IPSCCP is missing stuff.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84725 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Target/README.txt b/lib/Target/README.txt
index 89ea9d0afc42c49460c280bda16f04d6340bd587..aec8fd0505ee156ffc352f6c27af4eb069cc1f8a 100644 (file)
--- a/lib/Target/README.txt
+++ b/lib/Target/README.txt
@@ -1644,3 +1644,10 @@ Instcombine should be able to optimize away the loads (and thus the globals).
 See also PR4973
 
 //===---------------------------------------------------------------------===//
+
+IPSCCP is propagating elements of first class aggregates, but is not propagating
+the entire aggregate itself.  This leads it to miss opportunities, for example
+in test/Transforms/SCCP/ipsccp-basic.ll:test5b.
+
+//===---------------------------------------------------------------------===//
+