Add Thumb2 pkhbt / pkhtb.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@74895 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/CodeGen/Thumb2/thumb2-pack.ll b/test/CodeGen/Thumb2/thumb2-pack.ll
new file mode 100644
index 0000000..dd7729e
--- /dev/null
+++ b/test/CodeGen/Thumb2/thumb2-pack.ll
@@ -0,0 +1,73 @@
+; RUN: llvm-as < %s | llc -march=thumb -mattr=+thumb2 | \
+; RUN:   grep pkhbt | count 5
+; RUN: llvm-as < %s | llc -march=thumb -mattr=+thumb2 | \
+; RUN:   grep pkhtb | count 4
+
+define i32 @test1(i32 %X, i32 %Y) {
+	%tmp1 = and i32 %X, 65535		; <i32> [#uses=1]
+	%tmp4 = shl i32 %Y, 16		; <i32> [#uses=1]
+	%tmp5 = or i32 %tmp4, %tmp1		; <i32> [#uses=1]
+	ret i32 %tmp5
+}
+
+define i32 @test1a(i32 %X, i32 %Y) {
+	%tmp19 = and i32 %X, 65535		; <i32> [#uses=1]
+	%tmp37 = shl i32 %Y, 16		; <i32> [#uses=1]
+	%tmp5 = or i32 %tmp37, %tmp19		; <i32> [#uses=1]
+	ret i32 %tmp5
+}
+
+define i32 @test2(i32 %X, i32 %Y) {
+	%tmp1 = and i32 %X, 65535		; <i32> [#uses=1]
+	%tmp3 = shl i32 %Y, 12		; <i32> [#uses=1]
+	%tmp4 = and i32 %tmp3, -65536		; <i32> [#uses=1]
+	%tmp57 = or i32 %tmp4, %tmp1		; <i32> [#uses=1]
+	ret i32 %tmp57
+}
+
+define i32 @test3(i32 %X, i32 %Y) {
+	%tmp19 = and i32 %X, 65535		; <i32> [#uses=1]
+	%tmp37 = shl i32 %Y, 18		; <i32> [#uses=1]
+	%tmp5 = or i32 %tmp37, %tmp19		; <i32> [#uses=1]
+	ret i32 %tmp5
+}
+
+define i32 @test4(i32 %X, i32 %Y) {
+	%tmp1 = and i32 %X, 65535		; <i32> [#uses=1]
+	%tmp3 = and i32 %Y, -65536		; <i32> [#uses=1]
+	%tmp46 = or i32 %tmp3, %tmp1		; <i32> [#uses=1]
+	ret i32 %tmp46
+}
+
+define i32 @test5(i32 %X, i32 %Y) {
+	%tmp17 = and i32 %X, -65536		; <i32> [#uses=1]
+	%tmp2 = bitcast i32 %Y to i32		; <i32> [#uses=1]
+	%tmp4 = lshr i32 %tmp2, 16		; <i32> [#uses=2]
+	%tmp5 = or i32 %tmp4, %tmp17		; <i32> [#uses=1]
+	ret i32 %tmp5
+}
+
+define i32 @test5a(i32 %X, i32 %Y) {
+	%tmp110 = and i32 %X, -65536		; <i32> [#uses=1]
+	%tmp37 = lshr i32 %Y, 16		; <i32> [#uses=1]
+	%tmp39 = bitcast i32 %tmp37 to i32		; <i32> [#uses=1]
+	%tmp5 = or i32 %tmp39, %tmp110		; <i32> [#uses=1]
+	ret i32 %tmp5
+}
+
+define i32 @test6(i32 %X, i32 %Y) {
+	%tmp1 = and i32 %X, -65536		; <i32> [#uses=1]
+	%tmp37 = lshr i32 %Y, 12		; <i32> [#uses=1]
+	%tmp38 = bitcast i32 %tmp37 to i32		; <i32> [#uses=1]
+	%tmp4 = and i32 %tmp38, 65535		; <i32> [#uses=1]
+	%tmp59 = or i32 %tmp4, %tmp1		; <i32> [#uses=1]
+	ret i32 %tmp59
+}
+
+define i32 @test7(i32 %X, i32 %Y) {
+	%tmp1 = and i32 %X, -65536		; <i32> [#uses=1]
+	%tmp3 = ashr i32 %Y, 18		; <i32> [#uses=1]
+	%tmp4 = and i32 %tmp3, 65535		; <i32> [#uses=1]
+	%tmp57 = or i32 %tmp4, %tmp1		; <i32> [#uses=1]
+	ret i32 %tmp57
+}