forked from OSchip/llvm-project
be0dedb2e1
Peephole opt has a one use limitation which appears to be accidental. The function being used was incorrectly documented as returning whether the def had one *user*, but instead returned true only when there was one *use*. Add a corresponding hasOneNonDbgUser helper, and adjust peephole-opt to use the appropriate one. All of the actual folding code handles multiple uses within a single instruction. That codepath is well exercised through instruction selection. Differential Revision: https://reviews.llvm.org/D63656 llvm-svn: 364336 |
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