Subsequently, this could result in the linker reporting the following error:. This is the initial set of release notes provided at the time of the release. Note that the API of the mitigation is subject to change.
Feedback and Support Your feedback is important to us, and you are welcome to send us defect reports and suggestions for improvement on any aspect of the product. The information may include technical inaccuracies or typographical errors, and may change in future editions of the Release notes.
To avoid this issue, do not use nested calls to the M-profile Vector Extension intrinsics. To avoid this issue, compile with -fstack -protector-all instead of -fstack -protector-strong. This extension is optional in Armv8. To target a specific feature set configuration of Cortex-M55, select from the following options:.
Subsequently, the linker could incorrectly select implementations of floating-point library functions that do not have flush-to-zero mode enabled. The compiler now reports fatal error: sorry, this include generates a translation unit too large for Clang to process.
Subsequently, this could result in spurious memory tagging exceptions against addresses in the stack area. The inline assembler and integrated assembler now report error: expected writable system register or pstate. The legacy assembler now reports Error: AE: Instruction, offset, immediate or register combination is not supported by the current instruction set or Error: AE: Register is Read-Only.
The exact set of targets depends on which license and toolkit you are using. The table is correct at the time of the Arm Compiler 6. Check with your supplier for more information. For more information about the level of support for these targets and the toolchain features, refer to the product documentation. It includes all the features of Gold, and additionally has support for the latest announced IP from Arm.
If you have an earlier version of Arm Compiler 6 installed and you wish to perform an upgrade, it is recommended that you uninstall the previous version before installing the new version of Arm Compiler 6. You can integrate the toolchain with Arm Development Studio Only the bit Windows variant of Arm Compiler 6. From this release, the Reference Guide has been extended to incorporate reference information for all the Arm Compiler tools.
This includes reference information that was provided in separate User Guide documents in previous releases. To target TRBE, select the following armclang options:.
To target ETE, select the following armclang options:. To target TME, select the following armclang options:. To target Star, select from the following armclang options:.
To target Cortex-A65, select the following armclang options:. To target Cortex-A77, select from the following armclang options:. To target SVE2, select from the following armclang options:. Use the following options to enable this model:. For more information about these options, refer to the -fsysv , -fno -sysv and --sysv sections of the Reference Guide. The memory tagging stack protection feature can be used with the following options:.
Use one of the following options to compile for these memory models:. Alpha support has been added for the large code model when compiling for AArch64 state. Use the following option to compile for the large memory model:. For more information, refer to the -mcmodel section of the Reference Guide. In July , cert. Versions before Arm Compiler 6. Subsequently, when an exception is thrown, the variables of the function could be corrupted.
Such incorrect code prematurely released stack memory that must remain reserved throughout the execution of F.
The inline assembler and integrated assembler now report error: invalid instruction and either note: operand must be a register in range [d0, d7] or note: operand must be a register in range [s0, s15]. Subsequently, this could result in unexpected run time behavior. Subsequently, this can result in spurious memory tagging exceptions against addresses in the stack area. A suitable license from one of these products must be available.
The Arm Compiler 6. The license terms for the code included for the libraries has changed, as part of LLVM relicensing, to the Apache 2. Arm Compiler 6 is the successor to Arm Compiler 5 and includes the components listed below. See the Migration and Compatibility Guide in the product documentation for more information on migrating projects from previous versions.
The following table describes the level of support in Arm Compiler 6. The exact set of Architectures and Processors you are able to target using Arm Compiler 6. Contact your supplier for more information. Support Level Description Product features Production quality. Highest support priority. Beta product features Implementation complete, but not thoroughly tested. User experimentation and feedback is welcomed.
Alpha product features Implementation is not complete and not thoroughly tested. Community features Additional features that are available in the open-source technology Arm Compiler 6 is built on. Arm makes no claims about the quality level or the degree of functionality of these features. Unsupported features Features that are either not present in the toolchain or have been deprecated. These features are completely untested. Use entirely at your own risk.
For more information on the supported features and level of support for features, see the product documentation. After it is installed, you can integrate the toolchain with Arm Development Studio For more information, please see Arm Compiler 6 documentation in developer.
Below is a summary of the changes in each release, including new features and defect fixes. Changes are listed since the previous release in each case unless otherwise specified. These instructions are mandatory in Armv8. The legacy assembler armasm does not support these instructions. For more information about these options, refer to the -march and -mcpu sections of the armclang Reference Guide. To target Cortex-A65AE, select from the following options:. To target Neoverse E1, select from the following options:.
