New test cases for bit accurate integers developed by Guoling Han.

llvm-svn: 33259
diff --git a/llvm/test/Integer/alignment_bt.ll b/llvm/test/Integer/alignment_bt.ll
new file mode 100644
index 0000000..d74d929
--- /dev/null
+++ b/llvm/test/Integer/alignment_bt.ll
@@ -0,0 +1,21 @@
+; RUN: llvm-as %s -o - | llvm-dis > %t1.ll
+; RUN: llvm-as %t1.ll -o - | llvm-dis > %t2.ll
+; RUN: diff %t1.ll %t2.ll
+
+%X = global i19 4, align 16
+
+define i19 *%test() align 32 {
+	%X = alloca i19, align 4
+	%Y = alloca i51, i32 42, align 16
+	%Z = alloca i32, align 0
+	ret i19 *%X
+}
+
+define i19 *%test2() {
+	%X = malloc i19, align 4
+	%Y = malloc i51, i32 42, align 16
+	%Z = malloc i32, align 0
+	ret i19 *%X
+}
+
+