From: Anton Korobeynikov <asl@math.spbu.ru>
Date: Wed, 23 Sep 2009 19:04:09 +0000 (+0000)
Subject: ARM does not support offset folding (yet). Disable it for now.
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=48e19352840a5f7012493ead894e81a2dbec1778;p=oota-llvm.git

ARM does not support offset folding (yet). Disable it for now.
This fixes PR5031. Unfortunately, there is no small testcase :(

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82643 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/Target/ARM/ARMISelLowering.cpp b/lib/Target/ARM/ARMISelLowering.cpp
index df9f29644b1..a656ef93fe7 100644
--- a/lib/Target/ARM/ARMISelLowering.cpp
+++ b/lib/Target/ARM/ARMISelLowering.cpp
@@ -4073,3 +4073,9 @@ void ARMTargetLowering::LowerAsmOperandForConstraint(SDValue Op,
   return TargetLowering::LowerAsmOperandForConstraint(Op, Constraint, hasMemory,
                                                       Ops, DAG);
 }
+
+bool
+ARMTargetLowering::isOffsetFoldingLegal(const GlobalAddressSDNode *GA) const {
+  // The ARM target isn't yet aware of offsets.
+  return false;
+}
diff --git a/lib/Target/ARM/ARMISelLowering.h b/lib/Target/ARM/ARMISelLowering.h
index 94dcf0d6bc5..7d85f458d8e 100644
--- a/lib/Target/ARM/ARMISelLowering.h
+++ b/lib/Target/ARM/ARMISelLowering.h
@@ -223,6 +223,7 @@ namespace llvm {
     virtual unsigned getFunctionAlignment(const Function *F) const;
 
     bool isShuffleMaskLegal(const SmallVectorImpl<int> &M, EVT VT) const;
+    bool isOffsetFoldingLegal(const GlobalAddressSDNode *GA) const;
   private:
     /// Subtarget - Keep a pointer to the ARMSubtarget around so that we can
     /// make the right decision when generating code for different targets.