diff --git a/test/libsolidity/syntaxTests/inlineAssembly/invalid/dup_disallowed.sol b/test/libsolidity/syntaxTests/inlineAssembly/invalid/dup_disallowed.sol
new file mode 100644
index 000000000..9d9b35e28
--- /dev/null
+++ b/test/libsolidity/syntaxTests/inlineAssembly/invalid/dup_disallowed.sol
@@ -0,0 +1,43 @@
+contract C {
+    function f() pure public {
+        assembly {
+            dup0()
+            dup1()
+            dup2()
+            dup3()
+            dup4()
+            dup5()
+            dup6()
+            dup7()
+            dup8()
+            dup9()
+            dup10()
+            dup11()
+            dup12()
+            dup13()
+            dup14()
+            dup15()
+            dup16()
+            dup32()
+        }
+    }
+}
+// ----
+// DeclarationError 4619: (75-79): Function not found.
+// DeclarationError 4619: (94-98): Function not found.
+// DeclarationError 4619: (113-117): Function not found.
+// DeclarationError 4619: (132-136): Function not found.
+// DeclarationError 4619: (151-155): Function not found.
+// DeclarationError 4619: (170-174): Function not found.
+// DeclarationError 4619: (189-193): Function not found.
+// DeclarationError 4619: (208-212): Function not found.
+// DeclarationError 4619: (227-231): Function not found.
+// DeclarationError 4619: (246-250): Function not found.
+// DeclarationError 4619: (265-270): Function not found.
+// DeclarationError 4619: (285-290): Function not found.
+// DeclarationError 4619: (305-310): Function not found.
+// DeclarationError 4619: (325-330): Function not found.
+// DeclarationError 4619: (345-350): Function not found.
+// DeclarationError 4619: (365-370): Function not found.
+// DeclarationError 4619: (385-390): Function not found.
+// DeclarationError 4619: (405-410): Function not found.
diff --git a/test/libsolidity/syntaxTests/inlineAssembly/invalid/jumpdest_disallowed.sol b/test/libsolidity/syntaxTests/inlineAssembly/invalid/jumpdest_disallowed.sol
new file mode 100644
index 000000000..7da213776
--- /dev/null
+++ b/test/libsolidity/syntaxTests/inlineAssembly/invalid/jumpdest_disallowed.sol
@@ -0,0 +1,9 @@
+contract C {
+    function f() pure public {
+        assembly {
+            jumpdest()
+        }
+    }
+}
+// ----
+// DeclarationError 4619: (75-83): Function not found.
diff --git a/test/libsolidity/syntaxTests/inlineAssembly/invalid/push_disallowed.sol b/test/libsolidity/syntaxTests/inlineAssembly/invalid/push_disallowed.sol
new file mode 100644
index 000000000..72e3fcd98
--- /dev/null
+++ b/test/libsolidity/syntaxTests/inlineAssembly/invalid/push_disallowed.sol
@@ -0,0 +1,73 @@
+contract C {
+    function f() pure public {
+        assembly {
+            push0()
+            push1()
+            push2()
+            push3()
+            push4()
+            push5()
+            push6()
+            push7()
+            push8()
+            push9()
+            push10()
+            push11()
+            push12()
+            push13()
+            push14()
+            push15()
+            push16()
+            push17()
+            push18()
+            push19()
+            push20()
+            push21()
+            push22()
+            push23()
+            push24()
+            push25()
+            push26()
+            push27()
+            push28()
+            push29()
+            push30()
+            push31()
+            push32()
+        }
+    }
+}
+// ----
+// DeclarationError 4619: (75-80): Function not found.
+// DeclarationError 4619: (95-100): Function not found.
+// DeclarationError 4619: (115-120): Function not found.
+// DeclarationError 4619: (135-140): Function not found.
+// DeclarationError 4619: (155-160): Function not found.
+// DeclarationError 4619: (175-180): Function not found.
+// DeclarationError 4619: (195-200): Function not found.
+// DeclarationError 4619: (215-220): Function not found.
+// DeclarationError 4619: (235-240): Function not found.
+// DeclarationError 4619: (255-260): Function not found.
+// DeclarationError 4619: (275-281): Function not found.
