ir

src/ir/print.test.zig

@@ -0,0 +1,89 @@
+// Tests for print.zig
+const std = @import("std");
+const types = @import("types.zig");
+const inst_mod = @import("inst.zig");
+const mod_mod = @import("module.zig");
+const print_mod = @import("print.zig");
+
+const TypeId = types.TypeId;
+const Ref = inst_mod.Ref;
+const BlockId = inst_mod.BlockId;
+const FuncId = inst_mod.FuncId;
+const Function = inst_mod.Function;
+const Module = mod_mod.Module;
+const Builder = mod_mod.Builder;
+
+test "print simple add function" {
+    const alloc = std.testing.allocator;
+    var module = Module.init(alloc);
+    defer module.deinit();
+
+    var b = Builder.init(&module);
+
+    const name_add = module.types.internString("add");
+    const name_a = module.types.internString("a");
+    const name_b = module.types.internString("b");
+    const name_entry = module.types.internString("entry");
+
+    const params = &[_]Function.Param{
+        .{ .name = name_a, .ty = .s64 },
+        .{ .name = name_b, .ty = .s64 },
+    };
+    _ = b.beginFunction(name_add, params, .s64);
+    const entry = b.appendBlock(name_entry, &.{});
+    b.switchToBlock(entry);
+
+    const a_ref = b.constInt(10, .s64);
+    const b_ref = b.constInt(20, .s64);
+    const sum = b.add(a_ref, b_ref, .s64);
+    b.ret(sum, .s64);
+    b.finalize();
+
+    var aw = std.Io.Writer.Allocating.init(alloc);
+    try print_mod.printModule(&module, &aw.writer);
+    var result = aw.writer.toArrayList();
+    defer result.deinit(alloc);
+
+    const output = result.items;
+    try std.testing.expect(std.mem.indexOf(u8, output, "func @add(a: s64, b: s64) -> s64") != null);
+    try std.testing.expect(std.mem.indexOf(u8, output, "entry:") != null);
+    try std.testing.expect(std.mem.indexOf(u8, output, "const 10 : s64") != null);
+    try std.testing.expect(std.mem.indexOf(u8, output, "add %0, %1 : s64") != null);
+    try std.testing.expect(std.mem.indexOf(u8, output, "ret %2") != null);
+}
+
+test "print conditional branch" {
+    const alloc = std.testing.allocator;
+    var module = Module.init(alloc);
+    defer module.deinit();
+
+    var b = Builder.init(&module);
+
+    _ = b.beginFunction(module.types.internString("test"), &.{}, .s32);
+    const entry = b.appendBlock(module.types.internString("entry"), &.{});
+    const then_bb = b.appendBlock(module.types.internString("then"), &.{});
+    const else_bb = b.appendBlock(module.types.internString("else"), &.{});
+
+    b.switchToBlock(entry);
+    const cond = b.constBool(true);
+    b.condBr(cond, then_bb, &.{}, else_bb, &.{});
+
+    b.switchToBlock(then_bb);
+    const v1 = b.constInt(1, .s32);
+    b.ret(v1, .s32);
+
+    b.switchToBlock(else_bb);
+    const v2 = b.constInt(0, .s32);
+    b.ret(v2, .s32);
+    b.finalize();
+
+    var aw = std.Io.Writer.Allocating.init(alloc);
+    try print_mod.printModule(&module, &aw.writer);
+    var result = aw.writer.toArrayList();
+    defer result.deinit(alloc);
+
+    const output = result.items;
+    try std.testing.expect(std.mem.indexOf(u8, output, "cond_br %0, bb1, bb2") != null);
+    try std.testing.expect(std.mem.indexOf(u8, output, "then:") != null);
+    try std.testing.expect(std.mem.indexOf(u8, output, "else:") != null);
+}