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Always spill the full representative register at any point where any subregister is live. This fixes PR8620 which caused the old logic to get confused and not spill anything at all. The fundamental problem here is that the coalescer is too aggressive about physical register coalescing. It sometimes makes it impossible to allocate registers without these emergency spills. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119375 91177308-0d34-0410-b5e6-96231b3b80d8 |
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