2 files changed, 22 insertions, 0 deletions
diff --git a/src/test/java/org/shedlang/compiler/backends/llvm/ir/LlvmIrSerializerInstructionTests.java b/src/test/java/org/shedlang/compiler/backends/llvm/ir/LlvmIrSerializerInstructionTests.java
index 86a5b0d7..99eda802 100644
--- a/src/test/java/org/shedlang/compiler/backends/llvm/ir/LlvmIrSerializerInstructionTests.java
+++ b/src/test/java/org/shedlang/compiler/backends/llvm/ir/LlvmIrSerializerInstructionTests.java
@@ -181,6 +181,19 @@ public class LlvmIrSerializerInstructionTests {
 
         assertThat(result, equalTo("store i64 42, ptr %target"));
     }
+    @Test
+    public void subIsSerializedWithTypeAndOperands() throws IOException {
+        var instruction = LlvmIr.sub(
+            LlvmIr.variableLocal("x"),
+            LlvmTypes.INT_64,
+            LlvmIr.variableLocal("y"),
+            LlvmIr.variableLocal("z")
+        );
+
+        var result = serializeToString(instruction, LlvmIrSerializer::serializeInstruction);
+
+        assertThat(result, equalTo("%x = sub i64 %y, %z"));
+    }
 
     @Test
     public void zextIsSerialized() throws IOException {
diff --git a/src/test/java/org/shedlang/compiler/backends/llvm/ir/ast/LlvmIr.java b/src/test/java/org/shedlang/compiler/backends/llvm/ir/ast/LlvmIr.java
index 59c16bb6..78685315 100644
--- a/src/test/java/org/shedlang/compiler/backends/llvm/ir/ast/LlvmIr.java
+++ b/src/test/java/org/shedlang/compiler/backends/llvm/ir/ast/LlvmIr.java
@@ -158,6 +158,15 @@ public class LlvmIr {
         return new LlvmStore(type, value, pointer);
     }
 
+    public static LlvmSub sub(
+        LlvmVariable target,
+        LlvmType type,
+        LlvmOperand left,
+        LlvmOperand right
+    ) {
+        return new LlvmSub(target, type, left, right);
+    }
+
     public static LlvmTypedOperand typedOperand(LlvmType type, LlvmOperand value) {
         return new LlvmTypedOperand(type, value);
     }