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[Bug target/19009] Loading of FP constants into FP reg via SSE reg
- From: "uros at kss-loka dot si" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 16 Dec 2004 06:28:23 -0000
- Subject: [Bug target/19009] Loading of FP constants into FP reg via SSE reg
- References: <20041215121502.19009.uros@kss-loka.si>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Additional Comments From uros at kss-loka dot si 2004-12-16 06:28 -------
(In reply to comment #1)
I'm trying to make a testcase out of PovRay sources that trigger this behaviour.
I think that "*movdf_nointeger" is somehow confused and chooses SSE register to
load constant. After that, reload moves SSE reg to FP reg via stack. Perhaps
ix86_preferred_reload_class () needs some fine-tuning regarding to -mfpmath
parameter?
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19009