+// DeclarationError 4619: (296-302): Function not found.
+// DeclarationError 4619: (317-323): Function not found.
+// DeclarationError 4619: (338-344): Function not found.
+// DeclarationError 4619: (359-365): Function not found.
+// DeclarationError 4619: (380-386): Function not found.
+// DeclarationError 4619: (401-407): Function not found.
+// DeclarationError 4619: (422-428): Function not found.
+// DeclarationError 4619: (443-449): Function not found.
+// DeclarationError 4619: (464-470): Function not found.
+// DeclarationError 4619: (485-491): Function not found.
+// DeclarationError 4619: (506-512): Function not found.
+// DeclarationError 4619: (527-533): Function not found.
+// DeclarationError 4619: (548-554): Function not found.
+// DeclarationError 4619: (569-575): Function not found.
+// DeclarationError 4619: (590-596): Function not found.
+// DeclarationError 4619: (611-617): Function not found.
+// DeclarationError 4619: (632-638): Function not found.
+// DeclarationError 4619: (653-659): Function not found.
+// DeclarationError 4619: (674-680): Function not found.
+// DeclarationError 4619: (695-701): Function not found.
+// DeclarationError 4619: (716-722): Function not found.
+// DeclarationError 4619: (737-743): Function not found.
diff --git a/test/libsolidity/syntaxTests/inlineAssembly/invalid/swap_disallowed.sol b/test/libsolidity/syntaxTests/inlineAssembly/invalid/swap_disallowed.sol
new file mode 100644
index 000000000..278398218
--- /dev/null
+++ b/test/libsolidity/syntaxTests/inlineAssembly/invalid/swap_disallowed.sol
@@ -0,0 +1,43 @@
+contract C {
+    function f() pure public {
+        assembly {
+            swap0()
+            swap1()
+            swap2()
+            swap3()
+            swap4()
+            swap5()
+            swap6()
+            swap7()
+            swap8()
+            swap9()
+            swap10()
+            swap11()
+            swap12()
+            swap13()
+            swap14()
+            swap15()
+            swap16()
+            swap32()
+        }
+    }
+}
+// ----
+// DeclarationError 4619: (75-80): Function not found.
+// DeclarationError 4619: (95-100): Function not found.
+// DeclarationError 4619: (115-120): Function not found.
+// DeclarationError 4619: (135-140): Function not found.
+// DeclarationError 4619: (155-160): Function not found.
+// DeclarationError 4619: (175-180): Function not found.
+// DeclarationError 4619: (195-200): Function not found.
+// DeclarationError 4619: (215-220): Function not found.
+// DeclarationError 4619: (235-240): Function not found.
+// DeclarationError 4619: (255-260): Function not found.
+// DeclarationError 4619: (275-281): Function not found.
+// DeclarationError 4619: (296-302): Function not found.
+// DeclarationError 4619: (317-323): Function not found.
+// DeclarationError 4619: (338-344): Function not found.
+// DeclarationError 4619: (359-365): Function not found.
+// DeclarationError 4619: (380-386): Function not found.
+// DeclarationError 4619: (401-407): Function not found.
+// DeclarationError 4619: (422-428): Function not found.
diff --git a/test/libyul/yulSyntaxTests/datacopy_shadowing.yul b/test/libyul/yulSyntaxTests/datacopy_shadowing.yul
new file mode 100644
index 000000000..3f14f4722
--- /dev/null
+++ b/test/libyul/yulSyntaxTests/datacopy_shadowing.yul
@@ -0,0 +1,5 @@
+{
+    function datacopy(a, b, c) {}
+}
+// ----
+// ParserError 5568: (15-23): Cannot use builtin function name "datacopy" as identifier name.
diff --git a/test/libyul/yulSyntaxTests/dataoffset_shadowing.yul b/test/libyul/yulSyntaxTests/dataoffset_shadowing.yul
new file mode 100644
index 000000000..fb32fb61c
--- /dev/null
+++ b/test/libyul/yulSyntaxTests/dataoffset_shadowing.yul
@@ -0,0 +1,5 @@
+{
+    function dataoffset(a) -> b {}
+}
+// ----
+// ParserError 5568: (15-25): Cannot use builtin function name "dataoffset" as identifier name.
