Update ARM DAGtoDAG for matching UBFX instruction for unsigned bitfield
extraction. This fixes PR5998.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102144 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/CodeGen/ARM/bfx.ll b/test/CodeGen/ARM/bfx.ll
new file mode 100644
index 0000000..fcca191
--- /dev/null
+++ b/test/CodeGen/ARM/bfx.ll
@@ -0,0 +1,28 @@
+; RUN: llc < %s -march=arm -mattr=+v7a | FileCheck %s
+
+define i32 @sbfx1(i32 %a) {
+; CHECK: sbfx1
+; CHECK: sbfx r0, r0, #7, #11
+ %t1 = lshr i32 %a, 7
+ %t2 = trunc i32 %t1 to i11
+ %t3 = sext i11 %t2 to i32
+ ret i32 %t3
+}
+
+define i32 @ubfx1(i32 %a) {
+; CHECK: ubfx1
+; CHECK: ubfx r0, r0, #7, #11
+ %t1 = lshr i32 %a, 7
+ %t2 = trunc i32 %t1 to i11
+ %t3 = zext i11 %t2 to i32
+ ret i32 %t3
+}
+
+define i32 @ubfx2(i32 %a) {
+; CHECK: ubfx2
+; CHECK: ubfx r0, r0, #7, #11
+ %t1 = lshr i32 %a, 7
+ %t2 = and i32 %t1, 2047
+ ret i32 %t2
+}
+