Move Insn::GetEP into block where it is used. This diminishes test diffs substantially.

Author: jacob-shops

zjit/src/hir.rs

@@ -6786,11 +6786,11 @@ pub fn iseq_to_hir(iseq: *const rb_iseq_t) -> Result<Function, ParseError> {
                 YARVINSN_setlocal_WC_0 => {
                     let ep_offset = get_arg(pc, 0).as_u32();
                     const level: u32 = 0;
-                    let ep = fun.push_insn(block, Insn::GetEP { level });
                     let val = state.stack_pop()?;
                     // In ZJIT, Insn::SetLocal only needs to be executed when ep is escaped
                     if ep_escaped || has_blockiseq { // TODO: figure out how to drop has_blockiseq here
                         // Write the local using EP
+                        let ep = fun.push_insn(block, Insn::GetEP { level });
                         let exit_id = fun.push_insn(block, Insn::Snapshot { state: exit_state.without_locals() }); // skip spilling locals
                         let flags = fun.push_insn(block, Insn::LoadField { recv: ep, id: ID!(_env_data_index_flags), offset: SIZEOF_VALUE_I32 * (VM_ENV_DATA_INDEX_FLAGS as i32), return_type: types::CInt64 });
                         fun.push_insn(block, Insn::GuardNoBitsSet { val: flags, mask: Const::CUInt64(VM_ENV_FLAG_WB_REQUIRED.into()), reason: SideExitReason::WriteBarrierRequired, state: exit_id });