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changeset 245:d61ce72c39ab trunk

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[svn r262] Fixed debug info for normal function parameters. Fixed debug info for pointers to basic types.
author lindquist
date Mon, 09 Jun 2008 12:43:16 +0200
parents a95056b3c996
children b604c56945b0
files dmd/declaration.c dmd/func.c gen/functions.cpp gen/todebug.cpp gen/todebug.h gen/toir.cpp llvmdc.kdevelop.filelist tangotests/debug1.d tangotests/debug2.d tangotests/debug3.d tangotests/debug4.d tangotests/debug5.d
diffstat 12 files changed, 217 insertions(+), 28 deletions(-) [+]
line wrap: on
line diff
--- a/dmd/declaration.c	Mon Jun 09 09:37:08 2008 +0200
+++ b/dmd/declaration.c	Mon Jun 09 12:43:16 2008 +0200
@@ -573,6 +573,8 @@
 
 	sv = new VarDeclaration(loc, type ? type->syntaxCopy() : NULL, ident, init);
 	sv->storage_class = storage_class;
+    // LLVMDC
+    sv->needsStorage = needsStorage;
     }
 #ifdef _DH
     // Syntax copy for header file
--- a/dmd/func.c	Mon Jun 09 09:37:08 2008 +0200
+++ b/dmd/func.c	Mon Jun 09 12:43:16 2008 +0200
@@ -781,6 +781,11 @@
 		if (v->storage_class & STClazy)
 		    v->storage_class |= STCin;
 		v->semantic(sc2);
+    #if IN_LLVM
+        // LLVMDC: the argument needs an addres if we want to attach debug info to it.
+        if (global.params.symdebug)
+            v->needsStorage = true;
+    #endif
 		if (!sc2->insert(v))
 		    error("parameter %s.%s is already defined", toChars(), v->toChars());
 		else
--- a/gen/functions.cpp	Mon Jun 09 09:37:08 2008 +0200
+++ b/gen/functions.cpp	Mon Jun 09 12:43:16 2008 +0200
@@ -607,6 +607,10 @@
             s.append("_storage");
 
             LLValue* v = new llvm::AllocaInst(a->getType(),s,allocaPoint);
+
+            if (global.params.symdebug)
+                DtoDwarfLocalVariable(v, vd);
+
             gIR->ir->CreateStore(a,v);
             vd->ir.irLocal->value = v;
         }
--- a/gen/todebug.cpp	Mon Jun 09 09:37:08 2008 +0200
+++ b/gen/todebug.cpp	Mon Jun 09 12:43:16 2008 +0200
@@ -100,17 +100,29 @@
 
 //////////////////////////////////////////////////////////////////////////////////////////////////
 
-const llvm::StructType* GetDwarfCompileUnitType() {
+static const llvm::StructType* GetDwarfCompileUnitType() {
     return isaStruct(gIR->module->getTypeByName("llvm.dbg.compile_unit.type"));
 }
 
-const llvm::StructType* GetDwarfSubProgramType() {
+static const llvm::StructType* GetDwarfSubProgramType() {
     return isaStruct(gIR->module->getTypeByName("llvm.dbg.subprogram.type"));
 }
 
+static const llvm::StructType* GetDwarfVariableType() {
+    return isaStruct(gIR->module->getTypeByName("llvm.dbg.variable.type"));
+}
+
+static const llvm::StructType* GetDwarfDerivedTypeType() {
+    return isaStruct(gIR->module->getTypeByName("llvm.dbg.derivedtype.type"));
+}
+
+static const llvm::StructType* GetDwarfBasicTypeType() {
+    return isaStruct(gIR->module->getTypeByName("llvm.dbg.basictype.type"));
+}
+
 //////////////////////////////////////////////////////////////////////////////////////////////////
 
