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If location info is attached with an instruction then keep track of alloca slots used by a variable. This info will be used by AsmPrinter to emit debug info for variables.

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llvm-svn: 83189
This commit is contained in:
Devang Patel 2009-10-01 01:03:26 +00:00
parent e097bf49d0
commit d24ba7a101
2 changed files with 23 additions and 3 deletions
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14
include/llvm/CodeGen/MachineModuleInfo.h
View File

@ -48,6 +48,7 @@ namespace llvm {
//===----------------------------------------------------------------------===//
// Forward declarations.
class Constant;
class MDNode;
class GlobalVariable;
class MachineBasicBlock;
class MachineFunction;
@ -142,9 +143,13 @@ class MachineModuleInfo : public ImmutablePass {
/// DbgInfoAvailable - True if debugging information is available
/// in this module.
bool DbgInfoAvailable;
public:
static char ID; // Pass identification, replacement for typeid
typedef DenseMap<MDNode *, std::pair<MDNode *, unsigned> > VariableDbgInfoMapTy;
VariableDbgInfoMapTy VariableDbgInfo;
MachineModuleInfo();
~MachineModuleInfo();
@ -325,6 +330,15 @@ public:
/// of one is required to emit exception handling info.
Function *getPersonality() const;
/// setVariableDbgInfo - Collect information used to emit debugging information
/// of a variable.
void setVariableDbgInfo(MDNode *N, MDNode *L, unsigned S) {
if (N && L)
VariableDbgInfo[N] = std::make_pair(L, S);
}
VariableDbgInfoMapTy &getVariableDbgInfo() { return VariableDbgInfo; }
}; // End class MachineModuleInfo
} // End llvm namespace

12
lib/CodeGen/SelectionDAG/FastISel.cpp
View File

@ -407,7 +407,6 @@ bool FastISel::SelectCall(User *I) {
|| !DW->ShouldEmitDwarfDebug())
return true;
Value *Variable = DI->getVariable();
Value *Address = DI->getAddress();
if (BitCastInst *BCI = dyn_cast<BitCastInst>(Address))
Address = BCI->getOperand(0);
@ -418,8 +417,15 @@ bool FastISel::SelectCall(User *I) {
StaticAllocaMap.find(AI);
if (SI == StaticAllocaMap.end()) break; // VLAs.
int FI = SI->second;
DW->RecordVariable(cast<MDNode>(Variable), FI);
if (MMI) {
MetadataContext &TheMetadata = AI->getContext().getMetadata();
unsigned MDDbgKind = TheMetadata.getMDKind("dbg");
MDNode *AllocaLocation =
dyn_cast_or_null<MDNode>(TheMetadata.getMD(MDDbgKind, AI));
if (AllocaLocation)
MMI->setVariableDbgInfo(DI->getVariable(), AllocaLocation, FI);
}
DW->RecordVariable(DI->getVariable(), FI);
return true;
}
case Intrinsic::eh_exception: {