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Use address-taken to disambiguate global variable and indirect memops.
Major steps include: 1). introduces a not-addr-taken bit-field in GlobalVariable 2). GlobalOpt pass sets "not-address-taken" if it proves a global varirable dosen't have its address taken. 3). AA use this info for disambiguation. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@193251 91177308-0d34-0410-b5e6-96231b3b80d8
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@@ -1,5 +1,5 @@
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; RUN: opt < %s -globalopt -S > %t
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; RUN: grep "@Y = internal unnamed_addr global \[3 x [%]struct.X\] zeroinitializer" %t
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; RUN: grep "@Y = internal unnamed_addr global notaddrtaken \[3 x [%]struct.X\] zeroinitializer" %t
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; RUN: grep load %t | count 6
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; RUN: grep "add i32 [%]a, [%]b" %t | count 3
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