-llvm::GlobalVariable* DtoDwarfCompileUnit(Module* m)
+LLGlobalVariable* DtoDwarfCompileUnit(Module* m)
 {
     if (!m->ir.irModule)
         m->ir.irModule = new IrModule(m);
@@ -204,14 +216,15 @@
 
 //////////////////////////////////////////////////////////////////////////////////////////////////
 
-const llvm::StructType* GetDwarfBasicTypeType() {
-    return isaStruct(gIR->module->getTypeByName("llvm.dbg.basictype.type"));
-}
+static LLGlobalVariable* DtoDwarfTypeDescription(Loc loc, Type* type, LLGlobalVariable* cu);
 
 //////////////////////////////////////////////////////////////////////////////////////////////////
 
-LLGlobalVariable* DtoDwarfBasicType(Type* type, llvm::GlobalVariable* compileUnit)
+static LLGlobalVariable* DtoDwarfBasicType(Type* type, llvm::GlobalVariable* compileUnit)
 {
+    Type* t = type->toBasetype();
+    
+
     const LLType* T = DtoType(type);
 
     std::vector<LLConstant*> vals;
@@ -237,14 +250,14 @@
     vals.push_back(DtoConstUint(0));
     // dwarf type
     unsigned id;
-    if (type->isintegral())
+    if (t->isintegral())
     {
         if (type->isunsigned())
             id = llvm::dwarf::DW_ATE_unsigned;
         else
             id = llvm::dwarf::DW_ATE_signed;
     }
-    else if (type->isfloating())
+    else if (t->isfloating())
     {
         id = llvm::dwarf::DW_ATE_float;
     }
@@ -262,13 +275,63 @@
 
 //////////////////////////////////////////////////////////////////////////////////////////////////
 
-const llvm::StructType* GetDwarfVariableType() {
-    return isaStruct(gIR->module->getTypeByName("llvm.dbg.variable.type"));
+static LLGlobalVariable* DtoDwarfDerivedType(Loc loc, Type* type, llvm::GlobalVariable* compileUnit)
+{
+    const LLType* T = DtoType(type);
+    Type* t = DtoDType(type);
+
+    // defaults
+    LLConstant* name = getNullPtr(getVoidPtrType());
+
+    // find tag
+    unsigned tag;
+    if (t->ty == Tpointer)
+    {
+        tag = llvm::dwarf::DW_TAG_pointer_type;
+    }
+    else
+    {
+        assert(0 && "unsupported derivedtype for debug info");
+    }
+
+    std::vector<LLConstant*> vals;
+    // tag
+    vals.push_back(llvm::ConstantExpr::getAdd(
+        DtoConstUint(tag),
+        DtoConstUint(llvm::LLVMDebugVersion)));
+    // context
+    vals.push_back(dbgToArrTy(compileUnit));
+    // name
+    vals.push_back(name);
+    // compile unit where defined
+    vals.push_back(getNullPtr(dbgArrTy()));
+    // line number where defined
+    vals.push_back(DtoConstInt(0));
+    // size in bits
+    vals.push_back(LLConstantInt::get(LLType::Int64Ty, getTypeBitSize(T), false));
+    // alignment in bits
+    vals.push_back(LLConstantInt::get(LLType::Int64Ty, getABITypeAlign(T)*8, false));
+    // offset in bits
+    vals.push_back(LLConstantInt::get(LLType::Int64Ty, 0, false));
+    // FIXME: dont know what this is
+    vals.push_back(DtoConstUint(0));
+    // base type
+    Type* nt = t->nextOf();
+    LLGlobalVariable* nTD = DtoDwarfTypeDescription(loc, nt, compileUnit);
+    if (nt->ty == Tvoid || !nTD)
+        vals.push_back(getNullPtr(dbgArrTy()));
+    else
+        vals.push_back(dbgToArrTy(nTD));
+
+    LLConstant* c = llvm::ConstantStruct::get(GetDwarfDerivedTypeType(), vals);
+    LLGlobalVariable* gv = new LLGlobalVariable(c->getType(), true, LLGlobalValue::InternalLinkage, c, "llvm.dbg.derivedtype", gIR->module);
+    gv->setSection("llvm.metadata");
+    return gv;
 }
 
