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Artem Dergachev authoredSValBuilder tries to constant-fold symbols in the left-hand side of the symbolic expression whenever it fails to evaluate the expression directly. However, it only constant-folds them when they are atomic expressions, not when they are complicated expressions themselves. This patch adds recursive constant-folding to the left-hand side subexpression (there's a lack of symmetry because we're trying to have symbols on the left and constants on the right). As an example, we'd now be able to handle operations similar to "$x + 1 < $y", when $x is constrained to a constant. rdar://problem/31354676 Differential Revision: https://reviews.llvm.org/D31886 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@300178 91177308-0d34-0410-b5e6-96231b3b80d8
Artem Dergachev authoredSValBuilder tries to constant-fold symbols in the left-hand side of the symbolic expression whenever it fails to evaluate the expression directly. However, it only constant-folds them when they are atomic expressions, not when they are complicated expressions themselves. This patch adds recursive constant-folding to the left-hand side subexpression (there's a lack of symmetry because we're trying to have symbols on the left and constants on the right). As an example, we'd now be able to handle operations similar to "$x + 1 < $y", when $x is constrained to a constant. rdar://problem/31354676 Differential Revision: https://reviews.llvm.org/D31886 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@300178 91177308-0d34-0410-b5e6-96231b3b80d8
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