From 441401f9d69146da1f10b7043d9e863161448991 Mon Sep 17 00:00:00 2001
From: bjorn3 <17426603+bjorn3@users.noreply.github.com>
Date: Tue, 25 Oct 2022 19:03:48 +0200
Subject: [PATCH] Fix zero init sequence for i128 in cranelift-frontend (#5115)

iconst.i128 is no longer allowed, so we have to use iconst.i64 + uextend instead.
---
 cranelift/frontend/src/ssa.rs | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/cranelift/frontend/src/ssa.rs b/cranelift/frontend/src/ssa.rs
index 64331a9168..0f2b88e740 100644
--- a/cranelift/frontend/src/ssa.rs
+++ b/cranelift/frontend/src/ssa.rs
@@ -15,7 +15,7 @@ use cranelift_codegen::cursor::{Cursor, FuncCursor};
 use cranelift_codegen::entity::{EntityList, EntitySet, ListPool, SecondaryMap};
 use cranelift_codegen::ir::immediates::{Ieee32, Ieee64};
 use cranelift_codegen::ir::instructions::BranchInfo;
-use cranelift_codegen::ir::types::{F32, F64};
+use cranelift_codegen::ir::types::{F32, F64, I128, I64};
 use cranelift_codegen::ir::{
     Block, Function, Inst, InstBuilder, InstructionData, JumpTableData, Type, Value,
 };
@@ -140,7 +140,10 @@ enum Call {
 
 /// Emit instructions to produce a zero value in the given type.
 fn emit_zero(ty: Type, mut cur: FuncCursor) -> Value {
-    if ty.is_int() {
+    if ty == I128 {
+        let zero = cur.ins().iconst(I64, 0);
+        cur.ins().uextend(I128, zero)
+    } else if ty.is_int() {
         cur.ins().iconst(ty, 0)
     } else if ty == F32 {
         cur.ins().f32const(Ieee32::with_bits(0))