Binary incompatible problem between gcc and xl compilers for vector data types
On embedded PowerPC systems, put all initialized global and static data in the. Generate code that keeps does not keeps some integer operations adjacent so that the instructions can be fused together on power8 and later processors. This is the default behavior unless other -msdata options are used. This list might not be complete that is, it is possible that some PRs that have been fixed are not listed here.
For example, by default a structure containing nothing but 8 unsigned bit-fields of length 1 is aligned to a 4-byte boundary and has a size of 4 bytes. This is not likely to work if your system defaults to using IBM extended-precision long double. The resulting code is suitable for applications, but not shared libraries.
The branch island is appended to the body of the calling function; it computes the full bit address of the callee and jumps to it. Do not assume that most significant double in bit long double value is properly rounded when comparing values and converting to double. Do not generate sqrt and div instructions for hardware floating-point unit.
Generate code that uses does not use the non-atomic quad word memory instructions. That is, element zero identifies the leftmost element in a vector register when targeting a big-endian platform, and identifies the rightmost element in a vector register when targeting a little-endian platform. If the TOC value is not saved in the prologue, it is saved just before the call through the pointer. Do not use register r13 to address small data however. Note that while the throughput of the sequence is generally higher than the throughput of the non-reciprocal instruction, the precision of the sequence can be decreased by up to 2 ulp i.
Partial inlining splits functions with short hot path to return. Do not use register r13 to address small data however. If that fails, the gcc-help gcc. Treat the register used for PIC addressing as read-only, rather than loading it in the prologue for each function.
The default for those is as specified in the relevant ABI. This list might not be complete that is, it is possible that some PRs that have been fixed are not listed here. Do not generate sqrt and div instructions for hardware floating-point unit.
Generate code for single- or double-precision floating-point operations. Put small uninitialized global data in the. Generate code that uses does not use the non-atomic quad word memory instructions. Older versions of GCC prior to 4. If that fails, the gcc-help gcc.
These pages are maintained by the GCC team. The default value is target-specific. Generate PowerPC64 code for the large model: This option enables use of the reciprocal estimate and reciprocal square root estimate instructions with additional Newton-Raphson steps to increase precision instead of doing a divide or square root and divide for floating-point arguments.