To target Neoverse N1, select from the following options:. For more information about this feature, refer to the Global named register variables and -ffixed -rN sections of the armclang Reference Guide. This enables migration of source code that previously used the legacy armcc global named register variables feature.
Use one of the following options to enable the stack protection feature:. For more information about these options, refer to the -fstack -protector, -fstack -protector-strong, -fstack -protector-all, -fno -stack-protector section of the armclang Reference Guide. To access a system register containing a floating-point value, select from the following intrinsics:.
Subsequently, at link-time, the linker would treat V as Code type instead of Data type, which could result in unexpected run time behavior. The inline assembler and integrated assembler now report error: list of registers must be at least 1 and at most Internal consistency check failed. This could result in unexpected run time behavior. When compiling for AArch64 state and the Heap2 implementation is selected, the Arm C library memory allocation functions malloc , realloc , calloc , and free incorrectly specified an 8-byte alignment requirement instead of a byte alignment requirement for a pointer to a memory block.
Additionally, the implementation incorrectly used a bit variable to store the size of a memory block and consequently did not support memory blocks larger than 4GB in size.
Check with your supplier for information about which architectures and processors are supported by other toolkits. After it is installed, you can integrate the toolchain with DS-5 5. Arm recommends using Arm Compiler 6. When using the toolchain outside these environments, you might need to configure the following environment variables:. Branch protection features can be used with the following options:.
To target Cortex-A76, select from the following options:. To target Cortex-M35P, select from the following options:. For more information about these options, refer to the armclang Reference Guide and the LLVM component versions and language compatibility section of the Software Development Guide.
These instructions are optional in Armv8. To target Cortex-A76AE, select from the following options:. The armclang support for Armv8. In a future release of Arm Compiler, armclang will be enhanced to provide full support for Armv8.
The legacy assembler armasm does not support Armv8. PIXO libraries can be built with the following options:. For more information about these options, refer to the -mpixolib section of the armclang Reference Guide , and the --pixolib section of the armlink User Guide. The inline assembler now reports error: asm-specifier for input or output variable conflicts with asm clobber list. Instead, it would generate an instruction that incorrectly has a different but valid set of single-precision floating-point register operands.
The inline assembler and integrated assembler now report error: destination operands must be sequential or error: source operands must be sequential. The resulting type should be the same as M. Instead, it was incorrectly a reference to M. Subsequently, the linker was unable to use such prefixed symbols to patch an existing symbol, which could result in unexpected run time behavior. I32 or VMVN. I32 instruction that specifies an invalid value as the constant operand. Instead, the inline assembler and integrated assembler would generate an instruction that incorrectly has a different but valid value as the constant operand.
The inline assembler and integrated assembler now report error: invalid operand for instruction or error: invalid instruction. Instead, the linker would either report ARM Linker: Execution interrupted due to an illegal storage access , or generate an image containing arbitrary data.
This could result in a generated image that changes in size and content each time it is linked. The linker now reports Warning: LW: String merge section strings. The result would be incorrectly separated by more than one unit in the last place ULP from the exact result. The legacy assembler, librarian, linker and fromelf utility now treat empty string command-line arguments as ordinary arguments.
Please note this path must not contain double quotes on Windows. A path that contains spaces will still work without the quotes. For more information, refer to the -std section of the armclang Reference Guide.
When compiling without -fno -builtin , the compiler can replace such calls with inline code or with calls to other library functions. For more information about this option, refer to the armclang Reference Guide. Instead, the inline assembler and integrated assembler incorrectly ignored the instruction. The inline assembler and integrated assembler now report error: illegal shift operator. Instead, it incorrectly ignored the invalid declaration specifier. The compiler now reports error: invalid declaration specifier in template non-type parameter.
Subsequently, the linker could incorrectly select implementations of library functions containing hardware floating-point instructions. The inline assembler and integrated assembler now report error: invalid operand for instruction. Instead, the inline assembler and integrated assembler would generate an instruction that incorrectly has a different but valid general-purpose register as the specified operand.
The --localize option now only localizes definitions, and not references. The legacy R-type dynamic linking model, which does not conform to the bit Application Binary Interface for the Arm Architecture , will be deprecated in a future release of Arm Compiler 6.
Arm Compiler 6 requires the Microsoft Visual Studio runtime libraries to be installed. If you use the product installer, or the toolchain is installed as part of DS-5, the runtime libraries are installed with the product. If you later copy or move the installation to another host you will need to ensure that the runtime libraries are also available on that host. For more information about selecting specific cryptographic algorithms, refer to the -mcpu section of the armclang Reference Guide.
