Add poison as LLVM operand

5 files changed, 22 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 4508f90b..6a315272 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
@@ -248,6 +248,10 @@ public class LlvmIrSerializer {
                 writer.append("null");
             }
 
+            case LlvmOperandPoison _ -> {
+                writer.append("poison");
+            }
+
             case LlvmOperandStructure structure -> {
                 writer.append("{");
                 forEachInterspersed(
diff --git a/src/main/java/org/shedlang/compiler/backends/llvm/ir/ast/operands/LlvmOperand.java b/src/main/java/org/shedlang/compiler/backends/llvm/ir/ast/operands/LlvmOperand.java
index 624e6dc0..9ada3b12 100644
--- a/src/main/java/org/shedlang/compiler/backends/llvm/ir/ast/operands/LlvmOperand.java
+++ b/src/main/java/org/shedlang/compiler/backends/llvm/ir/ast/operands/LlvmOperand.java
@@ -1,4 +1,4 @@
 package org.shedlang.compiler.backends.llvm.ir.ast.operands;
 
-public sealed interface LlvmOperand permits LlvmOperandArray, LlvmOperandGetElementPtr, LlvmOperandInt, LlvmOperandNull, LlvmOperandPtrToInt, LlvmOperandStructure, LlvmVariable {
+public sealed interface LlvmOperand permits LlvmOperandArray, LlvmOperandGetElementPtr, LlvmOperandInt, LlvmOperandNull, LlvmOperandPoison, LlvmOperandPtrToInt, LlvmOperandStructure, LlvmVariable {
 }
diff --git a/src/main/java/org/shedlang/compiler/backends/llvm/ir/ast/operands/LlvmOperandPoison.java b/src/main/java/org/shedlang/compiler/backends/llvm/ir/ast/operands/LlvmOperandPoison.java
new file mode 100644
index 00000000..b34cb6a5
--- /dev/null
+++ b/src/main/java/org/shedlang/compiler/backends/llvm/ir/ast/operands/LlvmOperandPoison.java
@@ -0,0 +1,4 @@
+package org.shedlang.compiler.backends.llvm.ir.ast.operands;
+
+public record LlvmOperandPoison() implements LlvmOperand {
+}
diff --git a/src/test/java/org/shedlang/compiler/backends/llvm/ir/LlvmIrSerializerOperandsTests.java b/src/test/java/org/shedlang/compiler/backends/llvm/ir/LlvmIrSerializerOperandsTests.java
index 0139599e..ba4ecb93 100644
--- a/src/test/java/org/shedlang/compiler/backends/llvm/ir/LlvmIrSerializerOperandsTests.java
+++ b/src/test/java/org/shedlang/compiler/backends/llvm/ir/LlvmIrSerializerOperandsTests.java
@@ -82,6 +82,15 @@ public class LlvmIrSerializerOperandsTests {
     }
 
     @Test
+    public void poisonIsSerializedAsPoison() throws IOException {
+        var operand = LlvmIr.operandPoison();
+
+        var result = serializeToString(operand, LlvmIrSerializer::serializeOperand);
+
+        assertThat(result, equalTo("poison"));
+    }
+
+    @Test
     public void arrayIsSerializedAsTypedOperandsInArray() throws IOException {
         var operand = LlvmIr.operandArray(
             LlvmTypes.INT_64,
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 08a5b706..b1aef1d8 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
@@ -159,6 +159,10 @@ public class LlvmIr {
         return new LlvmOperandNull();
     }
 
+    public static LlvmOperandPoison operandPoison() {
+        return new LlvmOperandPoison();
+    }
+
     public static LlvmOperand operandPtrToInt(
         LlvmOperand operand,
         LlvmType destinationType