add a README.txt

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29814 91177308-0d34-0410-b5e6-96231b3b80d8
xdress · Aug 22, 2006 · f4d4005 · f4d4005
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diff --git a/lib/Target/ARM/README.txt b/lib/Target/ARM/README.txt
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+//===---------------------------------------------------------------------===//
+// Random ideas for the ARM backend.
+//===---------------------------------------------------------------------===//
+
+Consider implementing a select with two conditional moves:
+
+cmp x, y
+moveq dst, a
+movne dst, b