pallet-revive: Trade code size for call stack depth

prdoc/pr_6264.prdoc

@@ -0,0 +1,12 @@
+title: 'pallet-revive: Trade code size for call stack depth'
+doc:
+- audience: Runtime Dev
+  description: This will reduce the call stack depth in order to raise the allowed
+    code size. Should allow around 100KB of instructions. This is necessary to stay
+    within the memory envelope. More code size is more appropriate for testing right
+    now. We will re-evaluate parameters once we have 64bit support.
+crates:
+- name: pallet-revive-fixtures
+  bump: major
+- name: pallet-revive
+  bump: major

substrate/frame/revive/fixtures/contracts/oom_rw_trailing.rs

@@ -26,7 +26,7 @@ extern crate common;
 
 use uapi::{HostFn, HostFnImpl as api, ReturnFlags};
 
-static mut BUFFER: [u8; 1025 * 1024] = [0; 1025 * 1024];
+static mut BUFFER: [u8; 2 * 1025 * 1024] = [0; 2 * 1025 * 1024];
 
 #[no_mangle]
 #[polkavm_derive::polkavm_export]

substrate/frame/revive/src/limits.rs

@@ -36,7 +36,7 @@
 ///
 /// A 0 means that no callings of other contracts are possible. In other words only the origin
 /// called "root contract" is allowed to execute then.
-pub const CALL_STACK_DEPTH: u32 = 10;
+pub const CALL_STACK_DEPTH: u32 = 5;
 
 /// The maximum number of topics a call to [`crate::SyscallDoc::deposit_event`] can emit.
 ///
@@ -97,7 +97,7 @@ pub mod code {
 	/// for more code or more data. However, since code will decompress
 	/// into a bigger representation on compilation it will only increase
 	/// the allowed code size by [`BYTE_PER_INSTRUCTION`].
-	pub const STATIC_MEMORY_BYTES: u32 = 1024 * 1024;
+	pub const STATIC_MEMORY_BYTES: u32 = 2 * 1024 * 1024;
 
 	/// How much memory each instruction will take in-memory after compilation.
 	///