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When looping through a destination pattern's operands to decide how many default operands we need to introduce, we used to count the "expanded" number of operands. So if one default operand would be rendered as 2 values, we'd count it as 2 operands, when in fact it needs to count as only 1 operand regardless of how many values it expands to. This turns out to be a problem only in some very specific cases, e.g. when we have one operand with multiple default values followed by more operands with default values (see the new test). In such a situation we'd stop looping before looking at all the operands, and then error out assuming that we don't have enough default operands to make up the shortfall. At the moment this only affects ARM. The patch removes the loop counting default operands entirely and assumes that we'll have to introduce values for any default operand that we find (i.e. we're assuming it cannot be given as a child at all). It also extracts the code for adding renderers for default operands into a helper method. Differential Revision: https://reviews.llvm.org/D33031 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@303240 91177308-0d34-0410-b5e6-96231b3b80d8 |
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