RealView Compilation Tools Compiler Reference Guide - ARM ...

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Compiler-specific Features Note Each ARMv6 SIMD intrinsic is guaranteed to be compiled into a single, inline, machine instruction for an ARM v6 architecture or processor. However, the compiler might use optimized forms of underlying instructions when it detects opportunities to do so. The ARMv6 SIMD instructions can set the GE[3:0] bits in the Application Program Status Register (APSR). The SIMD instructions might update these flags to indicate the “greater than or equal to” status of each 8/16-bit slice of a SIMD operation. The ARM compiler treats the GE[3:0] bits as a global variable. To access these bits from within your C or C++ program, either: • access bits 16-19 of the APSR through a named register variable • use the __sel intrinsic to control a SEL instruction. unsigned int __qadd16(unsigned int, unsigned int) unsigned int __qadd8(unsigned int, unsigned int) unsigned int __qasx(unsigned int, unsigned int) unsigned int __qsax(unsigned int, unsigned int) unsigned int __qsub16(unsigned int, unsigned int) unsigned int __qsub8(unsigned int, unsigned int) unsigned int __sadd16(unsigned int, unsigned int) unsigned int __sadd8(unsigned int, unsigned int) unsigned int __sasx(unsigned int, unsigned int) unsigned int __sel(unsigned int, unsigned int) unsigned int __shadd16(unsigned int, unsigned int) unsigned int __shadd8(unsigned int, unsigned int) unsigned int __shasx(unsigned int, unsigned int) unsigned int __shsax(unsigned int, unsigned int) unsigned int __shsub16(unsigned int, unsigned int) unsigned int __shsub8(unsigned int, unsigned int) unsigned int __smlad(unsigned int, unsigned int, unsigned int) unsigned long long __smlald(unsigned int, unsigned int, unsigned long long) unsigned int __smlsd(unsigned int, unsigned int, unsigned int) unsigned long long __smlsld(unsigned int, unsigned int, unsigned long long) unsigned int __smuad(unsigned int, unsigned int) unsigned int __smusd(unsigned int, unsigned int) unsigned int __ssat16(unsigned int, unsigned int) unsigned int __ssax(unsigned int, unsigned int) unsigned int __ssub16(unsigned int, unsigned int) unsigned int __ssub8(unsigned int, unsigned int) unsigned int __sxtab16(unsigned int, unsigned int) unsigned int __sxtb16(unsigned int, unsigned int) unsigned int __uadd16(unsigned int, unsigned int) unsigned int __uadd8(unsigned int, unsigned int) unsigned int __uasx(unsigned int, unsigned int) unsigned int __uhadd16(unsigned int, unsigned int) unsigned int __uhadd8(unsigned int, unsigned int) 4-96 Copyright © 2007, 2010 ARM Limited. All rights reserved. ARM DUI 0348A Non-Confidential
Compiler-specific Features unsigned int __uhasx(unsigned int, unsigned int) unsigned int __uhsax(unsigned int, unsigned int) unsigned int __uhsub16(unsigned int, unsigned int) unsigned int __uhsub8(unsigned int, unsigned int) unsigned int __uqadd16(unsigned int, unsigned int) unsigned int __uqadd8(unsigned int, unsigned int) unsigned int __uqasx(unsigned int, unsigned int) unsigned int __uqsax(unsigned int, unsigned int) unsigned int __uqsub16(unsigned int, unsigned int) unsigned int __uqsub8(unsigned int, unsigned int) unsigned int __usad8(unsigned int, unsigned int) unsigned int __usada8(unsigned int, unsigned int, unsigned int) unsigned int __usax(unsigned int, unsigned int) unsigned int __usat16(unsigned int, unsigned int) unsigned int __usub16(unsigned int, unsigned int) unsigned int __usub8(unsigned int, unsigned int) unsigned int __uxtab16(unsigned int, unsigned int) unsigned int __uxtb16(unsigned int, unsigned int) See also • Named register variables on page 4-101 • Registers on page 2-6 in the Assembler Guide • SEL on page 4-62 in the Assembler Guide • Chapter 5 NEON and VFP Programming in the Assembler Guide. 4.7.47 ETSI basic operations RVCT supports for the original ETSI family of basic operations described in the ETSI G.729 recommendation Coding of speech at 8 kbit/s using conjugate-structure algebraic-code-excited linear prediction (CS-ACELP). To make use of the ETSI basic operations in your own code, include the standard header file dspfns.h. The intrinsics supplied in dspfns.h are listed in Table 4-13. Table 4-13 ETSI basic operations supported in RVCT Intrinsics abs_s L_add_c L_mult L_sub_c norm_l add L_deposit_h L_negate mac_r round div_s L_deposit_l L_sat msu_r saturate extract_h L_mac L_shl mult shl ARM DUI 0348A Copyright © 2007, 2010 ARM Limited. All rights reserved. 4-97 Non-Confidential
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® RealView Compilation Tools Versi
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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 • ARM datasheet or techni
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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 Defau
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Compiler Command-line Options Note
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Compiler Command-line Options Table
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Compiler Command-line Options int m
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Compiler Command-line Options See a
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Compiler Command-line Options • -
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Compiler Command-line Options • T
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Compiler Command-line Options Where
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Compiler Command-line Options Mode
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Compiler Command-line Options • #
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Compiler Command-line Options Synta
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Compiler Command-line Options When
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Compiler Command-line Options Synta
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Compiler Command-line Options --no_
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Compiler Command-line Options --apc
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Compiler Command-line Options Selec
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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 Example void co
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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 3.6.4 Assembler
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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 3.7.10 Inline T
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Language Extensions Example int bar
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Chapter 4 Compiler-specific Feature
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Compiler-specific Features Usage __
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Compiler-specific Features Example
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Compiler-specific Features 4.1.6 __
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Compiler-specific Features Example
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Compiler-specific Features 4.1.11 _
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Compiler-specific Features short x;
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Compiler-specific Features typedef
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Compiler-specific Features • 0-25
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Compiler-specific Features Usage Fu
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Compiler-specific Features 4.1.20 _
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Compiler-specific Features 4.2.2 __
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Compiler-specific Features 4.3 Func
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Compiler-specific Features The comp
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Compiler-specific Features 4.4 Type
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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 satur
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Using NEON Support Vector add high
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Using NEON Support Vector saturatin
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Using NEON Support uint64x1_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 int64x1_t vld1_l
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Using NEON Support // VST1.16 {d0[0
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Using NEON Support // VLD3.32 {d0,
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Using NEON Support void vst2_u64(__
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Using NEON Support void vst2q_lane_
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Using NEON Support float32_t vget_l
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Using NEON Support uint16x4_t vget_
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Using NEON Support E.3.25 Operation
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Using NEON Support int16x8_t vmulq_
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Using NEON Support Vector widening
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Using NEON Support Absolute: Vd[i]
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Using NEON Support uint8x8_t vmvn_u
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Using NEON Support int16x8_t vornq_
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Using NEON Support uint32x4x2_t vuz
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