commit dcb6da3efdfeb007ce222192f3af00736133682d
author Sanjiv Gupta <sanjiv.gupta@microchip.com> Sat Jun 13 17:35:54 2009 +0000
committer Sanjiv Gupta <sanjiv.gupta@microchip.com> Sat Jun 13 17:35:54 2009 +0000
tree 885967f923d2572dfcc8498df75f6f389c1ea03e
parent 4d8414f42033a5e744e8e60d2ca188b424c76168

The subprogram descriptor for a function may be missing (llvm-ld linking two static functions with same name), so pick up the compilation unit for the function from the first valid debug loc of its instructions.
This patch also emits debug info for structure (aggregate types in 
general) types.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73295 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Target/PIC16/PIC16AsmPrinter.cpp

diff --git a/lib/Target/PIC16/PIC16AsmPrinter.cpp b/lib/Target/PIC16/PIC16AsmPrinter.cpp
index d628227..f9a8801 100644
--- a/lib/Target/PIC16/PIC16AsmPrinter.cpp
+++ b/lib/Target/PIC16/PIC16AsmPrinter.cpp
@@ -48,8 +48,21 @@
   const Function *F = MF.getFunction();
   CurrentFnName = Mang->getValueName(F);
 
-  // Emit .file directive.
-  DbgInfo.EmitFileDirective(F);
+  // Iterate over the first basic block instructions to find if it has a
+  // DebugLoc. If so emit .file directive. Instructions such as movlw do not
+  // have valid DebugLoc, so need to iterate over instructions.
+  MachineFunction::const_iterator I = MF.begin();
+  for (MachineBasicBlock::const_iterator MBBI = I->begin(), E = I->end();
+       MBBI != E; MBBI++) {
+    const DebugLoc DLoc = MBBI->getDebugLoc();
+    if (!DLoc.isUnknown()) {
+      GlobalVariable *CU = MF.getDebugLocTuple(DLoc).CompileUnit;
+      unsigned line = MF.getDebugLocTuple(DLoc).Line;
+      DbgInfo.EmitFileDirective(CU);
+      DbgInfo.SetFunctBeginLine(line);
+      break;
+    }
+  }
 
   // Emit the function frame (args and temps).
   EmitFunctionFrame(MF);
@@ -213,14 +226,13 @@
     I->setSection(TAI->SectionForGlobal(I)->getName());
   }
 
-  DbgInfo.EmitFileDirective(M);
+  DbgInfo.Init(M);
   EmitFunctionDecls(M);
   EmitUndefinedVars(M);
   EmitDefinedVars(M);
   EmitIData(M);
   EmitUData(M);
   EmitRomData(M);
-  DbgInfo.PopulateFunctsDI(M);
   return Result;
 }
 
@@ -230,7 +242,7 @@
 ///
 void PIC16AsmPrinter::EmitFunctionDecls (Module &M) {
  // Emit declarations for external functions.
-  O << TAI->getCommentString() << "Function Declarations - BEGIN." <<"\n";
+  O <<"\n"<<TAI->getCommentString() << "Function Declarations - BEGIN." <<"\n";
   for (Module::iterator I = M.begin(), E = M.end(); I != E; I++) {
     std::string Name = Mang->getValueName(I);
     if (Name.compare("@abort") == 0)