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Dereferenceable, dereferenceable_or_null metadata for loads

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Summary:
Introduce dereferenceable, dereferenceable_or_null metadata for loads
with the same semantic as corresponding attributes.

This patch depends on http://reviews.llvm.org/D9253

Patch by Artur Pilipenko!

Reviewers: hfinkel, sanjoy, reames

Reviewed By: sanjoy, reames

Subscribers: llvm-commits

Differential Revision: http://reviews.llvm.org/D9365

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@237720 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Sanjoy Das
2015-05-19 20:10:19 +00:00
parent 041ab65fcd
commit 4d88c3ebad
6 changed files with 215 additions and 5 deletions
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13
lib/IR/LLVMContext.cpp
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@@ -88,11 +88,22 @@ LLVMContext::LLVMContext() : pImpl(new LLVMContextImpl(*this)) {
"mem_parallel_loop_access kind id drifted");
(void)MemParallelLoopAccessID;
// Create the 'nonnull' metadata kind.
unsigned NonNullID = getMDKindID("nonnull");
assert(NonNullID == MD_nonnull && "nonnull kind id drifted");
(void)NonNullID;
// Create the 'dereferenceable' metadata kind.
unsigned DereferenceableID = getMDKindID("dereferenceable");
assert(DereferenceableID == MD_dereferenceable &&
"dereferenceable kind id drifted");
(void)DereferenceableID;
// Create the 'dereferenceable_or_null' metadata kind.
unsigned DereferenceableOrNullID = getMDKindID("dereferenceable_or_null");
assert(DereferenceableOrNullID == MD_dereferenceable_or_null &&
"dereferenceable_or_null kind id drifted");
(void)DereferenceableOrNullID;
}
LLVMContext::~LLVMContext() { delete pImpl; }