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[Bug target/16800] PowerPC - Unnecessary rldicl
- From: "amodra at bigpond dot net dot au" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 24 Nov 2004 09:40:50 -0000
- Subject: [Bug target/16800] PowerPC - Unnecessary rldicl
- References: <20040728170038.16800.steinmtz@us.ibm.com>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Additional Comments From amodra at bigpond dot net dot au 2004-11-24 09:40 -------
Of course, fixing the odd rtx_cost for the (const_int 0) inside an EQ doesn't
help this particular bug. More or less the same happens:
rejecting combination of insns 21 and 22
original costs 4 + 4 = 8
replacement cost 12
It's the 12 counted for EQ that's the problem.
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=16800