-; 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
store i32 0, i32* null
; CHECK: Null pointer dereference
- %t = load i32* null
+ %t = load i32, i32* null
; CHECK: Undef pointer dereference
store i32 0, i32* undef
; CHECK: Undef pointer dereference
- %u = load i32* undef
+ %u = load i32, 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
- %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}, {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 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*)
+ %lb = load i32, i32* bitcast (i8* blockaddress(@foo, %next) to i32*)
; CHECK: Call to block address
- call void()* bitcast (i8* blockaddress(@foo, %next) to void()*)()
+ 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
; 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)
+ 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 ()*)()
+ 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)
+ 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}, {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, 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
; CHECK: Unusual: Returning alloca value
define i8* @return_local(i32 %n, i32 %m) {
%t = alloca i8, i32 %n
- %s = getelementptr i8* %t, i32 %m
+ %s = getelementptr i8, i8* %t, i32 %m
ret i8* %s
}
store i32* %x, i32** %retval
br label %next
next:
- %t0 = load i32** %retval
+ %t0 = load i32*, 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* [ %t4, %exit ]
%t4 = bitcast i32* %t3 to i32*
- %x = volatile load i32* %t3
+ %x = load volatile i32, i32* %t3
br label %exit
}
define void @struct_caller() nounwind {
entry:
call %struct bitcast (i32 ()* @foo to %struct ()*)()
- ret void
+
+ ; CHECK: Undefined behavior: indirectbr with no destinations
+ indirectbr i8* null, []
}