 //////////////////////////////////////////////////////////////////////////////////////////////////
 
-LLGlobalVariable* DtoDwarfVariable(VarDeclaration* vd, LLGlobalVariable* typeDescr)
+static LLGlobalVariable* DtoDwarfVariable(VarDeclaration* vd, LLGlobalVariable* typeDescr)
 {
     unsigned tag;
     if (vd->isParameter())
@@ -302,10 +365,60 @@
 
 //////////////////////////////////////////////////////////////////////////////////////////////////
 
-void DtoDwarfDeclare(LLValue* var, LLGlobalVariable* varDescr)
+static void DtoDwarfDeclare(LLValue* var, LLGlobalVariable* varDescr)
 {
     LLSmallVector<LLValue*,2> args;
     args.push_back(DtoBitCast(var, dbgArrTy()));
     args.push_back(dbgToArrTy(varDescr));
     gIR->ir->CreateCall(gIR->module->getFunction("llvm.dbg.declare"), args.begin(), args.end());
 }
+
+//////////////////////////////////////////////////////////////////////////////////////////////////
+
+static LLGlobalVariable* DtoDwarfTypeDescription(Loc loc, Type* type, LLGlobalVariable* cu)
+{
+    Type* t = type->toBasetype();
+    if (t->isintegral() || t->isfloating())
+        return DtoDwarfBasicType(type, cu);
+    else if (t->ty == Tpointer)
+        return DtoDwarfDerivedType(loc, type, cu);
+
+    Logger::attention(loc, "unsupport type for debug info: %s", type->toChars());
+    return NULL;
+}
+
+void DtoDwarfLocalVariable(LLValue* ll, VarDeclaration* vd)
+{
+    // get compile units
+    LLGlobalVariable* thisCU = DtoDwarfCompileUnit(gIR->dmodule);
+    LLGlobalVariable* varCU = thisCU;
+    if (vd->getModule() != gIR->dmodule)
+        varCU = DtoDwarfCompileUnit(vd->getModule());
+
+    // get type description
+    Type* t = vd->type->toBasetype();
+    LLGlobalVariable* TD = DtoDwarfTypeDescription(vd->loc, vd->type, thisCU);
+    if (TD == NULL)
+        return; // unsupported
+
+    // get variable description
+    LLGlobalVariable* VD;
+    VD = DtoDwarfVariable(vd, TD);
+
+    // declare
+    DtoDwarfDeclare(ll, VD);
+}
+
+
+
+
+
+
+
+
+
+
+
+
+
+
--- a/gen/todebug.h	Mon Jun 09 09:37:08 2008 +0200
+++ b/gen/todebug.h	Mon Jun 09 12:43:16 2008 +0200
@@ -3,10 +3,6 @@
 
 void RegisterDwarfSymbols(llvm::Module* mod);
 
-const llvm::StructType* GetDwarfAnchorType();
-const llvm::StructType* GetDwarfCompileUnitType();
-const llvm::StructType* GetDwarfSubProgramType();
-
 llvm::GlobalVariable* DtoDwarfCompileUnit(Module* m);
 llvm::GlobalVariable* DtoDwarfSubProgram(FuncDeclaration* fd, llvm::GlobalVariable* compileUnit);
 
@@ -15,12 +11,12 @@
 
 void DtoDwarfStopPoint(unsigned ln);
 
