X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=test%2FOther%2Flint.ll;h=78bbbe9e6fa6e5a983c951fb47f71da49a9e4b10;hb=5d9450f92f559bec20ef2ce253ab7bdf5e75216b;hp=d0d3c7e1863cd184717dfbb5e763a29fcccfc846;hpb=292fc87fe2f1611e7c83a61796ab71db6a0f7d97;p=oota-llvm.git

diff --git a/test/Other/lint.ll b/test/Other/lint.ll
index d0d3c7e1863..78bbbe9e6fa 100644
--- a/test/Other/lint.ll
+++ b/test/Other/lint.ll
@@ -1,12 +1,19 @@
-; 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
@@ -17,9 +24,15 @@ define i32 @foo() noreturn {
   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
-  %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
@@ -53,6 +66,31 @@ define i32 @foo() noreturn {
   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
 
@@ -63,6 +101,10 @@ 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
@@ -87,20 +129,60 @@ block:
   unreachable
 }
 
-; CHECK: Undefined behavior: Call with "tail" keyword references alloca or va_arg
-; CHECK: Undefined behavior: Call with "tail" keyword references alloca or va_arg
+; 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)
-  %s = va_arg i8* %valist, i8*
-  tail call void @tailcallee(i8* %s)
   ret void
 }
 
-; CHECK: Unusual: Returning alloca or va_arg value
+; 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, []
+}