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Jessica Paquette
c6ee9a1aee
Reuse the logic for INSERT_SUBREG to also import SUBREG_TO_REG patterns. - Split `inferSuperRegisterClass` into two functions, one which tries to use an existing TreePatternNode (`inferSuperRegisterClassForNode`), and one that doesn't. SUBREG_TO_REG doesn't have a node to leverage, which is the cause for the split. - Rename GlobalISelEmitterInsertSubreg.td to GlobalISelEmitterSubreg.td and update it. - Update impacted tests in the AArch64 and X86 backends. This is kind of a hit/miss for code size improvements/regressions. E.g. in add-ext.ll, we now get some identity copies. This isn't really anything the importer can handle, since it's caused by a later pass introducing the copy for the sake of correctness. Differential Revision: https://reviews.llvm.org/D66769 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@370254 91177308-0d34-0410-b5e6-96231b3b80d8
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