Tests.

test/libsolidity/memoryGuardTests/dialectString/constructor_safe_deploy_unsafe.sol

@@ -0,0 +1,17 @@
+contract C {
+    constructor() {
+        uint256 x;
+        assembly { x := 0 }
+        f();
+    }
+    function f() internal pure {
+        assembly "evmasm" ("memory-safe") { mstore(0, 0) }
+        assembly ("memory-safe") { mstore(0, 0) }
+    }
+    function g() public pure {
+        assembly { mstore(0, 0) }
+    }
+}
+// ----
+// :C(creation) true
+// :C(runtime) false

test/libsolidity/memoryGuardTests/dialectString/constructor_unsafe_deploy_safe.sol

@@ -0,0 +1,16 @@
+contract C {
+    constructor() {
+        uint256 x;
+        assembly { x := 0 }
+        f();
+    }
+    function f() internal pure {
+        assembly { mstore(0, 0) }
+    }
+    function g() public pure {
+        assembly "evmasm" ("memory-safe") { mstore(0, 0) }
+    }
+}
+// ----
+// :C(creation) false
+// :C(runtime) true

test/libsolidity/memoryGuardTests/dialectString/free_function.sol

@@ -0,0 +1,28 @@
+function safe() pure returns (uint256 x) {
+    assembly { x := 42 }
+    assembly "evmasm" ("memory-safe") { mstore(0, 0) }
+}
+function unsafe() pure returns (uint256 x) {
+    assembly { pop(mload(0)) }
+}
+contract C {
+    constructor() {
+        unsafe();
+    }
+    function f() public pure {
+        safe();
+    }
+}
+contract D {
+    constructor() {
+        safe();
+    }
+    function f() public pure {
+        unsafe();
+    }
+}
+// ----
+// :C(creation) false
+// :C(runtime) true
+// :D(creation) true
+// :D(runtime) false

test/libsolidity/memoryGuardTests/dialectString/multiple_contracts.sol

@@ -0,0 +1,23 @@
+contract C {
+    constructor(uint256 x) {
+        assembly { x := 4 }
+        assembly "evmasm" ("memory-safe") { mstore(0, 0) }
+    }
+    function f() public pure {
+        assembly { mstore(0,0) }
+    }
+}
+contract D {
+    constructor() {
+        assembly { mstore(0,0) }
+    }
+    function f(uint256 x) public pure {
+        assembly { x := 4 }
+        assembly ("memory-safe") { mstore(0, 0) }
+    }
+}
+// ----
+// :C(creation) true
+// :C(runtime) false
+// :D(creation) false
+// :D(runtime) true

test/libsolidity/memoryGuardTests/dialectString/safe_and_unmarked_empty.sol

@@ -0,0 +1,9 @@
+contract C {
+    function f() external pure {
+        assembly "evmasm" ("memory-safe") {}
+        assembly {}
+    }
+}
+// ----
+// :C(creation) true
+// :C(runtime) true

test/libsolidity/memoryGuardTests/dialectString/safe_and_unmarked_unsafe.sol

@@ -0,0 +1,9 @@
+contract C {
+    function f() external pure {
+        assembly "evmasm" ("memory-safe") {}
+        assembly { mstore(0,0) }
+    }
+}
+// ----
+// :C(creation) true
+// :C(runtime) false

test/libsolidity/memoryGuardTests/dialectString/stub.sol

@@ -0,0 +1,4 @@
+contract C {}
+// ----
+// :C(creation) true
+// :C(runtime) true

test/libsolidity/syntaxTests/inlineAssembly/assembly_dialect_duplicate_option.sol

@@ -0,0 +1,5 @@
+function f() pure {
+    assembly "evmasm" ("memory-safe", "memory-safe") {}
+}
+// ----
+// SyntaxError 7026: (24-75): Inline assembly marked memory-safe multiple times.

test/libsolidity/syntaxTests/inlineAssembly/assembly_dialect_invalid_options.sol

@@ -0,0 +1,8 @@
+function f() pure {
+    assembly "evmasm" ("a", "b", "c", "c") {}
+}
+// ----
+// Warning 4430: (24-65): Unknown inline assembly flag: "a"
+// Warning 4430: (24-65): Unknown inline assembly flag: "b"
+// Warning 4430: (24-65): Unknown inline assembly flag: "c"
+// Warning 4430: (24-65): Unknown inline assembly flag: "c"

test/libsolidity/syntaxTests/inlineAssembly/assembly_dialect_leading_space.sol

@@ -0,0 +1,5 @@
+function f() pure {
+    assembly " evmasm" {}
+}
+// ----
+// ParserError 4531: (33-42): Only "evmasm" supported.

test/libsolidity/syntaxTests/inlineAssembly/assembly_duplicate_option.sol

@@ -0,0 +1,5 @@
+function f() pure {
+    assembly ("memory-safe", "memory-safe") {}
+}
+// ----
+// SyntaxError 7026: (24-66): Inline assembly marked memory-safe multiple times.

test/libsolidity/syntaxTests/inlineAssembly/assembly_empty_option_list.sol

@@ -0,0 +1,5 @@
+function f() pure {
+    assembly () {}
+}
+// ----
+// ParserError 2314: (34-35): Expected 'StringLiteral' but got ')'

test/libsolidity/syntaxTests/inlineAssembly/assembly_empty_option_list_dialect.sol

@@ -0,0 +1,5 @@
+function f() pure {
+    assembly "evmasm" () {}
+}
+// ----
+// ParserError 2314: (43-44): Expected 'StringLiteral' but got ')'

test/libsolidity/syntaxTests/inlineAssembly/assembly_flags_delimiter.sol

@@ -0,0 +1,5 @@
+function f() pure {
+	assembly ("a" "b") {}
+}
+// ----
+// ParserError 2314: (35-38): Expected ')' but got 'StringLiteral'

test/libsolidity/syntaxTests/inlineAssembly/assembly_invalid_options.sol

@@ -0,0 +1,8 @@
+function f() pure {
+    assembly ("a", "b", "c", "c") {}
+}
+// ----
+// Warning 4430: (24-56): Unknown inline assembly flag: "a"
+// Warning 4430: (24-56): Unknown inline assembly flag: "b"
+// Warning 4430: (24-56): Unknown inline assembly flag: "c"
+// Warning 4430: (24-56): Unknown inline assembly flag: "c"

test/libsolidity/syntaxTests/inlineAssembly/memory_safe_dialect_string_and_comment.sol

@@ -0,0 +1,7 @@
+function f() pure {
+    /// @solidity memory-safe-assembly
+    assembly "evmasm" ("memory-safe") {
+    }
+}
+// ----
+// Warning 8544: (63-104): Inline assembly marked as memory safe using both a NatSpec tag and an assembly flag. If you are not concerned with backwards compatibility, only use the assembly flag, otherwise only use the NatSpec tag.

test/libsolidity/syntaxTests/inlineAssembly/memory_safe_in_dialect_string.sol

@@ -0,0 +1,3 @@
+function f() pure {
+    assembly "evmasm" ("memory-safe") {}
+}