X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=test%2FOther%2Flint.ll;h=78bbbe9e6fa6e5a983c951fb47f71da49a9e4b10;hb=7172b38af7ed5d1c1e2c97fadfb0ae0c19aff816;hp=c84f56f8f694dda781c301d60fbfe6e95001b3f9;hpb=49589f0d0e35f643e697ab7ae8a51a530d38b0d8;p=oota-llvm.git

diff --git a/test/Other/lint.ll b/test/Other/lint.ll
index c84f56f8f69..78bbbe9e6fa 100644
--- a/test/Other/lint.ll
+++ b/test/Other/lint.ll
@@ -9,8 +9,11 @@ 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
@@ -26,8 +29,10 @@ define i32 @foo() noreturn {
 ; 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
@@ -75,6 +80,18 @@ define i32 @foo() noreturn {
 ; 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:
@@ -84,6 +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