diff --git a/test/libyul/yulSyntaxTests/datasize_shadowing.yul b/test/libyul/yulSyntaxTests/datasize_shadowing.yul
new file mode 100644
index 000000000..379401754
--- /dev/null
+++ b/test/libyul/yulSyntaxTests/datasize_shadowing.yul
@@ -0,0 +1,5 @@
+{
+    function datasize(a) -> b {}
+}
+// ----
+// ParserError 5568: (15-23): Cannot use builtin function name "datasize" as identifier name.
diff --git a/test/libyul/yulSyntaxTests/invalid/dup_disallowed.yul b/test/libyul/yulSyntaxTests/invalid/dup_disallowed.yul
new file mode 100644
index 000000000..ffcd60c3e
--- /dev/null
+++ b/test/libyul/yulSyntaxTests/invalid/dup_disallowed.yul
@@ -0,0 +1,39 @@
+{
+    dup0()
+    dup1()
+    dup2()
+    dup3()
+    dup4()
+    dup5()
+    dup6()
+    dup7()
+    dup8()
+    dup9()
+    dup10()
+    dup11()
+    dup12()
+    dup13()
+    dup14()
+    dup15()
+    dup16()
+    dup32()
+}
+// ----
+// DeclarationError 4619: (6-10): Function not found.
+// DeclarationError 4619: (17-21): Function not found.
+// DeclarationError 4619: (28-32): Function not found.
+// DeclarationError 4619: (39-43): Function not found.
+// DeclarationError 4619: (50-54): Function not found.
+// DeclarationError 4619: (61-65): Function not found.
+// DeclarationError 4619: (72-76): Function not found.
+// DeclarationError 4619: (83-87): Function not found.
+// DeclarationError 4619: (94-98): Function not found.
+// DeclarationError 4619: (105-109): Function not found.
+// DeclarationError 4619: (116-121): Function not found.
+// DeclarationError 4619: (128-133): Function not found.
+// DeclarationError 4619: (140-145): Function not found.
+// DeclarationError 4619: (152-157): Function not found.
+// DeclarationError 4619: (164-169): Function not found.
+// DeclarationError 4619: (176-181): Function not found.
+// DeclarationError 4619: (188-193): Function not found.
+// DeclarationError 4619: (200-205): Function not found.
diff --git a/test/libyul/yulSyntaxTests/invalid/invalid_octal_number.yul b/test/libyul/yulSyntaxTests/invalid/invalid_octal_number.yul
new file mode 100644
index 000000000..c3b5e02c2
--- /dev/null
+++ b/test/libyul/yulSyntaxTests/invalid/invalid_octal_number.yul
@@ -0,0 +1,5 @@
+{
+    let x := 0100
+}
+// ----
+// ParserError 1856: (15-16): Literal or identifier expected.
diff --git a/test/libyul/yulSyntaxTests/invalid/jump_disallowed.yul b/test/libyul/yulSyntaxTests/invalid/jump_disallowed.yul
new file mode 100644
index 000000000..5ab50a4c6
--- /dev/null
+++ b/test/libyul/yulSyntaxTests/invalid/jump_disallowed.yul
@@ -0,0 +1,5 @@
+{
+    jump(2)
+}
+// ----
+// DeclarationError 4619: (6-10): Function not found.
diff --git a/test/libyul/yulSyntaxTests/invalid/jumpdest_disallowed.yul b/test/libyul/yulSyntaxTests/invalid/jumpdest_disallowed.yul
new file mode 100644
index 000000000..579f34892
--- /dev/null
+++ b/test/libyul/yulSyntaxTests/invalid/jumpdest_disallowed.yul
@@ -0,0 +1,5 @@
+{
+    jumpdest()
+}
+// ----
+// DeclarationError 4619: (6-14): Function not found.
diff --git a/test/libyul/yulSyntaxTests/invalid/jumpi_disallowed.yul b/test/libyul/yulSyntaxTests/invalid/jumpi_disallowed.yul
new file mode 100644
index 000000000..e22a86ce1
--- /dev/null
+++ b/test/libyul/yulSyntaxTests/invalid/jumpi_disallowed.yul
@@ -0,0 +1,5 @@
+{
+    jumpi(2, 1)
+}
+// ----
+// DeclarationError 4619: (6-11): Function not found.
