[Bug-mit-scheme] [bug #42727] i386 flonums fail LIAR/svm in float->integers

[Matt Birkholz]

URL:
  <http://savannah.gnu.org/bugs/?42727>

                 Summary: i386 flonums fail LIAR/svm in float->integers
                 Project: MIT/GNU Scheme
            Submitted by: mhb
            Submitted on: Thu 10 Jul 2014 11:23:02 PM IST
                Category: compiler
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: None
                  Status: None
                 Privacy: Public
             Assigned to: None
         Originator Name: 
        Originator Email: 
             Open/Closed: Open
         Discussion Lock: Any
                Keywords: 

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Details:

Building an svm system on a 9.2 i386 host fails with a SIGFPE (overflow) while
cross-compiling runtime/arith.scm, while computing (float->integers 2.0).  The
build on an x86_64 host does not (notice? the) overflow.

Reverting 521ffb3 "On i386, avoid FCOM[P] and FTST in favour of FUCOM[P]."
fixes the problem(!?).




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