub16 __uqsub16 __uhsub16 Exchange halfwords within one operand, add high halfwords, subtract low halfwords Exchange halfwords within one operand, subtract high halfwords, add low halfwords __sasx __qasx __shasx __uasx __uqasx __uhasx __ssax __qsax __shsax __usax __uqsax __uhsax Unsigned sum of absolute difference - - - __usad8 - - Unsigned sum of absolute difference and accumulate - - - __usada8 - - Signed saturation to selected width __ssat16 - - - - - Extract values (bit positions [23:16][7:0]), zero-extend to 16 bits Extract values (bit positions [23:16][7:0]) from second operand, zero-extend to 16 bits, add to first operand - - - __uxtb16 - - - - - __uxtab16 - - Sign-extend __sxtb16 - - - - - Sign-extend, add __sxtab16 - - - - - Signed multiply, add products __smuad - - - - - Signed multiply, subtract products __smusd - - - - - Exchange halfwords of one operand, signed multiply, subtract products Signed multiply, add both results to another operand __smusdx - - - - - __smlad - - - - - 4-110 Copyright © 2007-2010 ARM. All rights reserved. ARM DUI 0348C Non-Confidential, ID101213
Compiler-specific Features Table 4-15 (continued) ARMv6 SIMD instruction intrinsics grouped by prefix Intrinsic classification __s a __q b __sh c __u d __uq e __uh f Exchange halfwords of one operand, perform 2x16-bit multiplication, add both results to another operand Perform 2x16-bit multiplication, add both results to another operand Exchange halfwords of one operand, perform 2x16-bit multiplication, add both results to another operand Exchange halfwords of one operand, perform two signed 16-bit multiplications, add difference of products to a 32-bit accumulate operand. __smladx - - - - - __smlald - - - - - __smlaldx - - - - - __smlsdx - - - - - a. Signed b. Signed saturating c. Signed halving d. Unsigned e. Unsigned saturating f. Unsigned halving. ARM DUI 0348C Copyright © 2007-2010 ARM. All rights reserved. 4-111 ID101213 Non-Confidential,
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® RealView Compilation Tools Versi
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Product Status The information in t
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Contents RealView Compilation Tools
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Preface This preface introduces the
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Preface Appendix A Via File Syntax
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Preface Other publications The foll
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Chapter 1 Introduction This chapter
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Introduction 1.2 Source language mo
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Introduction 1.3 Language extension
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Introduction • Compiling a C sour
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Chapter 2 Compiler Command-line Opt
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Compiler Command-line Options 2.1.2
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Compiler Command-line Options Each
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Compiler Command-line Options Note
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Compiler Command-line Options • -
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Compiler Command-line Options Restr
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Compiler Command-line Options Defau
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Compiler Command-line Options Examp
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Compiler Command-line Options • a
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Compiler Command-line Options Synta
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Compiler Command-line Options • I
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Compiler Command-line Options See a
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Compiler Command-line Options Compi
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Compiler Command-line Options Selec
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Compiler Command-line Options • R
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Compiler Command-line Options Usage
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Compiler Command-line Options A num
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Compiler Command-line Options vfpv3
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Compiler Command-line Options The c
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Compiler Command-line Options The c
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Compiler Command-line Options #incl
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Compiler Command-line Options Error
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Compiler Command-line Options • a
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Compiler Command-line Options and a
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Compiler Command-line Options Error
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Chapter 3 Language Extensions This
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Language Extensions 3.1.2 #include_
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Language Extensions 3.2 C99 languag
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Language Extensions 3.3 C99 languag
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Language Extensions Restrictions Th
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Language Extensions static int y =
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Language Extensions 3.4.4 Dollar si
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Language Extensions 3.5 Standard C+
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Language Extensions Example 3-2 Lin
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Language Extensions 3.6 Standard C
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Language Extensions int counter __a
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Language Extensions 3.6.12 Structur
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Language Extensions 3.7 GNU languag
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Language Extensions 3.7.5 Character
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Language Extensions • You can use
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Language Extensions Errors The comp
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Chapter 4 Compiler-specific Feature
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Compiler-specific Features Usage __
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Compiler-specific Features Return v
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Compiler-specific Features Example
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Compiler-specific Features The func
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Compiler-specific Features Note The
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Compiler-specific Features Usage Th
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Compiler-specific Features Syntax _
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Compiler-specific Features See also
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Compiler-specific Features __weak v
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Compiler-specific Features When a c
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Compiler-specific Features Examples
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Compiler-specific Features Usage If
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Compiler-specific Features 4.3 Func
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Compiler-specific Features 4.3.2 __
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Compiler-specific Features Note Thi
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Compiler-specific Features 4.3.11 _
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Compiler-specific Features 4.4 Type
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Compiler-specific Features • Bit-
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Compiler-specific Features 4.5 Vari
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Compiler-specific Features In parti
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Compiler-specific Features 4.5.5 __
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Compiler-specific Features Note You
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Compiler-specific Features 4.7.100
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Compiler-specific Features } int32_
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Compiler-specific Features 4.8 VFP
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Compiler-specific Features Table 4-
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Compiler-specific Features 4.10 GNU
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Compiler-specific Features __builti
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Chapter 5 C and C++ Implementation
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C and C++ Implementation Details th
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C and C++ Implementation Details Se
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C and C++ Implementation Details Po
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C and C++ Implementation Details
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C and C++ Implementation Details 5.
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C and C++ Implementation Details No
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C and C++ Implementation Details na
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C and C++ Implementation Details 5.
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Appendix A Via File Syntax This app
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Via File Syntax A.2 Syntax Via file
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Appendix B Standard C Implementatio
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Standard C Implementation Definitio
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Appendix C Standard C++ Implementat
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Standard C++ Implementation Definit
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Standard C++ Implementation Definit
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Appendix D C and C++ Compiler Imple
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C and C++ Compiler Implementation L
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C and C++ Compiler Implementation L
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Appendix E Using NEON Support This
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Using NEON Support E.2 Vector data
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Using NEON Support • Vector long
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Using NEON Support uint64x1_t vqadd
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Using NEON Support Vector multiply
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Using NEON Support int64x1_t vqsub_
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Using NEON Support uint32x2_t vcle_
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Using NEON Support uint16x4_t vabd_
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Using NEON Support Long pairwise ad
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Using NEON Support int16x8_t vqshlq
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Using NEON Support uint8x8_t vrshr_
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Using NEON Support Vector signed->u
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Using NEON Support uint8x16_t vld1q
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Using NEON Support int16x4_t lane);
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Using NEON Support // VST1.8 {d0},
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Using NEON Support uint64x1x2_t vld
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Using NEON Support float32x2x4_t vl
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Using NEON Support lane); // VLD2.8
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Using NEON Support // VLD4.16 {d0[0
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Using NEON Support // VST3.32 {d0,
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Using NEON Support // VST3.32 {d0[0
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Using NEON Support uint8x8_t vset_l
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Using NEON Support float32x2_t vmov
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Using NEON Support uint32x2_t vcvt_
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Using NEON Support // VMLA.I16 d0,
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Using NEON Support Vector long mult
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Using NEON Support Vector widening
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Using NEON Support int8x16_t vqabsq
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Using NEON Support Bitwise and int8
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Using NEON Support Bitwise Select N
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Using NEON Support E.3.31 Vector re
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