Allocating Heap with Cranelift

• cranelift-jit-demo

  8 603 3.5 Rust

  JIT compiler and runtime for a toy language, using Cranelift

  

I'm working on a small stack-based programming language. I'm currently at a stage where I'm trying to compile it using Cranelift. Altrough the Cranelift documentation is extensive, I'm lacking a broader picture on how to approach some things like heap-allocations and stack-management. The only example project I found are cranelift-jit-demo and this wonderful post.

• wasmtime

  172 14,407 10.0 Rust

  A fast and secure runtime for WebAssembly

  

So, does someone know how to allocate memory on the heap using Cranelift? I've seen instructions like heap_addr, heap_load and heap_store so there should be some way (altrough I don't understand why we can't use the normal load and store here..). create_heap would be my best guess, but it takes a HeapData which confuses me. Dafuq is an index_type, HeapStyle and offset_guard_size? How do I get a GlobalValue for it? How do I free it? Or maybe I should just use C's malloc/free instead... On the other hand direct support for heaps seems to be removed? Sigh. I'm confused.

• WorkOS

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• stack2ssa

  1 9 10.0 Rust

  Simple implementation of stack to SSA IR lowering

And I need heap-allocations anyway for storing larger objects. Thx for the stack2ssa tip, found thisand it seems interesting..

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