From 0ea6b1586cdb64bf91d47146135fb7b55c634459 Mon Sep 17 00:00:00 2001
From: Yoshitomo Nakanishi <yurayura.rounin.3@gmail.com>
Date: Sun, 24 Nov 2024 18:01:52 +0100
Subject: [PATCH] Add `GetFunctionPtr` instruction

---
 crates/ir/src/inst/data.rs     | 8 +++++++-
 crates/ir/src/inst/inst_set.rs | 1 +
 crates/parser/src/inst/data.rs | 1 +
 3 files changed, 9 insertions(+), 1 deletion(-)

diff --git a/crates/ir/src/inst/data.rs b/crates/ir/src/inst/data.rs
index 3b5d874b..42ab1295 100644
--- a/crates/ir/src/inst/data.rs
+++ b/crates/ir/src/inst/data.rs
@@ -1,7 +1,7 @@
 use macros::Inst;
 use smallvec::SmallVec;
 
-use crate::{inst::impl_inst_write, Type, ValueId};
+use crate::{inst::impl_inst_write, module::FuncRef, Type, ValueId};
 
 #[derive(Debug, Clone, Copy, PartialEq, Eq, Hash, Inst)]
 #[inst(side_effect(super::SideEffect::Read))]
@@ -30,6 +30,12 @@ pub struct Gep {
 }
 impl_inst_write!(Gep);
 
+#[derive(Debug, Clone, PartialEq, Eq, Hash, Inst)]
+pub struct GetFunctionPtr {
+    func: FuncRef,
+}
+impl_inst_write!(GetFunctionPtr);
+
 #[derive(Debug, Clone, PartialEq, Eq, Hash, Inst)]
 #[inst(side_effect(super::SideEffect::Write))]
 pub struct Alloca {
diff --git a/crates/ir/src/inst/inst_set.rs b/crates/ir/src/inst/inst_set.rs
index 74344acc..dcd4d5b3 100644
--- a/crates/ir/src/inst/inst_set.rs
+++ b/crates/ir/src/inst/inst_set.rs
@@ -48,6 +48,7 @@ define_inst_set_base! {
         data::Mload,
         data::Mstore,
         data::Gep,
+        data::GetFunctionPtr,
         data::Alloca,
         data::InsertValue,
         data::ExtractValue,
diff --git a/crates/parser/src/inst/data.rs b/crates/parser/src/inst/data.rs
index 995855ab..797a5ed5 100644
--- a/crates/parser/src/inst/data.rs
+++ b/crates/parser/src/inst/data.rs
@@ -6,6 +6,7 @@ use crate::{ast, error::ArityBound, BuildCtx, Error};
 super::impl_inst_build! {Mload, (addr: ValueId, ty: Type)}
 super::impl_inst_build! {Mstore, (addr: ValueId, value: ValueId, ty: Type)}
 super::impl_inst_build_common! {Gep, ArityBound::AtLeast(2), build_gep}
+super::impl_inst_build! {GetFunctionPtr, (func: FuncRef)}
 super::impl_inst_build! {Alloca, (ty: Type)}
 super::impl_inst_build! {InsertValue, (dest: ValueId, idx: ValueId, value: ValueId)}
 super::impl_inst_build! {ExtractValue, (dest: ValueId, idx: ValueId)}