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InstCombine converts (sub 32, (add X, C)) into (sub 32-C, X), so a rotate left of a 32-bit Y by X+C could appear as either: (or (shl Y, (add X, C)), (shr Y, (sub 32, (add X, C)))) without InstCombine or: (or (shl Y, (add X, C)), (shr Y, (sub 32-C, X))) with it. We already matched the first form. This patch handles the second too. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@198860 91177308-0d34-0410-b5e6-96231b3b80d8 |
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Analysis | ||
AsmParser | ||
Bitcode | ||
CodeGen | ||
DebugInfo | ||
ExecutionEngine | ||
IR | ||
IRReader | ||
Linker | ||
LTO | ||
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CMakeLists.txt | ||
LLVMBuild.txt | ||
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