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69e4786797
When small arguments (structures < 8 bytes or "float") are passed in a stack slot in the ppc64 SVR4 ABI, they must reside in the least significant part of that slot. On BE, this means that an offset needs to be added to the stack address of the parameter, but on LE, the least significant part of the slot has the same address as the slot itself. This changes the PowerPC back-end ABI code to only add the small argument stack slot offset for BE. It also adds test cases to verify the correct behavior on both BE and LE. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@211368 91177308-0d34-0410-b5e6-96231b3b80d8
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