-; RUN: opt -lint -disable-output < %s |& FileCheck %s
+; RUN: opt -basicaa -lint -disable-output < %s 2>&1 | FileCheck %s
target datalayout = "e-p:64:64:64"
declare fastcc void @bar()
+declare void @llvm.stackrestore(i8*)
+declare void @llvm.memcpy.p0i8.p0i8.i64(i8* nocapture, i8* nocapture, i64, i32, i1) nounwind
+declare void @has_sret(i8* sret %p)
+declare void @has_noaliases(i32* noalias %p, i32* %q)
+declare void @one_arg(i32)
+
+@CG = constant i32 7
+@E = external global i8
define i32 @foo() noreturn {
+ %buf = alloca i8
+ %buf2 = alloca {i8, i8}, align 2
; CHECK: Caller and callee calling convention differ
call void @bar()
; CHECK: Null pointer dereference
store i32 0, i32* null
; CHECK: Null pointer dereference
%t = load i32* null
+; CHECK: Undef pointer dereference
+ store i32 0, i32* undef
+; CHECK: Undef pointer dereference
+ %u = load i32* undef
+; CHECK: All-ones pointer dereference
+ store i32 0, i32* inttoptr (i64 -1 to i32*)
+; CHECK: Address one pointer dereference
+ store i32 0, i32* inttoptr (i64 1 to i32*)
+; CHECK: Memory reference address is misaligned
+ store i8 0, i8* %buf, align 2
; CHECK: Memory reference address is misaligned
- %x = inttoptr i32 1 to i32*
- load i32* %x, align 4
+ %gep = getelementptr {i8, i8}* %buf2, i32 0, i32 1
+ store i8 0, i8* %gep, align 2
; CHECK: Division by zero
%sd = sdiv i32 2, 0
; CHECK: Division by zero
%sr = srem i32 2, 0
; CHECK: Division by zero
%ur = urem i32 2, 0
+; CHECK: extractelement index out of range
+ %ee = extractelement <4 x i32> zeroinitializer, i32 4
+; CHECK: insertelement index out of range
+ %ie = insertelement <4 x i32> zeroinitializer, i32 0, i32 4
+; CHECK: Shift count out of range
+ %r = lshr i32 0, 32
+; CHECK: Shift count out of range
+ %q = ashr i32 0, 32
+; CHECK: Shift count out of range
+ %l = shl i32 0, 32
+; CHECK: xor(undef, undef)
+ %xx = xor i32 undef, undef
+; CHECK: sub(undef, undef)
+ %xs = sub i32 undef, undef
+
+; CHECK: Write to read-only memory
+ store i32 8, i32* @CG
+; CHECK: Write to text section
+ store i32 8, i32* bitcast (i32()* @foo to i32*)
+; CHECK: Load from block address
+ %lb = load i32* bitcast (i8* blockaddress(@foo, %next) to i32*)
+; CHECK: Call to block address
+ call void()* bitcast (i8* blockaddress(@foo, %next) to void()*)()
+; CHECK: Undefined behavior: Null pointer dereference
+ call void @llvm.stackrestore(i8* null)
+; CHECK: Undefined behavior: Null pointer dereference
+ call void @has_sret(i8* null)
+; CHECK: Unusual: noalias argument aliases another argument
+ call void @has_noaliases(i32* @CG, i32* @CG)
+; CHECK: Call argument count mismatches callee argument count
+ call void (i32, i32)* bitcast (void (i32)* @one_arg to void (i32, i32)*)(i32 0, i32 0)
+; CHECK: Call argument count mismatches callee argument count
+ call void ()* bitcast (void (i32)* @one_arg to void ()*)()
+; CHECK: Call argument type mismatches callee parameter type
+ call void (float)* bitcast (void (i32)* @one_arg to void (float)*)(float 0.0)
+
+; CHECK: Write to read-only memory
+ 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)
+
+; CHECK: Undefined behavior: Buffer overflow
+ %wider = bitcast i8* %buf to i16*
+ store i16 0, i16* %wider
+; CHECK: Undefined behavior: Buffer overflow
+ %inner = getelementptr {i8, i8}* %buf2, i32 0, i32 1
+ %wider2 = bitcast i8* %inner to i16*
+ store i16 0, i16* %wider2
+; CHECK: Undefined behavior: Buffer overflow
+ %before = getelementptr i8* %buf, i32 -1
+ %wider3 = bitcast i8* %before to i16*
+ store i16 0, i16* %wider3
+
br label %next
next:
%a = alloca i32
; CHECK: Return statement in function with noreturn attribute
ret i32 0
+
+foo:
+; CHECK-NOT: Undefined behavior: Buffer overflow
+; CHECK-NOT: Memory reference address is misaligned
+ %e = bitcast i8* @E to i64*
+ store i64 0, i64* %e
+ %z = add i32 0, 0
+; CHECK: unreachable immediately preceded by instruction without side effects
+ unreachable
+}
+
+; CHECK: Unnamed function with non-local linkage
+define void @0() nounwind {
+ ret void
+}
+
+; CHECK: va_start called in a non-varargs function
+declare void @llvm.va_start(i8*)
+define void @not_vararg(i8* %p) nounwind {
+ call void @llvm.va_start(i8* %p)
+ ret void
+}
+
+; CHECK: Undefined behavior: Branch to non-blockaddress
+define void @use_indbr() {
+ indirectbr i8* bitcast (i32()* @foo to i8*), [label %block]
+block:
+ unreachable
+}
+
+; CHECK: Undefined behavior: Call with "tail" keyword references alloca
+declare void @tailcallee(i8*)
+define void @use_tail(i8* %valist) {
+ %t = alloca i8
+ tail call void @tailcallee(i8* %t)
+ ret void
+}
+
+; CHECK: Unusual: Returning alloca value
+define i8* @return_local(i32 %n, i32 %m) {
+ %t = alloca i8, i32 %n
+ %s = getelementptr i8* %t, i32 %m
+ ret i8* %s
+}
+
+; CHECK: Unusual: Returning alloca value
+define i32* @return_obscured_local() {
+entry:
+ %retval = alloca i32*
+ %x = alloca i32
+ store i32* %x, i32** %retval
+ br label %next
+next:
+ %t0 = load i32** %retval
+ %t1 = insertvalue { i32, i32, i32* } zeroinitializer, i32* %t0, 2
+ %t2 = extractvalue { i32, i32, i32* } %t1, 2
+ br label %exit
+exit:
+ %t3 = phi i32* [ %t2, %next ]
+ %t4 = bitcast i32* %t3 to i32*
+ %t5 = ptrtoint i32* %t4 to i64
+ %t6 = add i64 %t5, 0
+ %t7 = inttoptr i64 %t6 to i32*
+ ret i32* %t7
+}
+
+; CHECK: Undefined behavior: Undef pointer dereference
+define i32* @self_reference() {
+entry:
+ unreachable
+exit:
+ %t3 = phi i32* [ %t4, %exit ]
+ %t4 = bitcast i32* %t3 to i32*
+ %x = load volatile i32* %t3
+ br label %exit
+}
+
+; CHECK: Call return type mismatches callee return type
+%struct = type { double, double }
+declare i32 @nonstruct_callee() nounwind
+define void @struct_caller() nounwind {
+entry:
+ call %struct bitcast (i32 ()* @foo to %struct ()*)()
+
+ ; CHECK: Undefined behavior: indirectbr with no destinations
+ indirectbr i8* null, []
}