Initial support for some Thumb2 instructions.
Patch by Viktor Kutuzov and Anton Korzh from Access Softek, Inc.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73622 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/CodeGen/ARM/thumb2-add.ll b/test/CodeGen/ARM/thumb2-add.ll
new file mode 100644
index 0000000..d4f408f
--- /dev/null
+++ b/test/CodeGen/ARM/thumb2-add.ll
@@ -0,0 +1,50 @@
+; RUN: llvm-as < %s | llc -march=thumb -mattr=+thumb2 | grep add | grep #255
+; RUN: llvm-as < %s | llc -march=thumb -mattr=+thumb2 | grep add | grep #256
+; RUN: llvm-as < %s | llc -march=thumb -mattr=+thumb2 | grep add | grep #257
+; RUN: llvm-as < %s | llc -march=thumb -mattr=+thumb2 | grep add | grep #4094
+; RUN: llvm-as < %s | llc -march=thumb -mattr=+thumb2 | grep add | grep #4095
+; RUN: llvm-as < %s | llc -march=thumb -mattr=+thumb2 | grep add | grep #4096
+; RUN: llvm-as < %s | llc -march=thumb -mattr=+thumb2 | grep add
+; RUN: llvm-as < %s | llc -march=thumb -mattr=+thumb2 | grep add | grep lsl | grep #8
+
+define i32 @t2ADDrc_255(i32 %lhs) {
+    %Rd = add i32 %lhs, 255;
+    ret i32 %Rd
+}
+
+define i32 @t2ADDrc_256(i32 %lhs) {
+    %Rd = add i32 %lhs, 256;
+    ret i32 %Rd
+}
+
+define i32 @t2ADDrc_257(i32 %lhs) {
+    %Rd = add i32 %lhs, 257;
+    ret i32 %Rd
+}
+
+define i32 @t2ADDrc_4094(i32 %lhs) {
+    %Rd = add i32 %lhs, 4094;
+    ret i32 %Rd
+}
+
+define i32 @t2ADDrc_4095(i32 %lhs) {
+    %Rd = add i32 %lhs, 4095;
+    ret i32 %Rd
+}
+
+define i32 @t2ADDrc_4096(i32 %lhs) {
+    %Rd = add i32 %lhs, 4096;
+    ret i32 %Rd
+}
+
+define i32 @t2ADDrr(i32 %lhs, i32 %rhs) {
+    %Rd = add i32 %lhs, %rhs;
+    ret i32 %Rd
+}
+
+define i32 @t2ADDrs(i32 %lhs, i32 %rhs) {
+    %tmp = shl i32 %rhs, 8
+    %Rd = add i32 %lhs, %tmp;
+    ret i32 %Rd
+}
+