Jakob Stoklund Olesen 74f9e359dd Keep track of register masks in LiveIntervalAnalysis. ... Build an ordered vector of register mask operands (i.e., calls) when computing live intervals. Provide a checkRegMaskInterference() function that computes a bit mask of usable registers for a live range. This is a quick way of determining of a live range crosses any calls, and restricting it to the callee saved registers if it does. Previously, we had to discover call clobbers for each candidate register independently. llvm-svn: 150077		2012-02-08 17:33:45 +00:00
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llvm	Keep track of register masks in LiveIntervalAnalysis.	2012-02-08 17:33:45 +00:00
llvm-c	[unwind removal] Remove all of the code for the dead 'unwind' instruction. There	2012-02-06 21:44:22 +00:00