Richard Earnshaw wrote: > On 10/08/12 14:44, Ulrich Weigand wrote: > > Would the following htdocs patch be OK with you? Feel free to suggest > > a more appropriate wording ... > > I think we need to make it clear that this also fixes a bug in the > compiler that could lead to a run-time error. Otherwise, people will be > asking why an abi-breaking change was made mid-cycle.
Something along the following lines? <p>The default alignment of vector types on ARM EABI targets has been changed to 8 bytes (for types larger than 8 bytes in size). This change was necessary in order to fix a bug that could lead to generation of wrong code in certain cases. It also brings the ABI as implemented by GCC back in compliance with the AAPCS. This is an ABI change that affects e.g. layout of structures having a member of vector type. Code using such types may be incompatible with binary objects built with older versions of GCC.</p> Bye, Ulrich -- Dr. Ulrich Weigand GNU Toolchain for Linux on System z and Cell BE ulrich.weig...@de.ibm.com
