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Kai Luo
5a52a910f1
[PowerPC][Peephole] Combine extsw and sldi after instruction selection
Summary: `extsw` and `sldi` are supposed to be combined if they are in the same BB in instruction selection phase. This patch handles the case where extsw and sldi are not in the same BB. Differential Revision: https://reviews.llvm.org/D63806 llvm-svn: 365430
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