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Compiler Command-line Options See also • --depend_system_headers, --no_depend_system_headers on page 2-42 • -M on page 2-88. 2.1.114 --multibyte_chars, --no_multibyte_chars This option enables or disables processing for multibyte character sequences in comments, string literals, and character constants. Default The default is --no_multibyte_chars. Usage Multibyte encodings are used for character sets such as the Japanese Shift-Japanese Industrial Standard (Shift-JIS). See also • --locale=lang_country on page 2-86 • --message_locale=lang_country[.codepage] on page 2-90. 2.1.115 --multifile, --no_multifile This option enables or disables multifile compilation. When --multifile is selected, the compiler performs optimizations across all files specified on the command line, instead of on each individual file. The specified files are compiled into one single object file. The combined object file is named after the first source file you specify on the command line. To specify a different name for the combined object file, use the -o filename option. An empty object file is created for each subsequent source file specified on the command line to meet the requirements of standard make systems. Note Compiling with --multifile has no effect if only a single source file is specified on the command line. 2-92 Copyright © 2007-2010 ARM. All rights reserved. ARM DUI 0348C Non-Confidential, ID101213
Compiler Command-line Options Default The default is --no_multifile, unless the option -O3 is specified. If the option -O3 is specified, then the default is --multifile. Usage When --multifile is selected, the compiler might be able to perform additional optimizations by compiling across several source files. There is no limit to the number of source files that can be specified on the command line, but ten files is a practical limit, because --multifile requires large amounts of memory while compiling. For the best optimization results, choose small groups of functionally related source files. Example armcc -c --multifile test1.c ... testn.c -o test.o The resulting object file is named test.o, instead of test1.c, and empty object files test2.o to testn.o are created for each source file test1.c ... testn.c specified on the command line. See also • -c on page 2-21 • --default_extension=ext on page 2-38 • --ltcg on page 2-88 • -o filename on page 2-95 • -Onum on page 2-96 • --whole_program on page 2-136. 2.1.116 --multiply_latency=cycles This option tells the compiler the number of cycles used by the hardware multiplier. Syntax --multiply_latency=cycles Where cycles is the number of cycles used. ARM DUI 0348C Copyright © 2007-2010 ARM. All rights reserved. 2-93 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 2.1.3
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Language Extensions 3.3 C99 languag
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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 3.7.5 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 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 4.3 Func
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Compiler-specific Features 4.3.2 __
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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 4.5.5 __
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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 Restrict
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Compiler-specific Features 4.7.44 A
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Compiler-specific Features 4.7.47 A
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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
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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 uint8x8_t vset_l
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Using NEON Support float32x2_t vmov
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Using NEON Support // VMLA.I16 d0,
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Using NEON Support E.3.31 Vector re
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