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Remove all dbg symobls, including those with circular references.

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This is ugly, but I can't figure out a quick way out of this.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@65889 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Devang Patel 2009-03-02 22:50:58 +00:00
parent 893a0f9f0e
commit 73df3c9721
1 changed files with 15 additions and 3 deletions
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18
lib/Transforms/IPO/StripSymbols.cpp
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@ -185,6 +185,21 @@ bool StripSymbolNames(Module &M, bool PreserveDbgInfo) {
// llvm.dbg.region.end calls, and any globals they point to if now dead. // llvm.dbg.region.end calls, and any globals they point to if now dead.
bool StripDebugInfo(Module &M) { bool StripDebugInfo(Module &M) {
SmallPtrSet<const GlobalValue*, 8> llvmUsedValues;
findUsedValues(M, llvmUsedValues);
// Delete all dbg variables.
for (Module::global_iterator I = M.global_begin(), E = M.global_end();
I != E; ++I) {
GlobalVariable *GV = dyn_cast<GlobalVariable>(I);
if (!GV) continue;
if (!GV->use_empty() && llvmUsedValues.count(I) == 0) {
if (strncmp(GV->getNameStart(), "llvm.dbg", 8) == 0) {
GV->replaceAllUsesWith(UndefValue::get(GV->getType()));
}
}
}
Function *FuncStart = M.getFunction("llvm.dbg.func.start"); Function *FuncStart = M.getFunction("llvm.dbg.func.start");
Function *StopPoint = M.getFunction("llvm.dbg.stoppoint"); Function *StopPoint = M.getFunction("llvm.dbg.stoppoint");
Function *RegionStart = M.getFunction("llvm.dbg.region.start"); Function *RegionStart = M.getFunction("llvm.dbg.region.start");
@ -263,9 +278,6 @@ bool StripDebugInfo(Module &M) {
Declare->eraseFromParent(); Declare->eraseFromParent();
} }
SmallPtrSet<const GlobalValue*, 8> llvmUsedValues;
findUsedValues(M, llvmUsedValues);
// llvm.dbg.compile_units and llvm.dbg.subprograms are marked as linkonce // llvm.dbg.compile_units and llvm.dbg.subprograms are marked as linkonce
// but since we are removing all debug information, make them internal now. // but since we are removing all debug information, make them internal now.
// FIXME: Use private linkage maybe? // FIXME: Use private linkage maybe?