6502/llvm-6502
1
0
Fork 0
mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2025-06-24 08:24:33 +00:00
Code Issues Projects Releases Wiki Activity

Appropriately truncate debug info range in dwarf output.

Browse Source 
Enable live debug variables pass.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123032 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Devang Patel
2011-01-07 21:30:41 +00:00
parent 30a343aeed
commit 1dea232624
5 changed files with 63 additions and 24 deletions
Download Patch File Download Diff File Expand all files Collapse all files

20
lib/CodeGen/AsmPrinter/DwarfDebug.cpp
View File

@ -2257,15 +2257,6 @@ DwarfDebug::collectVariableInfoFromMMITable(const MachineFunction * MF,
}
}
/// isDbgValueInUndefinedReg - Return true if debug value, encoded by
/// DBG_VALUE instruction, is in undefined reg.
static bool isDbgValueInUndefinedReg(const MachineInstr *MI) {
assert (MI->isDebugValue() && "Invalid DBG_VALUE machine instruction!");
if (MI->getOperand(0).isReg() && !MI->getOperand(0).getReg())
return true;
return false;
}
/// isDbgValueInDefinedReg - Return true if debug value, encoded by
/// DBG_VALUE instruction, is in a defined reg.
static bool isDbgValueInDefinedReg(const MachineInstr *MI) {
@ -2290,7 +2281,7 @@ DwarfDebug::collectVariableInfo(const MachineFunction *MF,
for (MachineBasicBlock::const_iterator II = I->begin(), IE = I->end();
II != IE; ++II) {
const MachineInstr *MInsn = II;
if (!MInsn->isDebugValue() || isDbgValueInUndefinedReg(MInsn))
if (!MInsn->isDebugValue())
continue;
DbgValues.push_back(MInsn);
}
@ -2312,19 +2303,18 @@ DwarfDebug::collectVariableInfo(const MachineFunction *MF,
ME = DbgValues.end(); MI != ME; ++MI) {
const MDNode *Var =
(*MI)->getOperand((*MI)->getNumOperands()-1).getMetadata();
if (Var == DV && isDbgValueInDefinedReg(*MI) &&
if (Var == DV &&
!PrevMI->isIdenticalTo(*MI))
MultipleValues.push_back(*MI);
PrevMI = *MI;
}
DbgScope *Scope = findDbgScope(MInsn);
bool CurFnArg = false;
DbgScope *Scope = NULL;
if (DV.getTag() == dwarf::DW_TAG_arg_variable &&
DISubprogram(DV.getContext()).describes(MF->getFunction()))
CurFnArg = true;
if (!Scope && CurFnArg)
Scope = CurrentFnDbgScope;
else
Scope = findDbgScope(MInsn);
// If variable scope is not found then skip this variable.
if (!Scope)
continue;

6
lib/CodeGen/LiveDebugVariables.cpp
View File

@ -39,10 +39,6 @@
using namespace llvm;
static cl::opt<bool>
EnableLDV("live-debug-variables",
cl::desc("Enable the live debug variables pass"), cl::Hidden);
char LiveDebugVariables::ID = 0;
INITIALIZE_PASS_BEGIN(LiveDebugVariables, "livedebugvars",
@ -622,8 +618,6 @@ bool LDVImpl::runOnMachineFunction(MachineFunction &mf) {
}
bool LiveDebugVariables::runOnMachineFunction(MachineFunction &mf) {
if (!EnableLDV)
return false;
if (!pImpl)
pImpl = new LDVImpl(this);
return static_cast<LDVImpl*>(pImpl)->runOnMachineFunction(mf);