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Add writeonly IR attribute

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Summary:
This complements the earlier addition of IntrWriteMem and IntrWriteArgMem
LLVM intrinsic properties, see D18291.

Also start using the attribute for memset, memcpy, and memmove intrinsics,
and remove their special-casing in BasicAliasAnalysis.

Reviewers: reames, joker.eph

Subscribers: joker.eph, llvm-commits

Differential Revision: http://reviews.llvm.org/D18714

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@274485 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Nicolai Haehnle
2016-07-04 08:01:29 +00:00
parent 061feda889
commit b07f540456
30 changed files with 195 additions and 49 deletions
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test/Bitcode/invalid.ll
+1 -1
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@@ -1,6 +1,6 @@
; RUN: not llvm-dis < %s.bc 2>&1 | FileCheck %s
; CHECK: llvm-dis{{(\.EXE|\.exe)?}}: error: Unknown attribute kind (52)
; CHECK: llvm-dis{{(\.EXE|\.exe)?}}: error: Unknown attribute kind (63)
; invalid.ll.bc has an invalid attribute number.
; The test checks that LLVM reports the error and doesn't access freed memory