From: Marek Olšák <marek.ol...@amd.com>
Not sure if this is the right way to do it, but it seems to work.
v2: make it a no-op on LLVM <= 3.5
---
src/gallium/auxiliary/gallivm/lp_bld_misc.cpp | 11 +++++++++++
src/gallium/auxiliary/gallivm/lp_bld_misc.h | 3 +++
2 files changed, 14 insertions(+)
diff --git a/src/gallium/auxiliary/gallivm/lp_bld_misc.cpp
b/src/gallium/auxiliary/gallivm/lp_bld_misc.cpp
index 23ef3ed..791a470 100644
--- a/src/gallium/auxiliary/gallivm/lp_bld_misc.cpp
+++ b/src/gallium/auxiliary/gallivm/lp_bld_misc.cpp
@@ -697,3 +697,14 @@ lp_free_memory_manager(LLVMMCJITMemoryManagerRef memorymgr)
{
delete reinterpret_cast<BaseMemoryManager*>(memorymgr);
}
+
+extern "C" void
+lp_add_attr_dereferenceable(LLVMValueRef val, uint64_t bytes)
+{
+#if HAVE_LLVM >= 0x0306
+ 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));
+#endif
+}
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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