mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-08-23 02:29:18 +00:00
source of false positives due to globals being declared in a header with some kind of incomplete (small) type, but the actual definition being bigger. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164912 91177308-0d34-0410-b5e6-96231b3b80d8
189 lines
5.7 KiB
LLVM
189 lines
5.7 KiB
LLVM
; 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
|
|
%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
|
|
%ud = udiv 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:
|
|
; CHECK: Static alloca outside of entry block
|
|
%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, []
|
|
}
|