From: Marek Olšák <marek.ol...@amd.com>

Not sure if this is the right way to do it, but it seems to work.
---
 src/gallium/auxiliary/gallivm/lp_bld_misc.cpp | 9 +++++++++
 src/gallium/auxiliary/gallivm/lp_bld_misc.h   | 3 +++
 2 files changed, 12 insertions(+)

diff --git a/src/gallium/auxiliary/gallivm/lp_bld_misc.cpp 
b/src/gallium/auxiliary/gallivm/lp_bld_misc.cpp
index 23ef3ed..d9b62b8 100644
--- a/src/gallium/auxiliary/gallivm/lp_bld_misc.cpp
+++ b/src/gallium/auxiliary/gallivm/lp_bld_misc.cpp
@@ -697,3 +697,12 @@ lp_free_memory_manager(LLVMMCJITMemoryManagerRef memorymgr)
 {
    delete reinterpret_cast<BaseMemoryManager*>(memorymgr);
 }
+
+extern "C" void
+lp_add_attr_dereferenceable(LLVMValueRef val, uint64_t bytes)
+{
+   llvm::Argument *A = llvm::unwrap<llvm::Argument>(val);
+   llvm::AttrBuilder B;
+   B.addDereferenceableAttr(bytes);
+   A->addAttr(llvm::AttributeSet::get(A->getContext(), A->getArgNo() + 1,  B));
+}
diff --git a/src/gallium/auxiliary/gallivm/lp_bld_misc.h 
b/src/gallium/auxiliary/gallivm/lp_bld_misc.h
index d038e3b..c127c48 100644
--- a/src/gallium/auxiliary/gallivm/lp_bld_misc.h
+++ b/src/gallium/auxiliary/gallivm/lp_bld_misc.h
@@ -73,6 +73,9 @@ lp_get_default_memory_manager();
 extern void
 lp_free_memory_manager(LLVMMCJITMemoryManagerRef memorymgr);
 
+extern void
+lp_add_attr_dereferenceable(LLVMValueRef val, uint64_t bytes);
+
 #ifdef __cplusplus
 }
 #endif
-- 
2.7.4

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