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Andrew Lenharth wrote: > On Tue, 2006-05-23 at 13:04 -0500, Chris Lattner wrote: >> > That approach sounds suboptimal. By "reserving" one register we can >> > already cause some values to be spilled, that otherwise would be stored >> > in register. >> >> Right. >> >> PowerPC has the same problem in certain cases. For example,

On Tue, 2006-05-23 at 13:04 -0500, Chris Lattner wrote: > > That approach sounds suboptimal. By "reserving" one register we can already > > cause some values to be spilled, that otherwise would be stored in > > register. > > Right. > > PowerPC has the same problem in certain cases. For example, vector loads > only support reg+reg addressing, which

I am trying to add support for select_cc. In ARM it can be implemented with: mov $dst, $falseVal cmp $a, $b moveq $dst, $trueVal My current strategy is to expand select_cc in two ARM nodes: ARM::SELECT and ARM::CMP. The two nodes would be connected by a flag edge. ARM::CMP would then expand to "cmp $a, $b". This instruction has no results. It only alters the CPSR (current program