Our configure logic for excluding XMM register use is flawed. We should to keep SSE2 availability from XMM availability apart, since a CPU which supports SSE2 will always handle SSE2+MMX, while XMM requires operating system support. Now, we suppress use of (some) gcc sse-related options which trigger bad behaviour (via the acinclude.m4 GMP_GCC_PENTIUM4_SSE2) and in that context check of the OS handles XMM (via GMP_OS_X86_XMM).
Limiting that check to that context does not properly suppress assembly code in sse2 subdirs. Suppressing all that code would actually be sub-optimal, since some of it might actually stick to MMX regs. I discovered this problem when running tests on the long-obsolete FreeBSD 4. It would be nice to clean this up, but I won't have time to work on it before the release. Torbjörn _______________________________________________ gmp-devel mailing list gmp-devel@gmplib.org https://gmplib.org/mailman/listinfo/gmp-devel
