Add LLVM alloca instruction

2 files changed, 19 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 83bf54bb..17a17343 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
@@ -28,6 +28,18 @@ public class LlvmIrSerializerInstructionTests {
     }
 
     @Test
+    public void allocaIsSerialized() throws IOException {
+        var instruction = LlvmIr.alloca(
+            LlvmIr.variableLocal("x"),
+            LlvmTypes.INT_64
+        );
+
+        var result = serializeToString(instruction, LlvmIrSerializer::serializeInstruction);
+
+        assertThat(result, equalTo("%x = alloca i64"));
+    }
+
+    @Test
     public void brIsSerializedWithOperandAndLabels() throws IOException {
         var instruction = LlvmIr.br(
             LlvmIr.variableLocal("x"),
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 49a653c5..3a317c3d 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
@@ -23,6 +23,13 @@ public class LlvmIr {
         return new LlvmAdd(target, type, left, right);
     }
 
+    public static LlvmAlloca alloca(
+        LlvmVariable target,
+        LlvmType type
+    ) {
+        return new LlvmAlloca(target, type);
+    }
+
     public static LlvmBasicBlock basicBlock(
         List<LlvmInstruction> instructions,
         LlvmTerminatorInstruction terminator