Robin Lindner (Jul 24 2022 at 19:15): Robin Lindner (Jul 24 2022 at 19:15):How would you represent this operand stack in cranelift? (Has anybody wrote some JVM-Bytecode -> Cranelift Code)?
https://docs.oracle.com/javase/specs/jvms/se7/html/jvms-6.html#jvms-6.5.bipush
Afonso Bordado (Jul 24 2022 at 19:20):If you are trying to emulate a stack machine you can try looking at how wasmtime translates wasm to cranelift, which also emulates a stack machine.
I think they just keep track of the stack of values at translation time. See here the code for add
Robin Lindner (Jul 24 2022 at 19:51):@Afonso Bordado Thank you.
Next question: How can I divide two values? FuncInstBuilder does not have idiv
Robin Lindner (Jul 24 2022 at 19:52):same for and/or
Afonso Bordado (Jul 24 2022 at 20:22):We have two instructions for division sdiv which divides two values as if they are signed integers and udiv which does the same but as if they are unsiged.
For bools we prefix instructions with a b, so you'll find those instructions as band and bor
Last updated: Dec 23 2024 at 12:05 UTC