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Set up MachineDebugInfo to scan for debug information form "llvm.db"g globals.

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Global Variable information is now pulled from "llvm.dbg.globals"


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25655 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Jim Laskey
2006-01-26 20:21:46 +00:00
parent e4a359e43b
commit b3e789ac25
6 changed files with 417 additions and 437 deletions
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29
lib/CodeGen/DwarfWriter.cpp
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@@ -18,6 +18,7 @@
#include "llvm/Type.h"
#include "llvm/CodeGen/AsmPrinter.h"
#include "llvm/CodeGen/MachineDebugInfo.h"
#include "llvm/Support/Dwarf.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/Mangler.h"
#include "llvm/Target/TargetMachine.h"
@@ -1719,28 +1720,26 @@ void DwarfWriter::ConstructCompileUnitDIEs() {
/// variables.
void DwarfWriter::ConstructGlobalDIEs(Module &M) {
const TargetData &TD = Asm->TM.getTargetData();
// Iterate throu each of the globals.
for (Module::const_global_iterator GI = M.global_begin(), GE = M.global_end();
GI != GE; ++GI) {
if (!GI->hasInitializer()) continue; // External global require no code
std::vector<GlobalWrapper> GlobalVariables = DebugInfo->getGlobalVariables(M);
for (unsigned i = 0, N = GlobalVariables.size(); i < N; ++i) {
GlobalWrapper &GW = GlobalVariables[i];
GlobalVariable *GV = GW.getGlobalVariable();
// Check to see if this is a special global used by LLVM, if so, emit it.
if (GI->hasAppendingLinkage() && (GI->getName() == "llvm.global_ctors" ||
GI->getName() == "llvm.global_dtors"))
continue;
if (!GV->hasInitializer()) continue; // External global require no code
std::string Name = Asm->Mang->getValueName(GI);
Constant *C = GI->getInitializer();
// FIXME - Use global info type information when available.
std::string Name = Asm->Mang->getValueName(GV);
Constant *C = GV->getInitializer();
const Type *Ty = C->getType();
unsigned Size = TD.getTypeSize(Ty);
unsigned Align = TD.getTypeAlignmentShift(Ty);
if (C->isNullValue() && /* FIXME: Verify correct */
(GI->hasInternalLinkage() || GI->hasWeakLinkage() ||
GI->hasLinkOnceLinkage())) {
(GV->hasInternalLinkage() || GV->hasWeakLinkage() ||
GV->hasLinkOnceLinkage())) {
if (Size == 0) Size = 1; // .comm Foo, 0 is undefined, avoid it.
}
/// FIXME - Get correct compile unit context.
@@ -1748,7 +1747,7 @@ void DwarfWriter::ConstructGlobalDIEs(Module &M) {
DWContext *Context = CompileUnits[0]->getContext();
/// Create new global.
NewGlobalVariable(Context, GI->getName(), Name, Ty, Size, Align);
NewGlobalVariable(Context, GV->getName(), Name, Ty, Size, Align);
}
}