ARM: Fix incorrect pack pattern

[oota-llvm.git] / test / CodeGen / ARM / pack.ll

diff --git a/test/CodeGen/ARM/pack.ll b/test/CodeGen/ARM/pack.ll
index 90151767b91952bc8159bb85332007cb14f88344..b94414328cadd7de4bd56edb85b1343087abeb08 100644 (file)
--- a/test/CodeGen/ARM/pack.ll
+++ b/test/CodeGen/ARM/pack.ll
@@ -78,11 +78,24 @@ define i32 @test7(i32 %X, i32 %Y) {
        ret i32 %tmp57
 }
 
+; Arithmetic and logic right shift does not have the same semantics if shifting
+; by more than 16 in this context.
+
 ; CHECK: test8
-; CHECK: pkhtb   r0, r0, r1, asr #22
+; CHECK-NOT: pkhtb   r0, r0, r1, asr #22
 define i32 @test8(i32 %X, i32 %Y) {
        %tmp1 = and i32 %X, -65536
        %tmp3 = lshr i32 %Y, 22
        %tmp57 = or i32 %tmp3, %tmp1
        ret i32 %tmp57
 }
+
+; CHECK: test9:
+; CHECK: pkhtb r0, r0, r1, asr #16
+define i32 @test9(i32 %src1, i32 %src2) {
+entry:
+    %tmp = and i32 %src1, -65536
+    %tmp2 = lshr i32 %src2, 16
+    %tmp3 = or i32 %tmp, %tmp2
+    ret i32 %tmp3
+}