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Author SHA1 Message Date
Jakob Stoklund Olesen 33a1b416ac 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 176a9c4272 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