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95d110920e
getTargetNode and SelectNodeTo to reduce duplication, and to make some of the getTargetNode code available to SelectNodeTo. Use SelectNodeTo instead of getTargetNode in several new interesting cases, as it mutates nodes in place instead of creating new ones. This triggers some scheduling behavior differences due to nodes being presented to the scheduler in a different order. Some of the arbitrary scheduling decisions it makes are now arbitrarily made differently. This is visible in CodeGen/PowerPC/LargeAbsoluteAddr.ll, where a trivial scheduling difference led to a trivial register allocation difference. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53203 91177308-0d34-0410-b5e6-96231b3b80d8 |
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