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archived-llvm/test/CodeGen/X86
Nikita Popov f7a652c414 [SDAG] Expand pow2 mulo using shifts
Expand MULO with constant power of two operand into a shift. The
overflow is checked with (x << shift) >> shift == x, where the right
shift will be logical for umulo and arithmetic for smulo (with
exception for multiplications by signed_min).

Differential Revision: https://reviews.llvm.org/D59041

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@355937 91177308-0d34-0410-b5e6-96231b3b80d8
2019-03-12 16:57:25 +00:00
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