This is the mail archive of the crossgcc@sourceware.cygnus.com mailing list for the crossgcc project.
See the CrossGCC FAQ for lots more infromation.
Index Nav: | [Date Index] [Subject Index] [Author Index] [Thread Index] | |
---|---|---|
Message Nav: | [Date Prev] [Date Next] | [Thread Prev] [Thread Next] |
Ian Lance Taylor wrote: > > Date: Tue, 14 Dec 1999 11:50:50 +0100 > From: Daniel Kahlin <tlr@netinsight.se> > > The problem here is that with the "r" constraint, gcc chooses "r0" sometimes > which does not produce valid powerpc assembly code in this case. > > What asm constraint will make gcc use _any_ general purpose register except > "r0" (on powerpc)? > > Try "b". > > I got this by inspecting gcc/config/rs6000/rs6000.h and looking at > REG_CLASS_CONTENTS and REG_CLASS_FROM_LETTER. As far as I know > process-specific constraint are not documented anywhere. > gcc info file Node: Machine Desc Node: Constraints Node: Machine Constraints _IBM RS6000--`rs6000.h'_ `b' Address base register > Ian > > ------ > Want more information? See the CrossGCC FAQ, http://www.objsw.com/CrossGCC/ > Want to unsubscribe? Send a note to crossgcc-unsubscribe@sourceware.cygnus.com ------ Want more information? See the CrossGCC FAQ, http://www.objsw.com/CrossGCC/ Want to unsubscribe? Send a note to crossgcc-unsubscribe@sourceware.cygnus.com
Index Nav: | [Date Index] [Subject Index] [Author Index] [Thread Index] | |
---|---|---|
Message Nav: | [Date Prev] [Date Next] | [Thread Prev] [Thread Next] |