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Author SHA1 Message Date
Evan Cheng 9156bd2f48 Re-apply 56835 along with header file changes. 
llvm-svn: 56848
 2008-09-30 15:44:16 +00:00
Duncan Sands 2b9adce1d0 Revert commit 56835 since it breaks the build. 
"If a re-materializable instruction has a register
operand, the spiller will change the register operand's
spill weight to HUGE_VAL to avoid it being spilled.
However, if the operand is already in the queue ready
to be spilled, avoid re-materializing it".

llvm-svn: 56837
 2008-09-30 10:00:30 +00:00
Evan Cheng 9469049f7d If a re-materializable instruction has a register operand, the spiller will change the register operand's spill weight to HUGE_VAL to avoid it being spilled. However, if the operand is already in the queue ready to be spilled, avoid re-materializing it. 
llvm-svn: 56835
 2008-09-30 06:36:58 +00:00