add a README.txt

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29814 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Target/ARM/README.txt b/lib/Target/ARM/README.txt
new file mode 100644 (file)
index 0000000..7d612d0
--- /dev/null
+++ b/lib/Target/ARM/README.txt
@@ -0,0 +1,9 @@
+//===---------------------------------------------------------------------===//
+// Random ideas for the ARM backend.
+//===---------------------------------------------------------------------===//
+
+Consider implementing a select with two conditional moves:
+
+cmp x, y
+moveq dst, a
+movne dst, b