[llvm-commits] [llvm] r85824 - in /llvm/trunk/lib/Target/ARM: ARMISelLowering.cpp ARMInstrInfo.td ARMInstrThumb.td ARMInstrThumb2.td

[Bob Wilson]

Author: bwilson
Date: Mon Nov  2 14:59:23 2009
New Revision: 85824

URL: http://llvm.org/viewvc/llvm-project?rev=85824&view=rev
Log:
Put BlockAddresses into ARM constant pools.

Modified:
    llvm/trunk/lib/Target/ARM/ARMISelLowering.cpp
    llvm/trunk/lib/Target/ARM/ARMInstrInfo.td
    llvm/trunk/lib/Target/ARM/ARMInstrThumb.td
    llvm/trunk/lib/Target/ARM/ARMInstrThumb2.td

Modified: llvm/trunk/lib/Target/ARM/ARMISelLowering.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/ARM/ARMISelLowering.cpp?rev=85824&r1=85823&r2=85824&view=diff

==============================================================================
--- llvm/trunk/lib/Target/ARM/ARMISelLowering.cpp (original)
+++ llvm/trunk/lib/Target/ARM/ARMISelLowering.cpp Mon Nov  2 14:59:23 2009
@@ -1209,9 +1209,26 @@
 
 SDValue ARMTargetLowering::LowerBlockAddress(SDValue Op, SelectionDAG &DAG) {
   DebugLoc DL = Op.getDebugLoc();
+  EVT PtrVT = getPointerTy();
   BlockAddress *BA = cast<BlockAddressSDNode>(Op)->getBlockAddress();
-  SDValue Result = DAG.getBlockAddress(BA, DL, /*isTarget=*/true);
-  return DAG.getNode(ARMISD::Wrapper, DL, getPointerTy(), Result);
+  Reloc::Model RelocM = getTargetMachine().getRelocationModel();
+  SDValue CPAddr;
+  if (RelocM == Reloc::Static) {
+    CPAddr = DAG.getTargetConstantPool(BA, PtrVT, 4);
+  } else {
+    unsigned PCAdj = Subtarget->isThumb() ? 4 : 8;
+    ARMConstantPoolValue *CPV = new ARMConstantPoolValue(BA, ARMPCLabelIndex,
+                                                         ARMCP::CPBlockAddress,
+                                                         PCAdj);
+    CPAddr = DAG.getTargetConstantPool(CPV, PtrVT, 4);
+  }
+  CPAddr = DAG.getNode(ARMISD::Wrapper, DL, PtrVT, CPAddr);
+  SDValue Result = DAG.getLoad(PtrVT, DL, DAG.getEntryNode(), CPAddr,
+                               PseudoSourceValue::getConstantPool(), 0);
+  if (RelocM == Reloc::Static)
+    return Result;
+  SDValue PICLabel = DAG.getConstant(ARMPCLabelIndex++, MVT::i32);
+  return DAG.getNode(ARMISD::PIC_ADD, DL, PtrVT, Result, PICLabel);
 }
 
 // Lower ISD::GlobalTLSAddress using the "general dynamic" model

Modified: llvm/trunk/lib/Target/ARM/ARMInstrInfo.td
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/ARM/ARMInstrInfo.td?rev=85824&r1=85823&r2=85824&view=diff

==============================================================================
--- llvm/trunk/lib/Target/ARM/ARMInstrInfo.td (original)
+++ llvm/trunk/lib/Target/ARM/ARMInstrInfo.td Mon Nov  2 14:59:23 2009
@@ -1607,7 +1607,6 @@
 // ConstantPool, GlobalAddress, and JumpTable
 def : ARMPat<(ARMWrapper  tglobaladdr :$dst), (LEApcrel tglobaladdr :$dst)>;
 def : ARMPat<(ARMWrapper  tconstpool  :$dst), (LEApcrel tconstpool  :$dst)>;
-def : ARMPat<(ARMWrapper  tblockaddress:$dst), (LEApcrel tblockaddress:$dst)>;
 def : ARMPat<(ARMWrapperJT tjumptable:$dst, imm:$id),
              (LEApcrelJT tjumptable:$dst, imm:$id)>;
 

Modified: llvm/trunk/lib/Target/ARM/ARMInstrThumb.td
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/ARM/ARMInstrThumb.td?rev=85824&r1=85823&r2=85824&view=diff

==============================================================================
--- llvm/trunk/lib/Target/ARM/ARMInstrThumb.td (original)
+++ llvm/trunk/lib/Target/ARM/ARMInstrThumb.td Mon Nov  2 14:59:23 2009
@@ -685,7 +685,6 @@
 // ConstantPool, GlobalAddress
 def : T1Pat<(ARMWrapper  tglobaladdr :$dst), (tLEApcrel tglobaladdr :$dst)>;
 def : T1Pat<(ARMWrapper  tconstpool  :$dst), (tLEApcrel tconstpool  :$dst)>;
-def : T1Pat<(ARMWrapper  tblockaddress:$dst), (tLEApcrel tblockaddress:$dst)>;
 
 // JumpTable
 def : T1Pat<(ARMWrapperJT tjumptable:$dst, imm:$id),

Modified: llvm/trunk/lib/Target/ARM/ARMInstrThumb2.td
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/ARM/ARMInstrThumb2.td?rev=85824&r1=85823&r2=85824&view=diff

==============================================================================
--- llvm/trunk/lib/Target/ARM/ARMInstrThumb2.td (original)
+++ llvm/trunk/lib/Target/ARM/ARMInstrThumb2.td Mon Nov  2 14:59:23 2009
@@ -1169,7 +1169,6 @@
 // ConstantPool, GlobalAddress, and JumpTable
 def : T2Pat<(ARMWrapper  tglobaladdr :$dst), (t2LEApcrel tglobaladdr :$dst)>;
 def : T2Pat<(ARMWrapper  tconstpool  :$dst), (t2LEApcrel tconstpool  :$dst)>;
-def : T2Pat<(ARMWrapper  tblockaddress:$dst), (t2LEApcrel tblockaddress:$dst)>;
 def : T2Pat<(ARMWrapperJT tjumptable:$dst, imm:$id),
             (t2LEApcrelJT tjumptable:$dst, imm:$id)>;