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Add InaccessibleMemOnly and inaccessibleMemOrArgMemOnly attributes

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Summary:
This patch introduces two new function attributes 

InaccessibleMemOnly: This attribute indicates that the function may only access memory that is not accessible by the program/IR being compiled. This is a weaker form of ReadNone.
inaccessibleMemOrArgMemOnly: This attribute indicates that the function may only access memory that is either not accessible by the program/IR being compiled, or is pointed to by its pointer arguments. This is a weaker form of  ArgMemOnly

Test cases have been updated. This revision uses this (https://github.com/llvm-mirror/llvm/commit/d001932f3a8aa1ebd1555162fdce365f011bc292) as reference.

Reviewers: jmolloy, hfinkel

Subscribers: reames, joker.eph, llvm-commits

Differential Revision: http://reviews.llvm.org/D15499

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255778 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Vaivaswatha Nagaraj
2015-12-16 16:16:19 +00:00
parent f75627aa1c
commit ee7970e77e
19 changed files with 105 additions and 14 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 (50)
; CHECK: llvm-dis{{(\.EXE|\.exe)?}}: error: Unknown attribute kind (52)
; invalid.ll.bc has an invalid attribute number.
; The test checks that LLVM reports the error and doesn't access freed memory