1 ; RUN: opt -lint -disable-output < %s |& FileCheck %s
2 target datalayout = "e-p:64:64:64"
4 declare fastcc void @bar()
5 declare void @llvm.stackrestore(i8*)
6 declare void @llvm.memcpy.p0i8.p0i8.i64(i8* nocapture, i8* nocapture, i64, i32, i1) nounwind
10 define i32 @foo() noreturn {
11 ; CHECK: Caller and callee calling convention differ
13 ; CHECK: Null pointer dereference
14 store i32 0, i32* null
15 ; CHECK: Null pointer dereference
17 ; CHECK: Undef pointer dereference
18 store i32 0, i32* undef
19 ; CHECK: Undef pointer dereference
21 ; CHECK: Memory reference address is misaligned
22 %x = inttoptr i32 1 to i32*
24 ; CHECK: Division by zero
26 ; CHECK: Division by zero
28 ; CHECK: Division by zero
30 ; CHECK: Division by zero
32 ; CHECK: extractelement index out of range
33 %ee = extractelement <4 x i32> zeroinitializer, i32 4
34 ; CHECK: insertelement index out of range
35 %ie = insertelement <4 x i32> zeroinitializer, i32 0, i32 4
36 ; CHECK: Shift count out of range
38 ; CHECK: Shift count out of range
40 ; CHECK: Shift count out of range
42 ; CHECK: xor(undef, undef)
43 %xx = xor i32 undef, undef
44 ; CHECK: sub(undef, undef)
45 %xs = sub i32 undef, undef
47 ; CHECK: Write to read-only memory
49 ; CHECK: Write to text section
50 store i32 8, i32* bitcast (i32()* @foo to i32*)
51 ; CHECK: Load from block address
52 %lb = load i32* bitcast (i8* blockaddress(@foo, %next) to i32*)
53 ; CHECK: Call to block address
54 call void()* bitcast (i8* blockaddress(@foo, %next) to void()*)()
55 ; CHECK: Undefined behavior: Null pointer dereference
56 call void @llvm.stackrestore(i8* null)
58 ; CHECK: Write to read-only memory
59 call void @llvm.memcpy.p0i8.p0i8.i64(i8* bitcast (i32* @CG to i8*), i8* bitcast (i32* @CG to i8*), i64 1, i32 1, i1 0)
64 ; CHECK: Static alloca outside of entry block
66 ; CHECK: Return statement in function with noreturn attribute
71 ; CHECK: unreachable immediately preceded by instruction without side effects
75 ; CHECK: Unnamed function with non-local linkage
76 define void @0() nounwind {
80 ; CHECK: va_start called in a non-varargs function
81 declare void @llvm.va_start(i8*)
82 define void @not_vararg(i8* %p) nounwind {
83 call void @llvm.va_start(i8* %p)
87 ; CHECK: Undefined behavior: Branch to non-blockaddress
88 define void @use_indbr() {
89 indirectbr i8* bitcast (i32()* @foo to i8*), [label %block]
94 ; CHECK: Undefined behavior: Call with "tail" keyword references alloca
95 declare void @tailcallee(i8*)
96 define void @use_tail(i8* %valist) {
98 tail call void @tailcallee(i8* %t)
102 ; CHECK: Unusual: Returning alloca value
103 define i8* @return_local(i32 %n, i32 %m) {
104 %t = alloca i8, i32 %n
105 %s = getelementptr i8* %t, i32 %m
109 ; CHECK: Unusual: Returning alloca value
110 define i32* @return_obscured_local() {
112 %retval = alloca i32*
114 store i32* %x, i32** %retval
117 %t0 = load i32** %retval
118 %t1 = insertvalue { i32, i32, i32* } zeroinitializer, i32* %t0, 2
119 %t2 = extractvalue { i32, i32, i32* } %t1, 2
122 %t3 = phi i32* [ %t2, %next ]
123 %t4 = bitcast i32* %t3 to i32*
124 %t5 = ptrtoint i32* %t4 to i64
126 %t7 = inttoptr i64 %t6 to i32*
130 ; CHECK: Undefined behavior: Undef pointer dereference
131 define i32* @self_reference() {
135 %t3 = phi i32* [ %t4, %exit ]
136 %t4 = bitcast i32* %t3 to i32*
137 %x = volatile load i32* %t3