From d4a8c7d7cba85e107b8532036b6e6838c57f4e2a Mon Sep 17 00:00:00 2001
From: Michael Williamson <mike@zwobble.org>
Date: Wed, 14 Jun 2023 19:44:57 +0100
Subject: Add LLVM load instruction

---
 .../shedlang/compiler/backends/llvm/ir/LlvmIrSerializer.java |  9 +++++++++
 .../backends/llvm/ir/ast/instructions/LlvmInstruction.java   |  2 +-
 .../compiler/backends/llvm/ir/ast/instructions/LlvmLoad.java | 12 ++++++++++++
 3 files changed, 22 insertions(+), 1 deletion(-)
 create mode 100644 src/main/java/org/shedlang/compiler/backends/llvm/ir/ast/instructions/LlvmLoad.java

(limited to 'src/main/java')

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 ad43e5d8..0c916286 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
@@ -73,6 +73,15 @@ public class LlvmIrSerializer {
                 builder.append(" to ");
                 serializeType(intToPtr.targetType(), builder);
             }
+            case LlvmLoad load -> {
+                serializeVariable(load.target(), builder);
+                builder.append(" = load ");
+                serializeType(load.type(), builder);
+                builder.append(", ");
+                serializeType(LlvmTypes.pointer(load.type()), builder);
+                builder.append(" ");
+                serializeOperand(load.pointer(), builder);
+            }
             case LlvmStore store -> {
                 builder.append("store ");
                 serializeType(store.type(), builder);
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 c452e1d7..cc316ca0 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, LlvmIntToPtr, LlvmStore {
+public sealed interface LlvmInstruction permits LlvmAdd, LlvmCall, LlvmGetElementPtr, LlvmIntToPtr, LlvmLoad, LlvmStore {
 }
diff --git a/src/main/java/org/shedlang/compiler/backends/llvm/ir/ast/instructions/LlvmLoad.java b/src/main/java/org/shedlang/compiler/backends/llvm/ir/ast/instructions/LlvmLoad.java
new file mode 100644
index 00000000..6ca6ed2f
--- /dev/null
+++ b/src/main/java/org/shedlang/compiler/backends/llvm/ir/ast/instructions/LlvmLoad.java
@@ -0,0 +1,12 @@
+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 LlvmLoad(
+    LlvmVariable target,
+    LlvmType type,
+    LlvmOperand pointer
+) implements LlvmInstruction {
+}
-- 
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