From c4bd2b43b293827b7ec880a10a6e491f0cc94211 Mon Sep 17 00:00:00 2001
From: Dimitry Andric <dim@FreeBSD.org>
Date: Sun, 20 Feb 2022 15:39:23 +0100
Subject: Vendor import of llvm-project branch release/13.x
llvmorg-13.0.1-0-g75e33f71c2da.
---
llvm/lib/Transforms/Utils/RelLookupTableConverter.cpp | 4 ++++
1 file changed, 4 insertions(+)
(limited to 'llvm/lib/Transforms/Utils')
diff --git a/llvm/lib/Transforms/Utils/RelLookupTableConverter.cpp b/llvm/lib/Transforms/Utils/RelLookupTableConverter.cpp
index 85e5adaeaf5e..3127432dc6c9 100644
--- a/llvm/lib/Transforms/Utils/RelLookupTableConverter.cpp
+++ b/llvm/lib/Transforms/Utils/RelLookupTableConverter.cpp
@@ -144,6 +144,10 @@ static void convertToRelLookupTable(GlobalVariable &LookupTable) {
Value *Offset =
Builder.CreateShl(Index, ConstantInt::get(IntTy, 2), "reltable.shift");
+ // Insert the call to load.relative instrinsic before LOAD.
+ // GEP might not be immediately followed by a LOAD, like it can be hoisted
+ // outside the loop or another instruction might be inserted them in between.
+ Builder.SetInsertPoint(Load);
Function *LoadRelIntrinsic = llvm::Intrinsic::getDeclaration(
&M, Intrinsic::load_relative, {Index->getType()});
Value *Base = Builder.CreateBitCast(RelLookupTable, Builder.getInt8PtrTy());
--
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