add unchecked invokes (#20313) (#20337)

(cherry picked from commit 8188c1dd59)

Co-authored-by: Jack May <jack@solana.com>

sdk/program/src/program.rs

@@ -1,17 +1,35 @@
 use crate::{account_info::AccountInfo, entrypoint::ProgramResult, instruction::Instruction};
 
-/// Invoke a cross-program instruction
+/// Invoke a cross-program instruction.
 ///
-/// Note that the program id of the instruction being issued must also be included in
+/// Notes:
-/// `account_infos`.
+/// - RefCell checking can be compute unit expensive, to avoid that expense use
+///   `invoke_unchecked` instead, but at your own risk.
+/// - The program id of the instruction being issued must also be included in
+///   `account_infos`.
 pub fn invoke(instruction: &Instruction, account_infos: &[AccountInfo]) -> ProgramResult {
     invoke_signed(instruction, account_infos, &[])
 }
 
+/// Invoke a cross-program instruction but don't enforce RefCell handling.
+///
+/// Notes:
+/// - The missing checks ensured that the invocation doesn't violate the borrow
+///   rules of the `AccountInfo` fields that are wrapped in `RefCell`s.  To
+///   include the checks call `invoke` instead.
+/// - The program id of the instruction being issued must also be included in
+///   `account_infos`.
+pub fn invoke_unchecked(instruction: &Instruction, account_infos: &[AccountInfo]) -> ProgramResult {
+    invoke_signed_unchecked(instruction, account_infos, &[])
+}
+
 /// Invoke a cross-program instruction with program signatures
 ///
-/// Note that the program id of the instruction being issued must also be included in
+/// Notes:
-/// `account_infos`.
+/// - RefCell checking can be compute unit expensive, to avoid that expense use
+///   `invoke_signed_unchecked` instead, but at your own risk.
+/// - The program id of the instruction being issued must also be included in
+///   `account_infos`.
 pub fn invoke_signed(
     instruction: &Instruction,
     account_infos: &[AccountInfo],
@@ -33,6 +51,23 @@ pub fn invoke_signed(
         }
     }
 
+    invoke_signed_unchecked(instruction, account_infos, signers_seeds)
+}
+
+/// Invoke a cross-program instruction with program signatures but don't check
+/// RefCell handling.
+///
+/// Note:
+/// - The missing checks ensured that the invocation doesn't violate the borrow
+///   rules of the `AccountInfo` fields that are wrapped in `RefCell`s.  To
+///   include the checks call `invoke_signed` instead.
+/// - The program id of the instruction being issued must also be included in
+///   `account_infos`.
+pub fn invoke_signed_unchecked(
+    instruction: &Instruction,
+    account_infos: &[AccountInfo],
+    signers_seeds: &[&[&[u8]]],
+) -> ProgramResult {
     #[cfg(target_arch = "bpf")]
     {
         let result = unsafe {