-const llvm::StructType* GetDwarfBasicTypeType();
-LLGlobalVariable* DtoDwarfBasicType(Type* type, llvm::GlobalVariable* compileUnit);
-
-const llvm::StructType* GetDwarfVariableType();
-LLGlobalVariable* DtoDwarfVariable(VarDeclaration* vd, LLGlobalVariable* typeDescr);
-void DtoDwarfDeclare(LLValue* var, LLGlobalVariable* varDescr);
+/**
+ * Emits all things necessary for making debug info for a local variable vd.
+ * @param ll LLVM Value of the variable.
+ * @param vd Variable declaration to emit debug info for.
+ */
+void DtoDwarfLocalVariable(LLValue* ll, VarDeclaration* vd);
 
 #endif // LLVMDC_GEN_TODEBUG_H
 
--- a/gen/toir.cpp	Mon Jun 09 09:37:08 2008 +0200
+++ b/gen/toir.cpp	Mon Jun 09 12:43:16 2008 +0200
@@ -78,12 +78,9 @@
                 vd->ir.irLocal = new IrLocal(vd);
                 vd->ir.irLocal->value = allocainst;
 
-                if (global.params.symdebug && (vd->type->isintegral() || vd->type->isfloating()))
+                if (global.params.symdebug)
                 {
-                    LLGlobalVariable* cu = DtoDwarfCompileUnit(vd->getModule());
-                    LLGlobalVariable* bt = DtoDwarfBasicType(vd->type, cu);
-                    LLGlobalVariable* vdesc = DtoDwarfVariable(vd, bt);
-                    DtoDwarfDeclare(allocainst, vdesc);
+                    DtoDwarfLocalVariable(allocainst, vd);
                 }
             }
 
--- a/llvmdc.kdevelop.filelist	Mon Jun 09 09:37:08 2008 +0200
+++ b/llvmdc.kdevelop.filelist	Mon Jun 09 12:43:16 2008 +0200
@@ -765,6 +765,10 @@
 tangotests/classes1.d
 tangotests/constructors.d
 tangotests/debug1.d
+tangotests/debug2.d
+tangotests/debug3.d
+tangotests/debug4.d
+tangotests/debug5.d
 tangotests/e.d
 tangotests/f.d
 tangotests/files1.d
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/tangotests/debug1.d	Mon Jun 09 12:43:16 2008 +0200
@@ -0,0 +1,17 @@
+module tangotests.debug1;
+
+void main()
+{
+    int* ptr;
+
+    // all these should be inspectable
+    int i = 1;
+    int j = 2;
+    long k = 3;
+    float l = 4.521;
+    ubyte m = 5;
+
+    *ptr = 0;//cast(int)(i+j+k+l+m);
+}
+
+extern(C) int printf(char*, ...);
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/tangotests/debug2.d	Mon Jun 09 12:43:16 2008 +0200
@@ -0,0 +1,15 @@
+module tangotests.debug2;
+
+import tango.stdc.stdlib : rand;
+
+void main()
+{
+    size_t iter;
+    while (iter < 25)
+    {
+        if (rand() % 20 == 10)
+            *cast(int*)null = 0;
+        ++iter;
+    }
+    assert(0);
+}
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/tangotests/debug3.d	Mon Jun 09 12:43:16 2008 +0200
@@ -0,0 +1,10 @@
+module tangotests.debug3;
+
+void main()
+{
+    int i = 42;
+    int* ip = &i;
+
+    int* fail;
+    *fail = 0;
+}
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/tangotests/debug4.d	Mon Jun 09 12:43:16 2008 +0200
@@ -0,0 +1,11 @@
+module tangotests.debug4;
+
+void main()
+{
+    char c = 'c';
+    wchar wc = 'w';
+    dchar dc = 'd';
+
+    int* fail;
+    *fail = 32;
+}
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/tangotests/debug5.d	Mon Jun 09 12:43:16 2008 +0200
@@ -0,0 +1,15 @@
+module tangotests.debug5;
+
+void main()
+{
+    int i = 32;
+    real r = 3.1415;
+    real* p = &r;
+    func(i,r,p);
+}
+
+void func(int i, real r, real* p)
+{
+    int* fail;
+    *fail = 666;
+}