From 206f65c04964a23a6072b2a6de3bf6496bb1a884 Mon Sep 17 00:00:00 2001
From: Sanjoy Das <sanjoy@playingwithpointers.com>
Date: Mon, 24 Apr 2017 20:12:10 +0000
Subject: [LIR] Obey non-integral pointer semantics

Summary: See http://llvm.org/docs/LangRef.html#non-integral-pointer-type

Reviewers: haicheng

Reviewed By: haicheng

Subscribers: mcrosier, mzolotukhin, llvm-commits

Differential Revision: https://reviews.llvm.org/D32196

llvm-svn: 301238
---
 llvm/lib/Transforms/Scalar/LoopIdiomRecognize.cpp | 5 +++++
 1 file changed, 5 insertions(+)

(limited to 'llvm/lib')

diff --git a/llvm/lib/Transforms/Scalar/LoopIdiomRecognize.cpp b/llvm/lib/Transforms/Scalar/LoopIdiomRecognize.cpp
index 946d85d7360..5042fc18d7c 100644
--- a/llvm/lib/Transforms/Scalar/LoopIdiomRecognize.cpp
+++ b/llvm/lib/Transforms/Scalar/LoopIdiomRecognize.cpp
@@ -345,6 +345,11 @@ bool LoopIdiomRecognize::isLegalStore(StoreInst *SI, bool &ForMemset,
   if (!SI->isSimple())
     return false;
 
+  // Don't convert stores of non-integral pointer types to memsets (which stores
+  // integers).
+  if (DL->isNonIntegralPointerType(SI->getValueOperand()->getType()))
+    return false;
+
   // Avoid merging nontemporal stores.
   if (SI->getMetadata(LLVMContext::MD_nontemporal))
     return false;
-- 
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