Wind River Diab Compiler - Embedded Tools GmbH

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Wind River Diab CompilerRelease Notes, 5.9.3-Xenum-bitfieldsDo not treat bitfields of type enum the same as bitfields of type int. This mayimprove debug ability.All architectures.See also 6. Documentation Errata, p.13.-Xenum-is-best-oldProvided for backward compatibility, for cases in which the legacy behavior of-Xenum-is-best must be replicated. See Modified Compiler Options, p.6.All architectures.-Xcpp-cr-line-terminatorEnable line terminator behavior of carriage return characters.All architectures.See also 6. Documentation Errata, p.13.-Xmacro-patternsUse extended preprocessor syntax.All architectures.-Xswitch-array-offDisable generating arrays as jump tables for switch blocks.All architectures.See also 6. Documentation Errata, p.13.-Xunroll-register-renameAllow scalar variable to occupy multiple registers for unrolled loops. Note thatthis option may increase code size for certain code on certain targets.All architectures.Modified Compiler Options-Xconservative-static-liveRemoved with this release. Replaced by -Xaggressive-static-live, which hasthe same numeric code (-X139). See New Compiler Options, p.5.All architectures.-Xdebug-modeNow supports the following:0x400Do not emit line number information.0x800Do not emit any producer information.0x1000Do not emit coordinate information for variables, types, and so on.All architectures.-Xenum-is-bestNow has the following behavior for the selection of first two best-fit optionsfor using the smallest signed or unsigned integer type permitted by the range6
2. Changes in This Releaseof values for an enumeration that is sufficient to represent the values of theenumeration constants:■the default char type for the architecture (signed char or unsigned char)■the non-default char type for the architecture (signed char or unsignedchar)Note that the new option -Xenum-is-best-old is provided for backwardcompatibility, for cases in which the legacy behavior must be replicated. SeeNew Compiler Options, p.5.All architectures.-Xrelax-aliasThe default has changed to -Xrelax-alias=0x13.Do not use 0x4 bit of the bit mask. It is no longer supported (as of 5.9.3), andusing it may result in incorrect code. Instead, add 0x20 to the default option(giving 0x33), or equivalently use -Xoptimistic-aliasing.All architectures.New Assembler Options-Xapu-sieEnable SIE (saturation instruction extension) instructions.PowerPC.-Xvle-opt-offDisable automatic instruction optimization from BookE to VLE and from longVLE to short VLE.PowerPC.Modified Linker Options-mThis option now provides the 32 map type mask. Use it with -m2 (as -m34) todisplay the same information as -m2, but without the origins for symbolswithin a COMMON section (which was the default behavior of -m2 prior to5.9.3.0). For example:.bss000807bc 00000178 [COMMON]__fname 000807c0 0000001c__std_file_table 000807dc 00000054__sig_ar 00080830 00000104Note that the -m option documentation now includes an enhanced descriptionof link maps and their generation. See also 6. Documentation Errata, p.13.All architectures.-Xgenerate-paddrNow supports the following bit-mask values:0x1Generate the physical address in the program header table entry (thedefault).0x2Set the section header's sh_addr field to the RAM address.7
Page 1 and 2: Wind RiverDiab Compiler®RELEASE NO
Page 3 and 4: Contents1 Introduction ............
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Page 7 and 8: 2. Changes in This Release2. Change
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Page 13 and 14: 3. System Requirements■Wind River
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Page 17 and 18: 5. Known ProblemsDo not use 0x4 bit
Page 19 and 20: 6. Documentation ErrataAccessing Do

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