ority: P3
Component: c
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: mingqiao dot wu at gmail dot com
GCC build triplet: i686-pc-linux-gnu
GCC host triplet: i686-pc-linux-gnu
GCC target triplet: arm-iwmmxt-linux-gnueabi
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=29140
--- Comment #1 from mingqiao dot wu at gmail dot com 2006-09-19 12:26
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Created an attachment (id=12296)
--> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=12296&action=view)
compare the disassembly result clearly
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=29140
--- Comment #3 from mingqiao dot wu at gmail dot com 2006-09-20 01:22
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(In reply to comment #2)
> You are violating C aliasing rules here (try -Wstrict-aliasing):
>return *(CTLFLOAT*)&bits;
Yes, -O2 turns on -fstrict-aliasing, and I saw many warnings lik
--- Comment #4 from mingqiao dot wu at gmail dot com 2006-09-20 04:48
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After checking gcc manual, I found union can be used to do this conversion.
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=29140
