Mitigate ConstantArrayType size increase

[llvm-beanz]

The changes in #79382, introduce an increase in the size of the ConstantArrayType, which can cascade and have an impact on overall compiler memory usage.

@zygoloid recommended an approach to preserve the memory size optimization:
#79382 (comment)

We should implement that change then rebase #79382 on top of it once it is in.

[llvmbot]

@llvm/issue-subscribers-clang-frontend

Author: Chris B (llvm-beanz)

The changes in #79382, introduce an increase in the size of the `ConstantArrayType`, which can cascade and have an impact on overall compiler memory usage.

@zygoloid recommended an approach to preserve the memory size optimization:
#79382 (comment)

We should implement that change then rebase #79382 on top of it once it is in.

[llvmbot]

@llvm/issue-subscribers-clang-codegen

Author: Chris B (llvm-beanz)

The changes in #79382, introduce an increase in the size of the `ConstantArrayType`, which can cascade and have an impact on overall compiler memory usage.

@zygoloid recommended an approach to preserve the memory size optimization:
#79382 (comment)

We should implement that change then rebase #79382 on top of it once it is in.