[llvm-commits] [llvm-gcc-4.2] r46469 - /llvm-gcc-4.2/trunk/gcc/llvm-convert.cpp

[Evan Cheng]

Author: evancheng
Date: Mon Jan 28 16:28:50 2008
New Revision: 46469

URL: http://llvm.org/viewvc/llvm-project?rev=46469&view=rev
Log:
Debug info for byval parameter. First attempt, unclear if it is right. But at least it tells gdb there is a parameter.

Modified:
    llvm-gcc-4.2/trunk/gcc/llvm-convert.cpp

Modified: llvm-gcc-4.2/trunk/gcc/llvm-convert.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm-gcc-4.2/trunk/gcc/llvm-convert.cpp?rev=46469&r1=46468&r2=46469&view=diff

==============================================================================
--- llvm-gcc-4.2/trunk/gcc/llvm-convert.cpp (original)
+++ llvm-gcc-4.2/trunk/gcc/llvm-convert.cpp Mon Jan 28 16:28:50 2008
@@ -672,13 +672,22 @@
     if (DECL_NAME(Args)) Name = IDENTIFIER_POINTER(DECL_NAME(Args));
 
     const Type *ArgTy = ConvertType(TREE_TYPE(Args));
-    if (isPassedByInvisibleReference(TREE_TYPE(Args)) ||
+    bool isInvRef = isPassedByInvisibleReference(TREE_TYPE(Args));
+    if (isInvRef ||
         (!ArgTy->isFirstClassType() &&
          LLVM_SHOULD_PASS_AGGREGATE_USING_BYVAL_ATTR(TREE_TYPE(Args), ArgTy))) {
       // If the value is passed by 'invisible reference' or 'byval reference',
       // the l-value for the argument IS the argument itself.
-      SET_DECL_LLVM(Args, AI);
       AI->setName(Name);
+      SET_DECL_LLVM(Args, AI);
+      if (!isInvRef && TheDebugInfo) {
+        Value *Tmp = CreateTemporary(PointerType::getUnqual(ArgTy));
+        Tmp->setName(std::string(Name)+"_addr");
+        TheDebugInfo->EmitDeclare(Args, llvm::dwarf::DW_TAG_arg_variable,
+                                  Name, TREE_TYPE(Args), Tmp, 
+                                  Builder.GetInsertBlock());
+        Builder.CreateStore(AI, Tmp);
+      }
       ++AI;
     } else {
       // Otherwise, we create an alloca to hold the argument value and provide