[compiler-rt] [win/asan] Improve SharedReAlloc with HEAP_REALLOC_IN_PLACE_ONLY. (PR #132558)

[via llvm-commits]

bernhardu wrote:

Hello, I wonder if such a patch would be acceptable?

Also I am not sure which configurations this should be tested before final submission?
Currently I have only tested it with a maybe less used llvm-mingw configuration.

I found also most heap(re)alloc or rtlallocateheap tests contain an `UNSUPPORTED: asan-64-bits` or `REQUIRES: asan-32-bits`. Is there a reason known why these are currently not enabled for 64-bits?

https://github.com/llvm/llvm-project/pull/132558