From 57477cd2005e78b70d8409d422327b23eb71737a Mon Sep 17 00:00:00 2001
From: Pierre <pierre.ducroquet@people-doc.com>
Date: Fri, 2 Feb 2018 09:23:56 +0100
Subject: [PATCH 3/8] Add LLVM4 support in llvmjit_inline.cpp

---
 src/backend/jit/llvm/llvmjit_inline.cpp | 36 +++++++++++++++++++++++++++++++--
 1 file changed, 34 insertions(+), 2 deletions(-)

diff --git a/src/backend/jit/llvm/llvmjit_inline.cpp b/src/backend/jit/llvm/llvmjit_inline.cpp
index 7d0d18b43d..4fa0e5ab64 100644
--- a/src/backend/jit/llvm/llvmjit_inline.cpp
+++ b/src/backend/jit/llvm/llvmjit_inline.cpp
@@ -100,6 +100,13 @@ llvm_inline(LLVMModuleRef M)
 	llvm_execute_inline_plan(mod, globalsToInline.get());
 }

+#if LLVM_VERSION_MAJOR < 5
+bool operator!(const llvm::ValueInfo &vi) {
+	return !(  (vi.Kind == llvm::ValueInfo::VI_GUID && vi.TheValue.Id)
+		|| (vi.Kind == llvm::ValueInfo::VI_Value && vi.TheValue.GV));
+}
+#endif
+
 /*
  * Build information necessary for inlining external function references in
  * mod.
@@ -146,7 +153,14 @@ llvm_build_inline_plan(llvm::Module *mod)
 		if (threshold == -1)
 			continue;

+#if LLVM_VERSION_MAJOR > 4
 		llvm::ValueInfo funcVI = llvm_index->getValueInfo(funcGUID);
+#else
+		const llvm::const_gvsummary_iterator &I = llvm_index->findGlobalValueSummaryList(funcGUID);
+		if (I == llvm_index->end())
+			continue;
+		llvm::ValueInfo funcVI = llvm::ValueInfo(I->first);
+#endif

 		/* if index doesn't know function, we don't have a body, continue */
 		if (!funcVI)
@@ -157,7 +171,12 @@ llvm_build_inline_plan(llvm::Module *mod)
 		 * look up module(s), check if function actually is defined (there
 		 * could be hash conflicts).
 		 */
+#if LLVM_VERSION_MAJOR > 4
 		for (const auto &gvs : funcVI.getSummaryList())
+#else
+		auto it_gvs = llvm_index->findGlobalValueSummaryList(funcVI.getGUID());
+		for (const auto &gvs: it_gvs->second)
+#endif
 		{
 			const llvm::FunctionSummary *fs;
 			llvm::StringRef modPath = gvs->modulePath();
@@ -318,9 +337,14 @@ llvm_execute_inline_plan(llvm::Module *mod, ImportMapTy *globalsToInline)

 		}

+#if LLVM_VERSION_MAJOR > 4
+#define IRMOVE_PARAMS , /*IsPerformingImport=*/false
+#else
+#define IRMOVE_PARAMS , /*LinkModuleInlineAsm=*/false, /*IsPerformingImport=*/false
+#endif
 		if (Mover.move(std::move(importMod), GlobalsToImport.getArrayRef(),
-					   [](llvm::GlobalValue &, llvm::IRMover::ValueAdder) {},
-					   /*IsPerformingImport=*/false))
+					   [](llvm::GlobalValue &, llvm::IRMover::ValueAdder) {}
+					   IRMOVE_PARAMS))
 			elog(ERROR, "function import failed with linker error");
 	}
 }
@@ -619,9 +643,17 @@ llvm_load_index(void)
 				elog(ERROR, "failed to open %s: %s", subpath,
 					 EC.message().c_str());
 			llvm::MemoryBufferRef ref(*MBOrErr.get().get());
+#if LLVM_VERSION_MAJOR > 4
 			llvm::Error e = llvm::readModuleSummaryIndex(ref, *index, 0);
 			if (e)
 				elog(ERROR, "could not load summary at %s", subpath);
+#else
+			std::unique_ptr<llvm::ModuleSummaryIndex> subindex = std::move(llvm::getModuleSummaryIndex(ref).get());
+			if (!subindex)
+				elog(ERROR, "could not load summary at %s", subpath);
+			else
+				index->mergeFrom(std::move(subindex), 0);
+#endif
 		}
 	}

-- 
2.16.1