This could result in the assembler incorrectly treating an invalid instruction as a different but valid instruction. The inline assembler and integrated assembler now report error: unexpected token in argument list.
To avoid the use of LTO:. This unsupported feature is now listed in the Support level definitions section of the armclang Reference Guide , and will not appear as a Known Issue in future Release notes.
If you received ARM Compiler 6. For all other cases, you must select an appropriate installation location depending on how you intend to use ARM Compiler 6. ARM Compiler 6. When ARM Compiler 6. To install ARM Compiler 6. The installer unpacks ARM Compiler 6. If you have an earlier version of ARM Compiler 6 installed and you wish to perform an upgrade, it is recommended that you uninstall the previous version before installing the new version of ARM Compiler 6.
For more information, please see ARM Compiler 6 documentation in developer. If you need to contact ARM about a specific issue within these release notes, please quote the appropriate identifier. To target ARMv8. By default, the linker no longer reports an error in these circumstances.
To restore the previous behavior, use the following option:. Substitution occurs when a valid encoding does not exist for an instruction with a particular immediate, but an equivalent instruction that has the same result with the inverted or negated immediate is available. Support has been added for an option that can be used to disable this feature:.
When -mno -neg-immediates is not specified, the range of substitutions performed by the inline assembler and integrated assembler has also been extended to cover additional valid substitutions for A64, A32, and T This enables migration of source code that previously used the legacy armcc feature pragma arm section.
The compiler now reports one of the following:. The compiler now generates any required constant pools for floating-point literals within read-only data sections. W qualifier and a shifted source operand. The inline assembler and integrated assembler now report error: immediate expression for mov requires :lower or :upper The inline assembler and integrated assembler now report error: instruction requires: crypto.
The integrated assembler can now generate build attributes that can be inferred from the command-line options. The inline assembler and integrated assembler now report error: invalid operand for instruction or error: expected compatible register or floating-point constant.
Some of the installed tools have dependencies on bit system libraries. You must ensure that bit compatibility libraries are installed when using ARM Compiler 6. To install the required libraries, run the appropriate command for your platform with root privileges:. This version of the license client is not compatible with previous versions of the FlexNet Publisher license server software. When used with a license server running an armlmd or lmgrd version earlier than A license server running armlmd and lmgrd version ARM recommends using -ffp -mode rather than -ffast -math or -fno -fast-math.
To specify the behavior of the inline assembler and integrated assembler if there are conditional instructions outside IT blocks, use the following option:. The compiler now avoids adding excessive padding.
The linker will place the associated ZI data at the specified address. The integrated assembler now reports error: invalid symbol redefinition. The inline assembler and integrated assembler now report error: instruction must be outside of IT block or the last instruction in an IT block.
The inline assembler and integrated assembler now report error: no flag-preserving variant of this instruction available. The inline assembler and integrated assembler now report error: instruction requires: fp-armv8. The integrated assembler now also reports the relevant file names, line numbers, and line of source. The assembler now reports Error: AE: Overlarge floating point value.
I32 ,. S32 , or. Choose wisely. Most of the time, just pick the highest version. Errors related to msvcr For instance, a faulty application, msvcr In the vast majority of cases, the solution is to properly reinstall msvcr Make sure to use the 32bit dll-file for 32bit software, and 64bit dll-file for 64bit software. If using a 64bit Windows, install both. Do you have information that we do not? Did our advice help or did we miss something?
To run Windows Update, please follow these easy steps:. Please note that this final step is recommended for advanced PC users only. If none of the previous three troubleshooting steps have resolved your issue, you can try a more aggressive approach Note: Not recommended for amateur PC users by downloading and replacing your appropriate AcAuthEntities23res.
Please follow the steps below to download and properly replace you file:. If this final step has failed and you're still encountering the error, you're only remaining option is to do a clean installation of Windows To avoid data loss, you must be sure that you have backed-up all of your important documents, pictures, software installers, and other personal data before beginning the process.
If you are not currently backing up your data, you need to do so immediately. Autodesk, Inc. The installer's task is to ensure that all correct verifications have been made before installing and placing AcAuthEntities23res. An incorrectly installed DLL file may create system instability and could cause your program or operating system to stop functioning altogether.
Proceed with caution. You are downloading trial software. Subscription auto-renews at the end of the term Learn more. Fix AcAuthEntities23res. Average User Rating. All rights reserved. View Other AcAuthEntities23res. What are AcAuthEntities23res.
Cannot register AcAuthEntities23res. Cannot start AutoCAD.
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