Expand small memmovs using inline code. Set the X86 threshold for expanding
memmove to a more plausible value, now that it's actually being used.

llvm-svn: 51696
diff --git a/llvm/test/CodeGen/X86/memmove-4.ll b/llvm/test/CodeGen/X86/memmove-4.ll
new file mode 100644
index 0000000..f23c7d5
--- /dev/null
+++ b/llvm/test/CodeGen/X86/memmove-4.ll
@@ -0,0 +1,12 @@
+; RUN: llvm-as < %s | llc | not grep call
+
+target triple = "i686-pc-linux-gnu"
+
+define void @a(i8* %a, i8* %b) nounwind {
+        %tmp2 = bitcast i8* %a to i8*
+        %tmp3 = bitcast i8* %b to i8*
+        tail call void @llvm.memmove.i32( i8* %tmp2, i8* %tmp3, i32 12, i32 4 )
+        ret void
+}
+
+declare void @llvm.memmove.i32(i8*, i8*, i32, i32)