diff --git a/test/libyul/yulSyntaxTests/invalid/label_disallowed.yul b/test/libyul/yulSyntaxTests/invalid/label_disallowed.yul
new file mode 100644
index 000000000..63762bd31
--- /dev/null
+++ b/test/libyul/yulSyntaxTests/invalid/label_disallowed.yul
@@ -0,0 +1,5 @@
+{
+    label:
+}
+// ----
+// ParserError 6913: (11-12): Call or assignment expected.
diff --git a/test/libyul/yulSyntaxTests/invalid/leave_items_on_tack.yul b/test/libyul/yulSyntaxTests/invalid/leave_items_on_tack.yul
new file mode 100644
index 000000000..dca68b7a0
--- /dev/null
+++ b/test/libyul/yulSyntaxTests/invalid/leave_items_on_tack.yul
@@ -0,0 +1,5 @@
+{
+    mload(0)
+}
+// ----
+// TypeError 3083: (6-14): Top-level expressions are not supposed to return values (this expression returns 1 value). Use ``pop()`` or assign them.
diff --git a/test/libyul/yulSyntaxTests/invalid/literals_on_stack_disallowed.yul b/test/libyul/yulSyntaxTests/invalid/literals_on_stack_disallowed.yul
new file mode 100644
index 000000000..f57faf32a
--- /dev/null
+++ b/test/libyul/yulSyntaxTests/invalid/literals_on_stack_disallowed.yul
@@ -0,0 +1,5 @@
+{
+    1
+}
+// ----
+// ParserError 6913: (8-9): Call or assignment expected.
diff --git a/test/libyul/yulSyntaxTests/pc.yul b/test/libyul/yulSyntaxTests/invalid/pc_disallowed.yul
similarity index 100%
rename from test/libyul/yulSyntaxTests/pc.yul
rename to test/libyul/yulSyntaxTests/invalid/pc_disallowed.yul
diff --git a/test/libyul/yulSyntaxTests/invalid/push_disallowed.yul b/test/libyul/yulSyntaxTests/invalid/push_disallowed.yul
new file mode 100644
index 000000000..c863e58c8
--- /dev/null
+++ b/test/libyul/yulSyntaxTests/invalid/push_disallowed.yul
@@ -0,0 +1,69 @@
+{
+    push0()
+    push1()
+    push2()
+    push3()
+    push4()
+    push5()
+    push6()
+    push7()
+    push8()
+    push9()
+    push10()
+    push11()
+    push12()
+    push13()
+    push14()
+    push15()
+    push16()
+    push17()
+    push18()
+    push19()
+    push20()
+    push21()
+    push22()
+    push23()
+    push24()
+    push25()
+    push26()
+    push27()
+    push28()
+    push29()
+    push30()
+    push31()
+    push32()
+}
+// ----
+// DeclarationError 4619: (6-11): Function not found.
+// DeclarationError 4619: (18-23): Function not found.
+// DeclarationError 4619: (30-35): Function not found.
+// DeclarationError 4619: (42-47): Function not found.
+// DeclarationError 4619: (54-59): Function not found.
+// DeclarationError 4619: (66-71): Function not found.
+// DeclarationError 4619: (78-83): Function not found.
+// DeclarationError 4619: (90-95): Function not found.
+// DeclarationError 4619: (102-107): Function not found.
+// DeclarationError 4619: (114-119): Function not found.
+// DeclarationError 4619: (126-132): Function not found.
+// DeclarationError 4619: (139-145): Function not found.
+// DeclarationError 4619: (152-158): Function not found.
+// DeclarationError 4619: (165-171): Function not found.
+// DeclarationError 4619: (178-184): Function not found.
+// DeclarationError 4619: (191-197): Function not found.
+// DeclarationError 4619: (204-210): Function not found.
+// DeclarationError 4619: (217-223): Function not found.
+// DeclarationError 4619: (230-236): Function not found.
+// DeclarationError 4619: (243-249): Function not found.
+// DeclarationError 4619: (256-262): Function not found.
