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authorSanjay Patel <spatel@rotateright.com>2022-02-07 11:04:22 -0500
committerSanjay Patel <spatel@rotateright.com>2022-02-07 11:33:55 -0500
commit897d92faeff65e5fcccaeaf28cd992bec8f05a50 (patch)
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parentd42765b3bea5ee90426c49f35b0b5654de82a4f9 (diff)
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[InstCombine] generalize 2 LSB of demanded bits for X*X
This is a follow-up suggested in D119060. Instead of checking each of the bottom 2 bits individually, we can check them together and handle the possibility that we demand both together. https://alive2.llvm.org/ce/z/C2ihC2 Differential Revision: https://reviews.llvm.org/D119139
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