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Remove debug info attached with an instruction.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89016 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Devang Patel 2009-11-17 00:47:06 +00:00
parent dc1472b6d9
commit 76e3e50b8a
1 changed files with 18 additions and 36 deletions
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54
lib/Transforms/IPO/StripSymbols.cpp
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@ -202,53 +202,35 @@ static bool StripSymbolNames(Module &M, bool PreserveDbgInfo) {
// llvm.dbg.region.end calls, and any globals they point to if now dead.
static bool StripDebugInfo(Module &M) {
bool Changed = false;
// Remove all of the calls to the debugger intrinsics, and remove them from
// the module.
Function *FuncStart = M.getFunction("llvm.dbg.func.start");
Function *StopPoint = M.getFunction("llvm.dbg.stoppoint");
Function *RegionStart = M.getFunction("llvm.dbg.region.start");
Function *RegionEnd = M.getFunction("llvm.dbg.region.end");
Function *Declare = M.getFunction("llvm.dbg.declare");
if (FuncStart) {
while (!FuncStart->use_empty()) {
CallInst *CI = cast<CallInst>(FuncStart->use_back());
CI->eraseFromParent();
}
FuncStart->eraseFromParent();
}
if (StopPoint) {
while (!StopPoint->use_empty()) {
CallInst *CI = cast<CallInst>(StopPoint->use_back());
CI->eraseFromParent();
}
StopPoint->eraseFromParent();
}
if (RegionStart) {
while (!RegionStart->use_empty()) {
CallInst *CI = cast<CallInst>(RegionStart->use_back());
CI->eraseFromParent();
}
RegionStart->eraseFromParent();
}
if (RegionEnd) {
while (!RegionEnd->use_empty()) {
CallInst *CI = cast<CallInst>(RegionEnd->use_back());
CI->eraseFromParent();
}
RegionEnd->eraseFromParent();
}
if (Declare) {
if (Function *Declare = M.getFunction("llvm.dbg.declare")) {
while (!Declare->use_empty()) {
CallInst *CI = cast<CallInst>(Declare->use_back());
CI->eraseFromParent();
}
Declare->eraseFromParent();
Changed = true;
}
NamedMDNode *NMD = M.getNamedMetadata("llvm.dbg.gv");
if (NMD)
if (NMD) {
Changed = true;
NMD->eraseFromParent();
}
MetadataContext &TheMetadata = M.getContext().getMetadata();
unsigned MDDbgKind = TheMetadata.getMDKind("dbg");
if (!MDDbgKind)
return Changed;
for (Module::iterator MI = M.begin(), ME = M.end(); MI != ME; ++MI)
for (Function::iterator FI = MI->begin(), FE = MI->end(); FI != FE;
++FI)
for (BasicBlock::iterator BI = FI->begin(), BE = FI->end(); BI != BE;
++BI)
TheMetadata.removeMD(MDDbgKind, BI);
return true;
}