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Add a dereferenceable attribute

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This attribute indicates that the parameter or return pointer is
dereferenceable. Practically speaking, loads from such a pointer within the
associated byte range are safe to speculatively execute. Such pointer
parameters are common in source languages (C++ references, for example).

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@213385 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Hal Finkel
2014-07-18 15:51:28 +00:00
parent a11bf68f6c
commit 11af4b49b2
22 changed files with 388 additions and 18 deletions
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2
lib/Bitcode/Writer/BitcodeWriter.cpp
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@ -201,6 +201,8 @@ static uint64_t getAttrKindEncoding(Attribute::AttrKind Kind) {
return bitc::ATTR_KIND_NON_LAZY_BIND;
case Attribute::NonNull:
return bitc::ATTR_KIND_NON_NULL;
case Attribute::Dereferenceable:
return bitc::ATTR_KIND_DEREFERENCEABLE;
case Attribute::NoRedZone:
return bitc::ATTR_KIND_NO_RED_ZONE;
case Attribute::NoReturn: