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Re: optimization/7897: gcc3.2 fails building kdeaddons when using the -march=pentium4 flag
- From: hubicka at gcc dot gnu dot org
- To: gcc-bugs at gcc dot gnu dot org, gcc-prs at gcc dot gnu dot org, mhillary at btopenworld dot com, nobody at gcc dot gnu dot org
- Date: 9 Oct 2002 17:29:18 -0000
- Subject: Re: optimization/7897: gcc3.2 fails building kdeaddons when using the -march=pentium4 flag
- Reply-to: hubicka at gcc dot gnu dot org, gcc-bugs at gcc dot gnu dot org, gcc-prs at gcc dot gnu dot org, mhillary at btopenworld dot com, nobody at gcc dot gnu dot org, gcc-gnats at gcc dot gnu dot org
Synopsis: gcc3.2 fails building kdeaddons when using the -march=pentium4 flag
State-Changed-From-To: feedback->open
State-Changed-By: hubicka
State-Changed-When: Wed Oct 9 10:29:18 2002
State-Changed-Why:
It is dealing with SSE registers. Looks like 7630 duplicate. We allow DImode in XMM and subreg DI->DF is actually the problem - we fail to reload DImode value to DFmode that is quite correct. Perhaps CLASS_CANNOT_CHANGE_MODE for FLOAT_REGS?
I've raised the priority of the other bug, so I am keeping this medium
http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=7897