-; 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 @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
; CHECK: Address one pointer dereference
store i32 0, i32* inttoptr (i64 1 to i32*)
; CHECK: Memory reference address is misaligned
- %x = inttoptr i32 1 to i32*
- load i32* %x, align 4
+ store i8 0, i8* %buf, align 2
+; CHECK: Memory reference address is misaligned
+ %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
; 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:
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
exit:
%t3 = phi i32* [ %t4, %exit ]
%t4 = bitcast i32* %t3 to i32*
- %x = volatile load i32* %t3
+ %x = load volatile i32* %t3
br label %exit
}