To be conform to the ISO C standard (when FLT_EVAL_METHOD is 0, 1 or 2, which
is the case of gcc), gcc should either take FP_CONTRACT pragmas into account or
(in the mean time) assume they are set to OFF, i.e. disallow the contraction of
floating expressions. This means in particular that -mno-fused-madd should be
the default (with processors for which this option is supported, e.g. PowerPC).
I've tested with gcc-4.4-20081010 on ia64 that this bug is still present.
--
Summary: gcc ignores FP_CONTRACT pragma set to OFF
Product: gcc
Version: 4.4.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: middle-end
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: vincent at vinc17 dot org
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37845
