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…SubroutineType (#91422)" This reverts commit 3ca17443ef4af21bdb1f3b4fbcfff672cbc6176c. As reported in [1,2] the commit above causes CI failure for powerpc-aix target. There is also a performance regression reported in [3]. Reverting to comply with the developer policy. [1] https://github.com/llvm/llvm-project/pull/91422#issuecomment-2179425473 [2] https://lab.llvm.org/buildbot/#/builders/64/builds/62 [3] https://github.com/llvm/llvm-project/pull/91422#issuecomment-2175631443