From c4a0bd08af209a647f272f9d061bc6b266c06f93 Mon Sep 17 00:00:00 2001
From: Michael Williamson <mike@zwobble.org>
Date: Wed, 27 Dec 2023 23:59:04 +0000
Subject: Parameterise LlvmBackend with target

---
 .../org/shedlang/compiler/backends/Backends.java   |  3 ++-
 .../compiler/backends/llvm/LlvmBackend.java        | 24 +++++++++++++++++-----
 .../compiler/backends/llvm/LlvmTarget.java         | 16 +++++++++++++++
 3 files changed, 37 insertions(+), 6 deletions(-)
 create mode 100644 src/main/java/org/shedlang/compiler/backends/llvm/LlvmTarget.java

(limited to 'src/main/java')

diff --git a/src/main/java/org/shedlang/compiler/backends/Backends.java b/src/main/java/org/shedlang/compiler/backends/Backends.java
index be0a512d..f1d0abc4 100644
--- a/src/main/java/org/shedlang/compiler/backends/Backends.java
+++ b/src/main/java/org/shedlang/compiler/backends/Backends.java
@@ -15,7 +15,8 @@ public class Backends {
 
     private static final OrderedPMap<String, Backend> BACKENDS =
         Stream.of(
-            LlvmBackend.INSTANCE,
+            LlvmBackend.AMD64,
+            LlvmBackend.I686,
             PatioTextBackend.INSTANCE,
             ShidTextBackend.INSTANCE,
             WasmBackend.WASM32,
diff --git a/src/main/java/org/shedlang/compiler/backends/llvm/LlvmBackend.java b/src/main/java/org/shedlang/compiler/backends/llvm/LlvmBackend.java
index f3de3755..89b48b5c 100644
--- a/src/main/java/org/shedlang/compiler/backends/llvm/LlvmBackend.java
+++ b/src/main/java/org/shedlang/compiler/backends/llvm/LlvmBackend.java
@@ -33,14 +33,22 @@ import static org.shedlang.compiler.backends.llvm.LlvmCompiler.compileLlvmModule
 import static org.shedlang.compiler.util.processes.ProcessRunner.runInheritIo;
 
 public class LlvmBackend implements Backend {
-    public static final LlvmBackend INSTANCE = new LlvmBackend();
+    public static final LlvmBackend AMD64 = new LlvmBackend(LlvmTarget.AMD64);
+    public static final LlvmBackend I686 = new LlvmBackend(LlvmTarget.I686);
 
-    private LlvmBackend() {
+    public static LlvmBackend forTarget(LlvmTarget target) {
+        return new LlvmBackend(target);
+    }
+
+    private final LlvmTarget target;
+
+    private LlvmBackend(LlvmTarget target) {
+        this.target = target;
     }
 
     @Override
     public String targetName() {
-        return "amd64";
+        return this.target.targetName();
     }
 
     @Override
@@ -85,7 +93,7 @@ public class LlvmBackend implements Backend {
         }
     }
 
-    public static void link(List<Path> inputs, Path target) throws ProcessError, InterruptedException {
+    public void link(List<Path> inputs, Path target) throws ProcessError, InterruptedException {
         var clangArgs = new ArrayList<String>();
         clangArgs.add("clang");
 
@@ -96,7 +104,13 @@ public class LlvmBackend implements Backend {
             clangArgs.add(input.toString());
         }
 
-        clangArgs.add(ShedCompilerFiles.getRoot().resolve("runtime/target/amd64/libshed.a").toString());
+        clangArgs.add(
+            ShedCompilerFiles.getRoot()
+                .resolve("runtime/target")
+                .resolve(this.target.targetName())
+                .resolve("libshed.a")
+                .toString()
+        );
 
         runInheritIo(clangArgs);
     }
diff --git a/src/main/java/org/shedlang/compiler/backends/llvm/LlvmTarget.java b/src/main/java/org/shedlang/compiler/backends/llvm/LlvmTarget.java
new file mode 100644
index 00000000..ee0ddb18
--- /dev/null
+++ b/src/main/java/org/shedlang/compiler/backends/llvm/LlvmTarget.java
@@ -0,0 +1,16 @@
+package org.shedlang.compiler.backends.llvm;
+
+public enum LlvmTarget {
+    AMD64("amd64"),
+    I686("i686");
+
+    private final String targetName;
+
+    LlvmTarget(String targetName) {
+        this.targetName = targetName;
+    }
+
+    public String targetName() {
+        return targetName;
+    }
+}
-- 
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