Add LLVM alloca instruction

3 files changed, 18 insertions, 1 deletions

diff --git a/src/main/java/org/shedlang/compiler/backends/llvm/ir/LlvmIrSerializer.java b/src/main/java/org/shedlang/compiler/backends/llvm/ir/LlvmIrSerializer.java
index 033dd062..a68c7039 100644
--- a/src/main/java/org/shedlang/compiler/backends/llvm/ir/LlvmIrSerializer.java
+++ b/src/main/java/org/shedlang/compiler/backends/llvm/ir/LlvmIrSerializer.java
@@ -51,6 +51,13 @@ public class LlvmIrSerializer {
                 writer.append(", ");
                 serializeOperand(add.right(), writer);
             }
+
+            case LlvmAlloca alloca -> {
+                serializeVariable(alloca.target(), writer);
+                writer.append(" = alloca ");
+                serializeType(alloca.type(), writer);
+            }
+
             case LlvmCall call -> {
                 if (call.target().isPresent()) {
                     serializeVariable(call.target().get(), writer);
diff --git a/src/main/java/org/shedlang/compiler/backends/llvm/ir/ast/instructions/LlvmAlloca.java b/src/main/java/org/shedlang/compiler/backends/llvm/ir/ast/instructions/LlvmAlloca.java
new file mode 100644
index 00000000..cb9277ad
--- /dev/null
+++ b/src/main/java/org/shedlang/compiler/backends/llvm/ir/ast/instructions/LlvmAlloca.java
@@ -0,0 +1,10 @@
+package org.shedlang.compiler.backends.llvm.ir.ast.instructions;
+
+import org.shedlang.compiler.backends.llvm.ir.ast.operands.LlvmVariable;
+import org.shedlang.compiler.backends.llvm.ir.ast.types.LlvmType;
+
+public record LlvmAlloca(
+    LlvmVariable target,
+    LlvmType type
+) implements LlvmInstruction {
+}
diff --git a/src/main/java/org/shedlang/compiler/backends/llvm/ir/ast/instructions/LlvmInstruction.java b/src/main/java/org/shedlang/compiler/backends/llvm/ir/ast/instructions/LlvmInstruction.java
index 9f55361c..57bccf19 100644
--- a/src/main/java/org/shedlang/compiler/backends/llvm/ir/ast/instructions/LlvmInstruction.java
+++ b/src/main/java/org/shedlang/compiler/backends/llvm/ir/ast/instructions/LlvmInstruction.java
@@ -1,4 +1,4 @@
 package org.shedlang.compiler.backends.llvm.ir.ast.instructions;
 
-public sealed interface LlvmInstruction permits LlvmAdd, LlvmCall, LlvmGetElementPtr, LlvmIcmp, LlvmIntToPtr, LlvmLoad, LlvmPhi, LlvmPtrToInt, LlvmStore, LlvmSub, LlvmTrunc, LlvmZext {
+public sealed interface LlvmInstruction permits LlvmAdd, LlvmAlloca, LlvmCall, LlvmGetElementPtr, LlvmIcmp, LlvmIntToPtr, LlvmLoad, LlvmPhi, LlvmPtrToInt, LlvmStore, LlvmSub, LlvmTrunc, LlvmZext {
 }