[llvm-commits] [llvm] r130178 - in /llvm/trunk: include/llvm/CodeGen/AsmPrinter.h lib/CodeGen/AsmPrinter/AsmPrinter.cpp lib/Target/ARM/ARMAsmPrinter.cpp lib/Target/ARM/ARMAsmPrinter.h

[Devang Patel]

Author: dpatel
Date: Mon Apr 25 19:12:46 2011
New Revision: 130178

URL: http://llvm.org/viewvc/llvm-project?rev=130178&view=rev
Log:
Let dwarf writer allocate extra space in the debug location expression. This space, if requested, will be used for complex addresses of the Blocks' variables.

Modified:
    llvm/trunk/include/llvm/CodeGen/AsmPrinter.h
    llvm/trunk/lib/CodeGen/AsmPrinter/AsmPrinter.cpp
    llvm/trunk/lib/Target/ARM/ARMAsmPrinter.cpp
    llvm/trunk/lib/Target/ARM/ARMAsmPrinter.h

Modified: llvm/trunk/include/llvm/CodeGen/AsmPrinter.h
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/include/llvm/CodeGen/AsmPrinter.h?rev=130178&r1=130177&r2=130178&view=diff
==============================================================================
--- llvm/trunk/include/llvm/CodeGen/AsmPrinter.h (original)
+++ llvm/trunk/include/llvm/CodeGen/AsmPrinter.h Mon Apr 25 19:12:46 2011
@@ -384,7 +384,8 @@
     virtual unsigned getISAEncoding() { return 0; }
 
     /// EmitDwarfRegOp - Emit dwarf register operation.
-    virtual void EmitDwarfRegOp(const MachineLocation &MLoc) const;
+    virtual void EmitDwarfRegOp(const MachineLocation &MLoc,
+                                unsigned ExtraExprSize = 0) const;
 
     //===------------------------------------------------------------------===//
     // Dwarf Lowering Routines

Modified: llvm/trunk/lib/CodeGen/AsmPrinter/AsmPrinter.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/AsmPrinter/AsmPrinter.cpp?rev=130178&r1=130177&r2=130178&view=diff
==============================================================================
--- llvm/trunk/lib/CodeGen/AsmPrinter/AsmPrinter.cpp (original)
+++ llvm/trunk/lib/CodeGen/AsmPrinter/AsmPrinter.cpp Mon Apr 25 19:12:46 2011
@@ -753,7 +753,8 @@
 }
 
 /// EmitDwarfRegOp - Emit dwarf register operation.
-void AsmPrinter::EmitDwarfRegOp(const MachineLocation &MLoc) const {
+void AsmPrinter::EmitDwarfRegOp(const MachineLocation &MLoc,
+                                unsigned ExtraExprSize) const {
   const TargetRegisterInfo *RI = TM.getRegisterInfo();
   unsigned Reg = RI->getDwarfRegNum(MLoc.getReg(), false);
   if (int Offset =  MLoc.getOffset()) {
@@ -761,7 +762,7 @@
     // use DW_OP_fbreg.
     unsigned OffsetSize = Offset ? MCAsmInfo::getSLEB128Size(Offset) : 1;
     OutStreamer.AddComment("Loc expr size");
-    EmitInt16(1 + OffsetSize);
+    EmitInt16(1 + OffsetSize + ExtraExprSize);
     OutStreamer.AddComment(
       dwarf::OperationEncodingString(dwarf::DW_OP_fbreg));
     EmitInt8(dwarf::DW_OP_fbreg);
@@ -776,7 +777,7 @@
       EmitInt8(dwarf::DW_OP_reg0 + Reg);
     } else {
       OutStreamer.AddComment("Loc expr size");
-      EmitInt16(1 + MCAsmInfo::getULEB128Size(Reg));
+      EmitInt16(1 + MCAsmInfo::getULEB128Size(Reg) + ExtraExprSize);
       OutStreamer.AddComment(
         dwarf::OperationEncodingString(dwarf::DW_OP_regx));
       EmitInt8(dwarf::DW_OP_regx);

Modified: llvm/trunk/lib/Target/ARM/ARMAsmPrinter.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/ARM/ARMAsmPrinter.cpp?rev=130178&r1=130177&r2=130178&view=diff
==============================================================================
--- llvm/trunk/lib/Target/ARM/ARMAsmPrinter.cpp (original)
+++ llvm/trunk/lib/Target/ARM/ARMAsmPrinter.cpp Mon Apr 25 19:12:46 2011
@@ -173,10 +173,11 @@
 }
 
 /// EmitDwarfRegOp - Emit dwarf register operation.
-void ARMAsmPrinter::EmitDwarfRegOp(const MachineLocation &MLoc) const {
+void ARMAsmPrinter::EmitDwarfRegOp(const MachineLocation &MLoc,
+                                   unsigned ExtraExprSize) const {
   const TargetRegisterInfo *RI = TM.getRegisterInfo();
   if (RI->getDwarfRegNum(MLoc.getReg(), false) != -1)
-    AsmPrinter::EmitDwarfRegOp(MLoc);
+    AsmPrinter::EmitDwarfRegOp(MLoc, ExtraExprSize);
   else {
     unsigned Reg = MLoc.getReg();
     if (Reg >= ARM::S0 && Reg <= ARM::S31) {
@@ -191,7 +192,7 @@
       OutStreamer.AddComment("Loc expr size");
       // DW_OP_regx + ULEB + DW_OP_bit_piece + ULEB + ULEB
       //   1 + ULEB(Rx) + 1 + 1 + 1
-      EmitInt16(4 + MCAsmInfo::getULEB128Size(Rx));
+      EmitInt16(4 + MCAsmInfo::getULEB128Size(Rx) + ExtraExprSize);
 
       OutStreamer.AddComment("DW_OP_regx for S register");
       EmitInt8(dwarf::DW_OP_regx);
@@ -223,7 +224,8 @@
       // DW_OP_regx + ULEB + DW_OP_piece + ULEB(8) +
       // DW_OP_regx + ULEB + DW_OP_piece + ULEB(8);
       //   6 + ULEB(D1) + ULEB(D2)
-      EmitInt16(6 + MCAsmInfo::getULEB128Size(D1) + MCAsmInfo::getULEB128Size(D2));
+      EmitInt16(6 + MCAsmInfo::getULEB128Size(D1) 
+                + MCAsmInfo::getULEB128Size(D2) + ExtraExprSize);
 
       OutStreamer.AddComment("DW_OP_regx for Q register: D1");
       EmitInt8(dwarf::DW_OP_regx);

Modified: llvm/trunk/lib/Target/ARM/ARMAsmPrinter.h
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/ARM/ARMAsmPrinter.h?rev=130178&r1=130177&r2=130178&view=diff
==============================================================================
--- llvm/trunk/lib/Target/ARM/ARMAsmPrinter.h (original)
+++ llvm/trunk/lib/Target/ARM/ARMAsmPrinter.h Mon Apr 25 19:12:46 2011
@@ -90,7 +90,8 @@
   MachineLocation getDebugValueLocation(const MachineInstr *MI) const;
 
   /// EmitDwarfRegOp - Emit dwarf register operation.
-  virtual void EmitDwarfRegOp(const MachineLocation &MLoc) const;
+  virtual void EmitDwarfRegOp(const MachineLocation &MLoc,
+                              unsigned ExtraExprSize = 0) const;
 
   virtual unsigned getISAEncoding() {
     // ARM/Darwin adds ISA to the DWARF info for each function.