Add all of the data stream intrinsics and instructions. woo

[oota-llvm.git] / lib / Target / README.txt

diff --git a/lib/Target/README.txt b/lib/Target/README.txt
index 6ac8e9e858c503efc337199e35f8adfff4af701b..23503517c0721f6504bf59867ecfe9a652028ce1 100644 (file)
--- a/lib/Target/README.txt
+++ b/lib/Target/README.txt
@@ -154,3 +154,21 @@ where c1/c2 are constants.
 For packed types, TargetData.cpp::getTypeInfo() returns alignment that is equal
 to the type size. It works but can be overly conservative as the alignment of
 specific packed types are target dependent.
+
+//===---------------------------------------------------------------------===//
+
+We should add 'unaligned load/store' nodes, and produce them from code like
+this:
+
+v4sf example(float *P) {
+  return (v4sf){P[0], P[1], P[2], P[3] };
+}
+
+//===---------------------------------------------------------------------===//
+
+We should constant fold packed type casts at the LLVM level, regardless of the
+cast.  Currently we cannot fold some casts because we don't have TargetData
+information in the constant folder, so we don't know the endianness of the 
+target!
+
+//===---------------------------------------------------------------------===//