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2 Commits

Author SHA1 Message Date
Jakob Stoklund Olesen
ce0f9aef12 Don't run RAFast in the optimizing regalloc pipeline.
The fast register allocator is not supposed to work in the optimizing
pipeline. It doesn't make sense to compute live intervals, run full copy
coalescing, and then run RAFast.

Fast register allocation in the optimizing pipeline is better done by
RABasic.

llvm-svn: 158242
2012-06-08 23:15:12 +00:00
Jakob Stoklund Olesen
c07fd51d56 Avoid allocating the same physreg to multiple virtregs in one instruction.
While that approach works wonders for register pressure, it tends to break
everything.

This should unbreak the arm-linux builder and fix a number of miscompilations.

llvm-svn: 103946
2010-05-17 17:18:59 +00:00