Add LLVM sub instruction

3 files changed, 23 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 9985d244..6e2577b6 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
@@ -120,6 +120,15 @@ public class LlvmIrSerializer {
                 writer.append(", ptr ");
                 serializeOperand(store.pointer(), writer);
             }
+            case LlvmSub sub -> {
+                serializeVariable(sub.target(), writer);
+                writer.append(" = sub ");
+                serializeType(sub.type(), writer);
+                writer.append(" ");
+                serializeOperand(sub.left(), writer);
+                writer.append(", ");
+                serializeOperand(sub.right(), writer);
+            }
             case LlvmZext zext -> {
                 serializeVariable(zext.target(), writer);
                 writer.append(" = zext ");
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 a9073029..89614e8a 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, LlvmPtrToInt, LlvmStore, LlvmZext {
+public sealed interface LlvmInstruction permits LlvmAdd, LlvmCall, LlvmGetElementPtr, LlvmIcmp, LlvmIntToPtr, LlvmLoad, LlvmPtrToInt, LlvmStore, LlvmSub, LlvmZext {
 }
diff --git a/src/main/java/org/shedlang/compiler/backends/llvm/ir/ast/instructions/LlvmSub.java b/src/main/java/org/shedlang/compiler/backends/llvm/ir/ast/instructions/LlvmSub.java
new file mode 100644
index 00000000..b5ae1a2a
--- /dev/null
+++ b/src/main/java/org/shedlang/compiler/backends/llvm/ir/ast/instructions/LlvmSub.java
@@ -0,0 +1,13 @@
+package org.shedlang.compiler.backends.llvm.ir.ast.instructions;
+
+import org.shedlang.compiler.backends.llvm.ir.ast.operands.LlvmOperand;
+import org.shedlang.compiler.backends.llvm.ir.ast.operands.LlvmVariable;
+import org.shedlang.compiler.backends.llvm.ir.ast.types.LlvmType;
+
+public record LlvmSub(
+    LlvmVariable target,
+    LlvmType type,
+    LlvmOperand left,
+    LlvmOperand right
+) implements LlvmInstruction {
+}