From d1b3da621bf5134d304d02177a2c6ff912b0d18e Mon Sep 17 00:00:00 2001
From: Evan Cheng <evan.cheng@apple.com>
Date: Fri, 25 Jul 2008 00:55:17 +0000
Subject: [PATCH] Teach ARM isLegalAddressingMode to handle unknown type
 without crashing. This fixes pr2589.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@54004 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/Target/ARM/ARMISelLowering.cpp              | 2 +-
 test/CodeGen/ARM/2008-07-24-CodeGenPrepCrash.ll | 9 +++++++++
 2 files changed, 10 insertions(+), 1 deletion(-)
 create mode 100644 test/CodeGen/ARM/2008-07-24-CodeGenPrepCrash.ll

diff --git a/lib/Target/ARM/ARMISelLowering.cpp b/lib/Target/ARM/ARMISelLowering.cpp
index 15c225aebe7..afc7ebc4c91 100644
--- a/lib/Target/ARM/ARMISelLowering.cpp
+++ b/lib/Target/ARM/ARMISelLowering.cpp
@@ -1598,7 +1598,7 @@ static bool isLegalAddressImmediate(int64_t V, MVT VT,
 /// by AM is legal for this target, for a load/store of the specified type.
 bool ARMTargetLowering::isLegalAddressingMode(const AddrMode &AM, 
                                               const Type *Ty) const {
-  if (!isLegalAddressImmediate(AM.BaseOffs, getValueType(Ty), Subtarget))
+  if (!isLegalAddressImmediate(AM.BaseOffs, getValueType(Ty, true), Subtarget))
     return false;
   
   // Can never fold addr of global into load/store.
diff --git a/test/CodeGen/ARM/2008-07-24-CodeGenPrepCrash.ll b/test/CodeGen/ARM/2008-07-24-CodeGenPrepCrash.ll
new file mode 100644
index 00000000000..6ea75eb5c79
--- /dev/null
+++ b/test/CodeGen/ARM/2008-07-24-CodeGenPrepCrash.ll
@@ -0,0 +1,9 @@
+; RUN: llvm-as < %s | llc -march=arm
+; PR2589
+
+define void @main({ i32 }*) {
+entry:
+	%sret1 = alloca { i32 }		; <{ i32 }*> [#uses=1]
+	load { i32 }* %sret1		; <{ i32 }>:1 [#uses=0]
+	ret void
+}