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Introduction GNU extensions The compiler supports some extensions offered by the GNU compiler, for example, GNU-style extended lvalues and GNU builtin functions. For more information see: • Language compliance • GNU language extensions on page 3-25 • Chapter 4 Compiler-specific Features. 1.3.2 Language compliance ARM-specific extensions The compiler supports a range of extensions specific to the ARM compiler, for example, instruction intrinsics and other builtin functions. See Chapter 4 Compiler-specific Features for more information. The compiler has several modes where compliance to a source language is either enforced or relaxed: Strict mode In strict mode the compiler enforces compliance with the language standard relevant to the source language. For example, the use of //-style comments results in an error when compiling strict C90. To compile in strict mode, use the command-line option --strict. GNU mode In GNU mode all the GNU compiler extensions to the relevant source language are available. For example, in GNU mode: • case ranges in switch statements are available when the source language is any of C90, C99 or nonstrict C++ • C99-style designated initializers are available when the source language is either C90 or nonstrict C++. To compile in GNU mode, use the compiler option --gnu. Note Some GNU extensions are also available when you are in a nonstrict mode. Example The following examples illustrate combining source language modes with language compliance modes: • Compiling a .cpp file with the command-line option --strict compiles Standard C++ 1-6 Copyright © 2007-2010 ARM. All rights reserved. ARM DUI 0348C Non-Confidential, ID101213
Introduction • Compiling a C source file with the command-line option --gnu compiles GNU mode C90 • Compiling a .c file with the command-line options --strict and --gnu is an error. See also • --gnu on page 2-67 • --strict, --no_strict on page 2-119 • GNU language extensions on page 3-25 • File naming conventions on page 2-12 in the Compiler User Guide. ARM DUI 0348C Copyright © 2007-2010 ARM. All rights reserved. 1-7 ID101213 Non-Confidential,
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Page 5 and 6: Contents RealView Compilation Tools
Page 7 and 8: Preface This preface introduces the
Page 9 and 10: Preface Appendix A Via File Syntax
Page 11 and 12: Preface Other publications The foll
Page 13 and 14: Chapter 1 Introduction This chapter
Page 15 and 16: Introduction 1.2 Source language mo
Page 17: Introduction 1.3 Language extension
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Page 23 and 24: Compiler Command-line Options 2.1.2
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Page 27 and 28: Compiler Command-line Options Note
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Compiler Command-line Options Note
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Compiler Command-line Options • R
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Compiler Command-line Options 2.1.6
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Compiler Command-line Options Defau
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Compiler Command-line Options Usage
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Compiler Command-line Options See a
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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 Restr
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Compiler Command-line Options • -
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Compiler Command-line Options The c
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Compiler Command-line Options Examp
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Compiler Command-line Options The c
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Compiler Command-line Options Note
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Compiler Command-line Options Synta
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Compiler Command-line Options #incl
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Compiler Command-line Options Restr
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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 The i
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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 Default
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Compiler-specific Features • Chap
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Compiler-specific Features Where: t
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Compiler-specific Features This pra
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Compiler-specific Features • __at
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Compiler-specific Features Note Bot
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Compiler-specific Features 4.7 Inst
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Compiler-specific Features opcode2
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Compiler-specific Features Syntax v
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Compiler-specific Features Where: p
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Compiler-specific Features Errors T
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Compiler-specific Features Syntax v
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Compiler-specific Features Restrict
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Compiler-specific Features Errors T
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Compiler-specific Features ptr poin
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Compiler-specific Features 4.7.44 A
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Compiler-specific Features Table 4-
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Compiler-specific Features 4.7.47 A
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Compiler-specific Features • __uh
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Compiler-specific Features • Para
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Compiler-specific Features • Para
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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 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 st
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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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