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LLVM backend for 6502
fca3f4021a
are in fact identity operations. We detect these and kill their partitions so that even splitting is unaffected by them. This is particularly important because Clang relies on emitting identity memcpy operations for struct copies, and these fold away to constants very often after inlining. Fixes the last big performance FIXME I have on my plate. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165285 91177308-0d34-0410-b5e6-96231b3b80d8 |
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configure | ||
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