Jakob Stoklund Olesen 9594629bf1 Partition use lists so defs always come before uses. ... This makes it possible to speed up def_iterator by stopping at the first use. This makes def_empty() and getUniqueVRegDef() much faster when there are many uses. In a +Asserts build, LiveVariables is 100x faster in one case because getVRegDef() has an assertion that would scan to the end of a def_iterator chain. Spill weight calculation is significantly faster (300x in one case) because isTriviallyReMaterializable() calls MRI->isConstantPhysReg(%RIP) which calls def_empty(%RIP). llvm-svn: 161634		2012-08-09 22:49:46 +00:00
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llvm	Partition use lists so defs always come before uses.	2012-08-09 22:49:46 +00:00
llvm-c	Remove tabs.	2012-07-19 00:01:33 +00:00