typedef ilist<MachineBasicBlock> BasicBlockListType;
BasicBlockListType BasicBlocks;
- /// Default debug location. Used to print out the debug label at the beginning
- /// of a function.
- DebugLoc DefaultDebugLoc;
-
/// FunctionNumber - This provides a unique ID for each function emitted in
/// this translation unit.
///
/// normal 'L' label is returned.
MCSymbol *getJTISymbol(unsigned JTI, MCContext &Ctx,
bool isLinkerPrivate = false) const;
-
-
- //===--------------------------------------------------------------------===//
- // Debug location.
- //
-
- /// getDefaultDebugLoc - Get the default debug location for the machine
- /// function.
- DebugLoc getDefaultDebugLoc() const { return DefaultDebugLoc; }
-
- /// setDefaultDebugLoc - Get the default debug location for the machine
- /// function.
- void setDefaultDebugLoc(DebugLoc DL) { DefaultDebugLoc = DL; }
};
//===--------------------------------------------------------------------===//
}
}
+/// FindFirstDebugLoc - Find the first debug location in the function. This
+/// is intended to be an approximation for the source position of the
+/// beginning of the function.
+static DebugLoc FindFirstDebugLoc(const MachineFunction *MF) {
+ for (MachineFunction::const_iterator I = MF->begin(), E = MF->end();
+ I != E; ++I)
+ for (MachineBasicBlock::const_iterator MBBI = I->begin(), MBBE = I->end();
+ MBBI != MBBE; ++MBBI) {
+ DebugLoc DL = MBBI->getDebugLoc();
+ if (!DL.isUnknown())
+ return DL;
+ }
+ return DebugLoc();
+}
+
/// beginFunction - Gather pre-function debug information. Assumes being
/// emitted immediately after the function entry point.
void DwarfDebug::beginFunction(const MachineFunction *MF) {
// Emit label for the implicitly defined dbg.stoppoint at the start of the
// function.
- DebugLoc FDL = MF->getDefaultDebugLoc();
+ DebugLoc FDL = FindFirstDebugLoc(MF);
if (FDL.isUnknown()) return;
MDNode *Scope = FDL.getScope(MF->getFunction()->getContext());
if (FastIS)
FastIS->setCurDebugLoc(DL);
-
- // If the function doesn't have a default debug location yet, set
- // it. This is a total hack.
- if (MF->getDefaultDebugLoc().isUnknown())
- MF->setDefaultDebugLoc(DL);
}
/// ResetDebugLoc - Set MF's and SDB's DebugLocs to Unknown.