New testcase

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30378 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/test/CodeGen/X86/and-or-fold.ll b/test/CodeGen/X86/and-or-fold.ll
new file mode 100644 (file)
index 0000000..51a3ac6
--- /dev/null
+++ b/test/CodeGen/X86/and-or-fold.ll
@@ -0,0 +1,13 @@
+; RUN: llvm-as < %s | llc -march=x86 | grep and | wc -l | grep 1
+
+; The dag combiner should fold together (x&127)|(y&16711680) -> (x|y)&c1
+; in this case.
+uint %test6(uint %x, ushort %y) {
+        %tmp1 = cast ushort %y to uint
+        %tmp2 = and uint %tmp1, 127             ; <uint> [#uses=1]
+        %tmp4 = shl uint %x, ubyte 16           ; <uint> [#uses=1]
+        %tmp5 = and uint %tmp4, 16711680                ; <uint> [#uses=1]
+        %tmp6 = or uint %tmp2, %tmp5            ; <uint> [#uses=1]
+        ret uint %tmp6
+}
+