llvm-6502/lib/CodeGen/LowerSubregs.cpp at b3db9c90d24682340f043a8151063128fe3b220b

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Evan Cheng 95350b9cd2 It's not safe to remove SUBREG_TO_REG that looks like identity copies, e.g. movl %eax, %eax on x86-64 actually does a zero-extend.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52421 91177308-0d34-0410-b5e6-96231b3b80d8

2008-06-17 17:59:16 +00:00

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