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The existing code in PPCTargetLowering::LowerMUL() for multiplying two v16i8 values assumes that vector elements are numbered in big-endian order. For little-endian targets, the vector element numbering is reversed, but the vmuleub, vmuloub, and vperm instructions still assume big-endian numbering. To account for this, we must adjust the permute control vector and reverse the order of the input registers on the vperm instruction. The existing test/CodeGen/PowerPC/vec_mul.ll is updated to be executed on powerpc64 and powerpc64le targets as well as the original powerpc (32-bit) target. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@210474 91177308-0d34-0410-b5e6-96231b3b80d8 |
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