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Merged
Opened Aug 27, 2020 by Raymond Toy@rtoyOwner

Fix #86: save fpu state on entry to alloc

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With gcc, alloc() is compiled to use xmm registers before we can save them. So, let's save the xmm registers in alloc_overflow_sse2 which calls alloc. The issue we see with gcc not working is gone now.

While we're at it, use the __attribute__ option to get a 16-byte aligned area where we can save the fpu state.

And also set optimization to -O2 for linux effectively undoing #68 (closed).

Edited Aug 29, 2020 by Raymond Toy
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Reference: cmucl/cmucl!53
Source branch: issue-86-save-fpu-state-on-entry-to-alloc

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