[llvm-commits] [llvm] r104862 - in /llvm/trunk: include/llvm/CodeGen/ISDOpcodes.h lib/Target/ARM/ARMISelLowering.cpp lib/Target/ARM/ARMISelLowering.h

[Jim Grosbach]

Author: grosbach
Date: Thu May 27 13:23:48 2010
New Revision: 104862

URL: http://llvm.org/viewvc/llvm-project?rev=104862&view=rev
Log:
add ISD::STACKADDR to get the current stack pointer. Will be used by sjlj EH
to update the jmpbuf in the presence of VLAs.

Modified:
    llvm/trunk/include/llvm/CodeGen/ISDOpcodes.h
    llvm/trunk/lib/Target/ARM/ARMISelLowering.cpp
    llvm/trunk/lib/Target/ARM/ARMISelLowering.h

Modified: llvm/trunk/include/llvm/CodeGen/ISDOpcodes.h
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/include/llvm/CodeGen/ISDOpcodes.h?rev=104862&r1=104861&r2=104862&view=diff
==============================================================================
--- llvm/trunk/include/llvm/CodeGen/ISDOpcodes.h (original)
+++ llvm/trunk/include/llvm/CodeGen/ISDOpcodes.h Thu May 27 13:23:48 2010
@@ -72,6 +72,9 @@
     // parent's frame or return address, and so on.
     FRAMEADDR, RETURNADDR,
 
+    // STACKADDR - The current stack pointer address.
+    STACKADDR,
+
     // FRAME_TO_ARGS_OFFSET - This node represents offset from frame pointer to
     // first (possible) on-stack argument. This is needed for correct stack
     // adjustment during unwind.

Modified: llvm/trunk/lib/Target/ARM/ARMISelLowering.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/ARM/ARMISelLowering.cpp?rev=104862&r1=104861&r2=104862&view=diff
==============================================================================
--- llvm/trunk/lib/Target/ARM/ARMISelLowering.cpp (original)
+++ llvm/trunk/lib/Target/ARM/ARMISelLowering.cpp Thu May 27 13:23:48 2010
@@ -2183,6 +2183,13 @@
   return FrameAddr;
 }
 
+SDValue ARMTargetLowering::LowerSTACKADDR(SDValue Op, SelectionDAG &DAG) const {
+  EVT VT = Op.getValueType();
+  DebugLoc dl = Op.getDebugLoc();  // FIXME probably not meaningful
+  SDValue StackAddr = DAG.getCopyFromReg(DAG.getEntryNode(), dl, ARM::SP, VT);
+  return StackAddr;
+}
+
 /// ExpandBIT_CONVERT - If the target supports VFP, this function is called to
 /// expand a bit convert where either the source or destination type is i64 to
 /// use a VMOVDRR or VMOVRRD node.  This should not be done when the non-i64
@@ -3187,6 +3194,7 @@
   case ISD::FCOPYSIGN:     return LowerFCOPYSIGN(Op, DAG);
   case ISD::RETURNADDR:    return LowerRETURNADDR(Op, DAG);
   case ISD::FRAMEADDR:     return LowerFRAMEADDR(Op, DAG);
+  case ISD::STACKADDR:     return LowerSTACKADDR(Op, DAG);
   case ISD::GLOBAL_OFFSET_TABLE: return LowerGLOBAL_OFFSET_TABLE(Op, DAG);
   case ISD::EH_SJLJ_SETJMP: return LowerEH_SJLJ_SETJMP(Op, DAG);
   case ISD::EH_SJLJ_LONGJMP: return LowerEH_SJLJ_LONGJMP(Op, DAG);

Modified: llvm/trunk/lib/Target/ARM/ARMISelLowering.h
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/ARM/ARMISelLowering.h?rev=104862&r1=104861&r2=104862&view=diff
==============================================================================
--- llvm/trunk/lib/Target/ARM/ARMISelLowering.h (original)
+++ llvm/trunk/lib/Target/ARM/ARMISelLowering.h Thu May 27 13:23:48 2010
@@ -305,6 +305,7 @@
     SDValue LowerBR_CC(SDValue Op, SelectionDAG &DAG) const;
     SDValue LowerRETURNADDR(SDValue Op, SelectionDAG &DAG) const;
     SDValue LowerFRAMEADDR(SDValue Op, SelectionDAG &DAG) const;
+    SDValue LowerSTACKADDR(SDValue Op, SelectionDAG &DAG) const;
     SDValue LowerDYNAMIC_STACKALLOC(SDValue Op, SelectionDAG &DAG) const;
     SDValue LowerShiftRightParts(SDValue Op, SelectionDAG &DAG) const;
     SDValue LowerShiftLeftParts(SDValue Op, SelectionDAG &DAG) const;