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Compiler-specific Features Table 4-21 TI C55x intrinsics supported in RVCT (continued) Intrinsics _lmin _lssub _shl _sshl _lnorm _max _shrs _ssub _lshl _min _smac Example #include #include #include // include TI C55x intrinsics __asm int32_t asm_lsadd(int32_t a, int32_t b) { qadd r0, r0, r1 bx lr} int32_t foo(int32_t a, int32_t b) { int32_t c, d, e; c = asm_lsadd(a, b); // assembly language saturating add d = __qadd(a, b); // ARM intrinsic saturating add e = _lsadd(a, b); // TI C55x saturating add return c == d == e; // returns 1 } See also • the header file c55x.h for more information on the ARM implementation of the C55x intrinsics • Publications providing information about TI compiler intrinsics are available from Texas Instruments at http://www.ti.com. 4-190 Copyright © 2007-2010 ARM. All rights reserved. ARM DUI 0348C Non-Confidential, ID101213
Compiler-specific Features 4.8 VFP status intrinsic The compiler provides an intrinsic for reading the Floating Point and Status Control Register (FPSCR). Note It is preferable to use a named register variable as an alternative method of reading this register. This provides a more efficient method of access. See Named register variables on page 4-192. 4.8.1 __vfp_status This intrinsic reads the FPSCR. Syntax unsigned int __vfp_status(unsigned int mask, unsigned int flags); Errors The compiler generates an error if you attempt to use this intrinsic when compiling for a target that does not have VFP. See also • the ARM Architecture Reference Manual for information about the FPSCR register. ARM DUI 0348C Copyright © 2007-2010 ARM. All rights reserved. 4-191 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 Synta
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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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Chapter 3 Language Extensions This
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Language Extensions 3.1.2 #include_
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Language Extensions static int y =
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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 __weak v
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Compiler-specific Features Examples
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Compiler-specific Features 4.3 Func
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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 Default
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Compiler-specific Features 4.7 Inst
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Compiler-specific Features 4.7.44 A
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Compiler-specific Features Table 4-
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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 lane); // VLD2.8
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