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------------------------------------------------------------------------ r311554 | mcrosier | 2017-08-23 07:10:06 -0700 (Wed, 23 Aug 2017) | 10 lines [Reassociate] Don't canonicalize x + (-Constant * y) -> x - (Constant * y).. ..if the resulting subtract will be broken up later. This can cause us to get into an infinite loop. x + (-5.0 * y) -> x - (5.0 * y) ; Canonicalize neg const x - (5.0 * y) -> x + (0 - (5.0 * y)) ; Break up subtract x + (0 - (5.0 * y)) -> x + (-5.0 * y) ; Replace 0-X with X*-1. PR34078 ------------------------------------------------------------------------ git-svn-id: https://llvm.org/svn/llvm-project/llvm/branches/release_50@311603 91177308-0d34-0410-b5e6-96231b3b80d8