[Bug target/34702] 1.0 is not the inverse of 1.0 with -mrecip on x86

2009-09-17 Thread ubizjak at gmail dot com
--- Comment #8 from ubizjak at gmail dot com 2009-09-17 09:46 --- This is just expected behavior, documented for -mrecip. -- ubizjak at gmail dot com changed: What|Removed |Added -

[Bug target/34702] 1.0 is not the inverse of 1.0 with -mrecip on x86

2008-01-08 Thread dominiq at lps dot ens dot fr
--- Comment #7 from dominiq at lps dot ens dot fr 2008-01-08 14:20 --- > the NR enhanced reciprocals provide adequate precision with great speedup Two quick remarks along this line: (1) On Core2Duo the speedup is not obvious for the polyhedron testsuite, excepted for gas_dyn 7.7s vs. 8

[Bug target/34702] 1.0 is not the inverse of 1.0 with -mrecip on x86

2008-01-08 Thread ubizjak at gmail dot com
--- Comment #6 from ubizjak at gmail dot com 2008-01-08 14:02 --- (In reply to comment #3) > It looks nice, but could you add (after converting my frenglish) something > along the line "in particular the inverse of 1.0 is no longer 1.0, but > 0.9994" (or nearest(1.0,-1.0) or its C*

[Bug target/34702] 1.0 is not the inverse of 1.0 with -mrecip on x86

2008-01-08 Thread uros at gcc dot gnu dot org
--- Comment #5 from uros at gcc dot gnu dot org 2008-01-08 13:51 --- Subject: Bug 34702 Author: uros Date: Tue Jan 8 13:50:14 2008 New Revision: 131394 URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=131394 Log: PR target/34702 * doc/invoke.texi (i386 and x86-64

[Bug target/34702] 1.0 is not the inverse of 1.0 with -mrecip on x86

2008-01-08 Thread rguenth at gcc dot gnu dot org
--- Comment #4 from rguenth at gcc dot gnu dot org 2008-01-08 10:17 --- I agree, this is not a regression, but a documentation issue (patch was posted). -- rguenth at gcc dot gnu dot org changed: What|Removed |Added