peephole2: dead regs not marked as dead

Paolo Bonzini bonzini@gnu.org
Thu Oct 28 08:34:00 GMT 2010


On 10/22/2010 01:16 PM, Georg Lay wrote:
> I already tried to fix this by introducing a different return-pattern, i.e. a
> PARALLEL of return and bunch of clobbers of unused regs. That fixes this problem
> but has many other disadvantages compared to a simple return.

What were this disadvantages?

Paolo



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