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Well, someone correct me if am wrong, but, you still have to allocate physical registers to them, because their values must be reloaded before been used. But after you spill a register, you break its live ranges, so, each use of that register can be loaded into a different physical. In my register allocator, after I spill reg_v: For each use of reg_v: create a new reg_v' replace reg_v

On 8/7/06, Chris Lattner <sabre at nondot.org> wrote: > > On Sun, 6 Aug 2006, Anton Vayvod wrote: > > I'm developing a register allocator that works iteratively. It spills > some > > virtual registers on each iteration until all the rest have physical > ones > > assigned. > > Take a look at the linear scan allocator. It is also iterative: it uses >

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