From efce698798e27149e767f7dc2d88f0a29e58f8e4 Mon Sep 17 00:00:00 2001
From: James <85808999+TheGreatSageEqualToHeaven@users.noreply.github.com>
Date: Thu, 4 Apr 2024 14:11:10 +0100
Subject: [PATCH] Add coverage opcode (#30)

---
 Source.lua                              |  2 ++
 tests/Config.h                          |  3 +++
 tests/Conformance/Emulated/Coverage.lua | 23 +++++++++++++++++++++++
 3 files changed, 28 insertions(+)
 create mode 100644 tests/Conformance/Emulated/Coverage.lua

diff --git a/Source.lua b/Source.lua
index 90cd04f..b81fa82 100644
--- a/Source.lua
+++ b/Source.lua
@@ -1109,6 +1109,8 @@ local function luau_load(module, env, luau_settings)
 					pc += inst.E
 				elseif op == 68 then --[[ FASTCALL ]]
 					--[[ Skipped ]]
+				elseif op == 69 then --[[ COVERAGE ]]
+					inst.E += 1
 				elseif op == 70 then --[[ CAPTURE ]]
 					--[[ Handled by CLOSURE ]]
 					error("encountered unhandled CAPTURE")
diff --git a/tests/Config.h b/tests/Config.h
index 6a0d47b..83f8e9b 100644
--- a/tests/Config.h
+++ b/tests/Config.h
@@ -68,6 +68,9 @@ FIU_TESTCASES {
 		"Conformance/utf8",
 		"Conformance/vararg",
 
+		// Emulated Tests
+		"Conformance/Emulated/Coverage",
+
 		// Instruction Specific Tests
 		"Conformance/Instructions/Calls",
 		"Conformance/Instructions/Constants",
diff --git a/tests/Conformance/Emulated/Coverage.lua b/tests/Conformance/Emulated/Coverage.lua
new file mode 100644
index 0000000..fcfbd9a
--- /dev/null
+++ b/tests/Conformance/Emulated/Coverage.lua
@@ -0,0 +1,23 @@
+--!ctx Luau
+
+local ok, compileResult = Luau.compile([[
+print("Hello World!")
+]])
+
+if not ok then
+	error(`Failed to compile, error: {compileResult}`)
+end
+
+local module = Fiu.luau_deserialize(compileResult)
+
+table.insert(module.mainProto.code, 1, {
+	opcode = 69,
+	opname = "COVERAGE",
+	E = 0,
+})
+
+local func, _ = Fiu.luau_load(module, {print = print})
+
+func()
+
+OK()