--- Comment #6 from rguenth at gcc dot gnu dot org 2007-09-13 21:26 ---
http://www.intel.com/cd/ids/developer/asmo-na/eng/65774.htm?page=4
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33426
--- Comment #5 from rguenth at gcc dot gnu dot org 2007-09-13 21:25 ---
The SGI compiler restricts the pragma to innermost loops. The Intel compiler
restricts the pragma to affect assumed data-dependencies only, that is, if
data dependence analysis statically can prove a data-dependency
--- Comment #4 from pinskia at gcc dot gnu dot org 2007-09-13 21:23 ---
http://techpubs.sgi.com/library/tpl/cgi-bin/getdoc.cgi/0650/bks/SGI_Developer/books/Pragmas/sgi_html/ch08.html
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33426
--- Comment #3 from rguenth at gcc dot gnu dot org 2007-09-13 21:21 ---
#pragma ivdep
Says the compiler may assume the following loop nest does not have loop carried
data dependenices.
Supported at least by SGI CC and the Intel compiler.
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rguenth at gcc dot gnu dot org changed:
--- Comment #2 from pinskia at gcc dot gnu dot org 2007-09-13 21:14 ---
What are the exact semantics of ivdep?
Please provide them before asking if we support it.
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pinskia at gcc dot gnu dot org changed:
What|Removed |Added
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--- Comment #1 from rguenth at gcc dot gnu dot org 2007-09-13 21:12 ---
Confirmed. Zdenek, we should now be able to attach this to loop information
and preserve it until data dependence analysis, right?
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rguenth at gcc dot gnu dot org changed:
What|Removed
