[llvm-commits] [llvm] r114585 - /llvm/trunk/lib/CodeGen/AsmPrinter/DwarfDebug.cpp

[Devang Patel]

Author: dpatel
Date: Wed Sep 22 16:10:38 2010
New Revision: 114585

URL: http://llvm.org/viewvc/llvm-project?rev=114585&view=rev
Log:
Use DW_OP_fbreg when offset is based on frame register.


Modified:
    llvm/trunk/lib/CodeGen/AsmPrinter/DwarfDebug.cpp

Modified: llvm/trunk/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/AsmPrinter/DwarfDebug.cpp?rev=114585&r1=114584&r2=114585&view=diff
==============================================================================
--- llvm/trunk/lib/CodeGen/AsmPrinter/DwarfDebug.cpp (original)
+++ llvm/trunk/lib/CodeGen/AsmPrinter/DwarfDebug.cpp Wed Sep 22 16:10:38 2010
@@ -811,6 +811,16 @@
   const TargetRegisterInfo *RI = Asm->TM.getRegisterInfo();
   unsigned Reg = RI->getDwarfRegNum(Location.getReg(), false);
   DIEBlock *Block = new (DIEValueAllocator) DIEBlock();
+  const TargetRegisterInfo *TRI = Asm->TM.getRegisterInfo();
+
+  if (TRI->getFrameRegister(*Asm->MF) == Location.getReg()
+      && Location.getOffset()) {
+    // If variable offset is based in frame register then use fbreg.
+    addUInt(Block, 0, dwarf::DW_FORM_data1, dwarf::DW_OP_fbreg);
+    addSInt(Block, 0, dwarf::DW_FORM_sdata, Location.getOffset());
+    addBlock(Die, Attribute, 0, Block);
+    return;
+  }
 
   if (Location.isReg()) {
     if (Reg < 32) {