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

[David Spickett via cfe-commits]

DavidSpickett wrote:

@luporl please help reproduce the bot failure https://lab.llvm.org/buildbot/#/builders/39/builds/528.

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