ARM Compiler toolchain v4.1 for ÂµVision Using the Compiler

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Compiler Features • C55x intrinsics on page 5-91. ARM DUI 0375C Copyright © 2007-2008, 2011 ARM. All rights reserved. 4-4 ID061811 Non-Confidential
Compiler Features 4.2 Performance benefits of compiler intrinsics The use of compiler intrinsics offers the following performance benefits: • The low-level instructions substituted for an intrinsic might be more efficient than corresponding implementations in C or C++, resulting in both reduced instruction and cycle counts. To implement the intrinsic, the compiler automatically generates the best sequence of instructions for the specified target architecture. For example, the L_add intrinsic maps directly to the ARM v5TE assembly language instruction qadd: QADD r0, r0, r1 /* Assuming r0 = a, r1 = b on entry */ • More information is given to the compiler than the underlying C and C++ language is able to convey. This enables the compiler to perform optimizations and to generate instruction sequences that it could not otherwise have performed. These performance benefits can be significant for real-time processing applications. However, care is required because the use of intrinsics can decrease code portability. 4.2.1 See also Concepts • Compiler intrinsics on page 4-3. ARM DUI 0375C Copyright © 2007-2008, 2011 ARM. All rights reserved. 4-5 ID061811 Non-Confidential
Page 1 and 2: ® ARM Compiler toolchain v4.1 for
Page 3 and 4: Contents ARM Compiler toolchain v4.
Page 5 and 6: Contents 5.19 Inline functions ....
Page 7 and 8: Contents 7.41 __mcall_is_virtual(D,
Page 9 and 10: Conventions and Feedback • the se
Page 11 and 12: Overview of the compiler 2.1 The co
Page 13 and 14: Overview of the compiler 2.3 The C
Page 15 and 16: Getting started with the Compiler
Page 17 and 18: Getting started with the Compiler 3
Page 19 and 20: Getting started with the Compiler
Page 25 and 26: Getting started with the Compiler R
Page 45 and 46: Chapter 4 Compiler Features The fol
Page 47: Compiler Features 4.1 Compiler intr
Page 51 and 52: Compiler Features 4.4 Generic intri
Page 53 and 54: Compiler Features 4.6 Compiler intr
Page 55 and 56: Compiler Features 4.8 Compiler intr
Page 57 and 58: Compiler Features 4.10 Compiler sup
Page 59 and 60: Compiler Features 4.12 Texas Instru
Page 61 and 62: Compiler Features /* Declare PSR as
Page 63 and 64: Compiler Features 4.13.1 See also R
Page 65 and 66: Compiler Features 4.15 Compiler and
Page 67 and 68: Compiler Features Using the Linker:
Page 69 and 70: Compiler Features Reference Compile
Page 71 and 72: Compiler Features 4.19 Compiler sup
Page 73 and 74: Compiler Features 4.21 PreCompiled
Page 75 and 76: Compiler Features 4.23 PreCompiled
Page 77 and 78: Compiler Features Reference Compile
Page 79 and 80: Compiler Features 4.26 Obsolete Pre
Page 81 and 82: Compiler Features 4.28 Selectively
Page 83 and 84: Compiler Features 4.30 Message outp
Page 85 and 86: Compiler Features 4.32 Default comp
Page 87 and 88: Compiler Coding Practices • Guard
Page 89 and 90: Compiler Coding Practices • Exten
Page 91 and 92: Compiler Coding Practices 5.2 Compi
Page 93 and 94: Compiler Coding Practices 5.4 Selec
Page 95 and 96: Compiler Coding Practices In additi
Page 97 and 98: Compiler Coding Practices Table 5-4
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Compiler Coding Practices Table 5-6
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Compiler Coding Practices 5.9 Code
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Compiler Coding Practices 4. After
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Compiler Coding Practices 5.12 Meth
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Compiler Coding Practices 5.14 Meth
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Compiler Coding Practices 5.16 Func
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Compiler Coding Practices Reference
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Compiler Coding Practices • __val
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Compiler Coding Practices 5.20 Comp
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Compiler Coding Practices 5.21 Auto
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Compiler Coding Practices 5.23 Auto
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Compiler Coding Practices 5.27 Inli
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Compiler Coding Practices 5.28 Inli
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Compiler Coding Practices 5.30 Adva
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Compiler Coding Practices 5.32 Rele
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Compiler Coding Practices 5.34 The
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Compiler Coding Practices 5.36 Perf
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Compiler Coding Practices 5.38 Unal
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Compiler Coding Practices (LDR/STR/
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Compiler Coding Practices • Hexad
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Compiler Coding Practices 5.42 Exam
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Compiler Coding Practices 5.43 Vect
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Compiler Coding Practices 5.45 Impl
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Compiler Coding Practices 5.47 Half
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Compiler Coding Practices 5.49 Type
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Compiler Coding Practices If you us
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Compiler Coding Practices 5.52 Abou
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Compiler Coding Practices 5.54 Iden
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Compiler Coding Practices 5.56 Soft
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Compiler Coding Practices 5.58 Iden
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Compiler Coding Practices 5.59 Soft
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Compiler Coding Practices 5.60.1 Se
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Compiler Coding Practices 5.62 // c
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Compiler Coding Practices 5.64 Desi
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Compiler Coding Practices 5.66 Flex
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Compiler Coding Practices 5.68 inli
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Compiler Coding Practices 5.70 Macr
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Compiler Coding Practices 5.72 New
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Compiler Coding Practices 5.74 Rest
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Compiler Coding Practices 5.78 Exte
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Compiler Coding Practices 5.80 snp
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Compiler Coding Practices 5.82 wid
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Chapter 6 Compiler Diagnostic Messa
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Compiler Diagnostic Messages 6.2 Se
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Compiler Diagnostic Messages 6.4 Pr
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Compiler Diagnostic Messages 6.6 Co
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Using the Inline and Embedded Assem
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ARM Compiler toolchain v4.1 for ÂµVision Using the Compiler

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