[clang] [clang][Interp] Implement dynamic memory allocation handling (PR #70306)

[Timm Baeder via cfe-commits]

tbaederr wrote:

> You can also try it under qemu - https://linaro.atlassian.net/wiki/spaces/TCWGPUB/pages/29360783374/How+to+Reproduce+32+bit+Arm+Builds+Without+Hardware.

https://github.com/llvm/llvm-project/pull/70306