+// DeclarationError 4619: (269-275): Function not found.
+// DeclarationError 4619: (282-288): Function not found.
+// DeclarationError 4619: (295-301): Function not found.
+// DeclarationError 4619: (308-314): Function not found.
+// DeclarationError 4619: (321-327): Function not found.
+// DeclarationError 4619: (334-340): Function not found.
+// DeclarationError 4619: (347-353): Function not found.
+// DeclarationError 4619: (360-366): Function not found.
+// DeclarationError 4619: (373-379): Function not found.
+// DeclarationError 4619: (386-392): Function not found.
+// DeclarationError 4619: (399-405): Function not found.
+// DeclarationError 4619: (412-418): Function not found.
diff --git a/test/libyul/yulSyntaxTests/invalid/swap_disallowed.yul b/test/libyul/yulSyntaxTests/invalid/swap_disallowed.yul
new file mode 100644
index 000000000..4103cab6f
--- /dev/null
+++ b/test/libyul/yulSyntaxTests/invalid/swap_disallowed.yul
@@ -0,0 +1,39 @@
+{
+    swap0()
+    swap1()
+    swap2()
+    swap3()
+    swap4()
+    swap5()
+    swap6()
+    swap7()
+    swap8()
+    swap9()
+    swap10()
+    swap11()
+    swap12()
+    swap13()
+    swap14()
+    swap15()
+    swap16()
+    swap32()
+}
+// ----
+// DeclarationError 4619: (6-11): Function not found.
+// DeclarationError 4619: (18-23): Function not found.
+// DeclarationError 4619: (30-35): Function not found.
+// DeclarationError 4619: (42-47): Function not found.
+// DeclarationError 4619: (54-59): Function not found.
+// DeclarationError 4619: (66-71): Function not found.
+// DeclarationError 4619: (78-83): Function not found.
+// DeclarationError 4619: (90-95): Function not found.
+// DeclarationError 4619: (102-107): Function not found.
+// DeclarationError 4619: (114-119): Function not found.
+// DeclarationError 4619: (126-132): Function not found.
+// DeclarationError 4619: (139-145): Function not found.
+// DeclarationError 4619: (152-158): Function not found.
+// DeclarationError 4619: (165-171): Function not found.
+// DeclarationError 4619: (178-184): Function not found.
+// DeclarationError 4619: (191-197): Function not found.
+// DeclarationError 4619: (204-210): Function not found.
+// DeclarationError 4619: (217-223): Function not found.
diff --git a/test/libyul/yulSyntaxTests/linkersymbol_shadowing.yul b/test/libyul/yulSyntaxTests/linkersymbol_shadowing.yul
new file mode 100644
index 000000000..68ce920e1
--- /dev/null
+++ b/test/libyul/yulSyntaxTests/linkersymbol_shadowing.yul
@@ -0,0 +1,7 @@
+{
+    function linkersymbol(a) {}
+}
+// ====
+// dialect: evm
+// ----
+// ParserError 5568: (15-27): Cannot use builtin function name "linkersymbol" as identifier name.
diff --git a/test/libyul/yulSyntaxTests/loadimmutable_shadowing.yul b/test/libyul/yulSyntaxTests/loadimmutable_shadowing.yul
new file mode 100644
index 000000000..8711d0b17
--- /dev/null
+++ b/test/libyul/yulSyntaxTests/loadimmutable_shadowing.yul
@@ -0,0 +1,7 @@
+{
+    function loadimmutable(a) {}
+}
+// ====
+// dialect: evm
+// ----
+// ParserError 5568: (15-28): Cannot use builtin function name "loadimmutable" as identifier name.
diff --git a/test/libyul/yulSyntaxTests/setimmutable_shadowing.yul b/test/libyul/yulSyntaxTests/setimmutable_shadowing.yul
new file mode 100644
index 000000000..b76a5de9b
--- /dev/null
+++ b/test/libyul/yulSyntaxTests/setimmutable_shadowing.yul
@@ -0,0 +1,7 @@
+{
+    function setimmutable(a, b) {}
+}
+// ====
+// dialect: evm
+// ----
+// ParserError 5568: (15-27): Cannot use builtin function name "setimmutable" as identifier name.